1139 lines
		
	
	
		
			34 KiB
		
	
	
	
		
			Bash
		
	
	
	
	
	
			
		
		
	
	
			1139 lines
		
	
	
		
			34 KiB
		
	
	
	
		
			Bash
		
	
	
	
	
	
| # Copyright 2002-2021 Gentoo Authors
 | |
| # Distributed under the terms of the GNU General Public License v2
 | |
| 
 | |
| # @ECLASS: toolchain-funcs.eclass
 | |
| # @MAINTAINER:
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| # Toolchain Ninjas <toolchain@gentoo.org>
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| # @BLURB: functions to query common info about the toolchain
 | |
| # @DESCRIPTION:
 | |
| # The toolchain-funcs aims to provide a complete suite of functions
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| # for gleaning useful information about the toolchain and to simplify
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| # ugly things like cross-compiling and multilib.  All of this is done
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| # in such a way that you can rely on the function always returning
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| # something sane.
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| 
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| if [[ -z ${_TOOLCHAIN_FUNCS_ECLASS} ]]; then
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| _TOOLCHAIN_FUNCS_ECLASS=1
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| 
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| inherit multilib
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| 
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| # tc-getPROG <VAR [search vars]> <default> [tuple]
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| _tc-getPROG() {
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| 	local tuple=$1
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| 	local v var vars=$2
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| 	local prog=( $3 )
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| 
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| 	var=${vars%% *}
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| 	for v in ${vars} ; do
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| 		if [[ -n ${!v} ]] ; then
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| 			export ${var}="${!v}"
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| 			echo "${!v}"
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| 			return 0
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| 		fi
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| 	done
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| 
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| 	local search=
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| 	[[ -n $4 ]] && search=$(type -p $4-${prog[0]})
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| 	[[ -z ${search} && -n ${!tuple} ]] && search=$(type -p ${!tuple}-${prog[0]})
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| 	[[ -n ${search} ]] && prog[0]=${search##*/}
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| 
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| 	export ${var}="${prog[*]}"
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| 	echo "${!var}"
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| }
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| tc-getBUILD_PROG() {
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| 	local vars="BUILD_$1 $1_FOR_BUILD HOST$1"
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| 	# respect host vars if not cross-compiling
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| 	# https://bugs.gentoo.org/630282
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| 	tc-is-cross-compiler || vars+=" $1"
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| 	_tc-getPROG CBUILD "${vars}" "${@:2}"
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| }
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| tc-getPROG() { _tc-getPROG CHOST "$@"; }
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| 
 | |
| # @FUNCTION: tc-getAR
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the archiver
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| tc-getAR() { tc-getPROG AR ar "$@"; }
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| # @FUNCTION: tc-getAS
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the assembler
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| tc-getAS() { tc-getPROG AS as "$@"; }
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| # @FUNCTION: tc-getCC
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the C compiler
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| tc-getCC() { tc-getPROG CC gcc "$@"; }
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| # @FUNCTION: tc-getCPP
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the C preprocessor
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| tc-getCPP() { tc-getPROG CPP "${CC:-gcc} -E" "$@"; }
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| # @FUNCTION: tc-getCXX
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the C++ compiler
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| tc-getCXX() { tc-getPROG CXX g++ "$@"; }
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| # @FUNCTION: tc-getLD
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the linker
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| tc-getLD() { tc-getPROG LD ld "$@"; }
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| # @FUNCTION: tc-getSTRINGS
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the strings program
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| tc-getSTRINGS() { tc-getPROG STRINGS strings "$@"; }
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| # @FUNCTION: tc-getSTRIP
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the strip program
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| tc-getSTRIP() { tc-getPROG STRIP strip "$@"; }
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| # @FUNCTION: tc-getNM
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the symbol/object thingy
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| tc-getNM() { tc-getPROG NM nm "$@"; }
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| # @FUNCTION: tc-getRANLIB
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the archive indexer
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| tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; }
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| # @FUNCTION: tc-getREADELF
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the ELF reader
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| tc-getREADELF() { tc-getPROG READELF readelf "$@"; }
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| # @FUNCTION: tc-getOBJCOPY
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the object copier
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| tc-getOBJCOPY() { tc-getPROG OBJCOPY objcopy "$@"; }
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| # @FUNCTION: tc-getOBJDUMP
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the object dumper
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| tc-getOBJDUMP() { tc-getPROG OBJDUMP objdump "$@"; }
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| # @FUNCTION: tc-getF77
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the Fortran 77 compiler
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| tc-getF77() { tc-getPROG F77 gfortran "$@"; }
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| # @FUNCTION: tc-getFC
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the Fortran 90 compiler
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| tc-getFC() { tc-getPROG FC gfortran "$@"; }
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| # @FUNCTION: tc-getGCJ
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the java compiler
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| tc-getGCJ() { tc-getPROG GCJ gcj "$@"; }
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| # @FUNCTION: tc-getGO
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the Go compiler
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| tc-getGO() { tc-getPROG GO gccgo "$@"; }
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| # @FUNCTION: tc-getPKG_CONFIG
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the pkg-config tool
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| tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; }
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| # @FUNCTION: tc-getRC
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the Windows resource compiler
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| tc-getRC() { tc-getPROG RC windres "$@"; }
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| # @FUNCTION: tc-getDLLWRAP
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the Windows dllwrap utility
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| tc-getDLLWRAP() { tc-getPROG DLLWRAP dllwrap "$@"; }
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| 
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| # @FUNCTION: tc-getBUILD_AR
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the archiver for building binaries to run on the build machine
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| tc-getBUILD_AR() { tc-getBUILD_PROG AR ar "$@"; }
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| # @FUNCTION: tc-getBUILD_AS
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the assembler for building binaries to run on the build machine
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| tc-getBUILD_AS() { tc-getBUILD_PROG AS as "$@"; }
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| # @FUNCTION: tc-getBUILD_CC
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the C compiler for building binaries to run on the build machine
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| tc-getBUILD_CC() { tc-getBUILD_PROG CC gcc "$@"; }
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| # @FUNCTION: tc-getBUILD_CPP
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the C preprocessor for building binaries to run on the build machine
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| tc-getBUILD_CPP() { tc-getBUILD_PROG CPP "$(tc-getBUILD_CC) -E" "$@"; }
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| # @FUNCTION: tc-getBUILD_CXX
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the C++ compiler for building binaries to run on the build machine
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| tc-getBUILD_CXX() { tc-getBUILD_PROG CXX g++ "$@"; }
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| # @FUNCTION: tc-getBUILD_LD
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the linker for building binaries to run on the build machine
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| tc-getBUILD_LD() { tc-getBUILD_PROG LD ld "$@"; }
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| # @FUNCTION: tc-getBUILD_STRINGS
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the strings program for building binaries to run on the build machine
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| tc-getBUILD_STRINGS() { tc-getBUILD_PROG STRINGS strings "$@"; }
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| # @FUNCTION: tc-getBUILD_STRIP
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the strip program for building binaries to run on the build machine
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| tc-getBUILD_STRIP() { tc-getBUILD_PROG STRIP strip "$@"; }
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| # @FUNCTION: tc-getBUILD_NM
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the symbol/object thingy for building binaries to run on the build machine
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| tc-getBUILD_NM() { tc-getBUILD_PROG NM nm "$@"; }
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| # @FUNCTION: tc-getBUILD_RANLIB
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the archive indexer for building binaries to run on the build machine
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| tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; }
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| # @FUNCTION: tc-getBUILD_READELF
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the ELF reader for building binaries to run on the build machine
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| tc-getBUILD_READELF() { tc-getBUILD_PROG READELF readelf "$@"; }
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| # @FUNCTION: tc-getBUILD_OBJCOPY
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the object copier for building binaries to run on the build machine
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| tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; }
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| # @FUNCTION: tc-getBUILD_PKG_CONFIG
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the pkg-config tool for building binaries to run on the build machine
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| tc-getBUILD_PKG_CONFIG() { tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"; }
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| 
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| # @FUNCTION: tc-getTARGET_CPP
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| # @USAGE: [toolchain prefix]
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| # @RETURN: name of the C preprocessor for the toolchain being built (or used)
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| tc-getTARGET_CPP() {
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| 	if [[ -n ${CTARGET} ]]; then
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| 		_tc-getPROG CTARGET TARGET_CPP "gcc -E" "$@"
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| 	else
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| 		tc-getCPP "$@"
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| 	fi
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| }
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| 
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| # @FUNCTION: tc-export
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| # @USAGE: <list of toolchain variables>
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| # @DESCRIPTION:
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| # Quick way to export a bunch of compiler vars at once.
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| tc-export() {
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| 	local var
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| 	for var in "$@" ; do
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| 		[[ $(type -t "tc-get${var}") != "function" ]] && die "tc-export: invalid export variable '${var}'"
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| 		"tc-get${var}" > /dev/null
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| 	done
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| }
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| 
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| # @FUNCTION: tc-is-cross-compiler
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| # @RETURN: Shell true if we are using a cross-compiler, shell false otherwise
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| tc-is-cross-compiler() {
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| 	[[ ${CBUILD:-${CHOST}} != ${CHOST} ]]
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| }
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| 
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| # @FUNCTION: tc-cpp-is-true
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| # @USAGE: <condition> [cpp flags]
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| # @RETURN: Shell true if the condition is true, shell false otherwise.
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| # @DESCRIPTION:
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| # Evaluate the given condition using the C preprocessor for CTARGET, if
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| # defined, or CHOST. Additional arguments are passed through to the cpp
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| # command. A typical condition would be in the form defined(__FOO__).
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| tc-cpp-is-true() {
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| 	local CONDITION=${1}
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| 	shift
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| 
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| 	$(tc-getTARGET_CPP) "${@}" -P - <<-EOF >/dev/null 2>&1
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| 		#if ${CONDITION}
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| 		true
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| 		#else
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| 		#error false
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| 		#endif
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| 	EOF
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| }
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| 
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| # @FUNCTION: tc-detect-is-softfloat
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| # @RETURN: Shell true if detection was possible, shell false otherwise
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| # @DESCRIPTION:
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| # Detect whether the CTARGET (or CHOST) toolchain is a softfloat based
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| # one by examining the toolchain's output, if possible.  Outputs a value
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| # alike tc-is-softfloat if detection was possible.
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| tc-detect-is-softfloat() {
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| 	# If fetching CPP falls back to the default (gcc -E) then fail
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| 	# detection as this may not be the correct toolchain.
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| 	[[ $(tc-getTARGET_CPP) == "gcc -E" ]] && return 1
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| 
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| 	case ${CTARGET:-${CHOST}} in
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| 		# Avoid autodetection for bare-metal targets. bug #666896
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| 		*-newlib|*-elf|*-eabi)
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| 			return 1 ;;
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| 
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| 		# arm-unknown-linux-gnueabi is ambiguous. We used to treat it as
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| 		# hardfloat but we now treat it as softfloat like most everyone
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| 		# else. Check existing toolchains to respect existing systems.
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| 		arm*)
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| 			if tc-cpp-is-true "defined(__ARM_PCS_VFP)"; then
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| 				echo "no"
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| 			else
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| 				# Confusingly __SOFTFP__ is defined only when
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| 				# -mfloat-abi is soft, not softfp.
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| 				if tc-cpp-is-true "defined(__SOFTFP__)"; then
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| 					echo "yes"
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| 				else
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| 					echo "softfp"
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| 				fi
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| 			fi
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| 
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| 			return 0 ;;
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| 		*)
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| 			return 1 ;;
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| 	esac
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| }
 | |
| 
 | |
| # @FUNCTION: tc-tuple-is-softfloat
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| # @RETURN: See tc-is-softfloat for the possible values.
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| # @DESCRIPTION:
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| # Determine whether the CTARGET (or CHOST) toolchain is a softfloat
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| # based one solely from the tuple.
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| tc-tuple-is-softfloat() {
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| 	local CTARGET=${CTARGET:-${CHOST}}
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| 	case ${CTARGET//_/-} in
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| 		bfin*|h8300*)
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| 			echo "only" ;;
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| 		*-softfloat-*)
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| 			echo "yes" ;;
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| 		*-softfp-*)
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| 			echo "softfp" ;;
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| 		arm*-hardfloat-*|arm*eabihf)
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| 			echo "no" ;;
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| 		# bare-metal targets have their defaults. bug #666896
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| 		*-newlib|*-elf|*-eabi)
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| 			echo "no" ;;
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| 		arm*)
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| 			echo "yes" ;;
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| 		*)
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| 			echo "no" ;;
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| 	esac
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| }
 | |
| 
 | |
| # @FUNCTION: tc-is-softfloat
 | |
| # @DESCRIPTION:
 | |
| # See if this toolchain is a softfloat based one.
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| # @CODE
 | |
| # The possible return values:
 | |
| #  - only:   the target is always softfloat (never had fpu)
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| #  - yes:    the target should support softfloat
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| #  - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention
 | |
| #  - no:     the target doesn't support softfloat
 | |
| # @CODE
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| # This allows us to react differently where packages accept
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| # softfloat flags in the case where support is optional, but
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| # rejects softfloat flags where the target always lacks an fpu.
 | |
| tc-is-softfloat() {
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| 	tc-detect-is-softfloat || tc-tuple-is-softfloat
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-is-static-only
 | |
| # @DESCRIPTION:
 | |
| # Return shell true if the target does not support shared libs, shell false
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| # otherwise.
 | |
| tc-is-static-only() {
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| 	local host=${CTARGET:-${CHOST}}
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| 
 | |
| 	# *MiNT doesn't have shared libraries, only platform so far
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| 	[[ ${host} == *-mint* ]]
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-stack-grows-down
 | |
| # @DESCRIPTION:
 | |
| # Return shell true if the stack grows down.  This is the default behavior
 | |
| # for the vast majority of systems out there and usually projects shouldn't
 | |
| # care about such internal details.
 | |
| tc-stack-grows-down() {
 | |
| 	# List the few that grow up.
 | |
| 	case ${ARCH} in
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| 	hppa|metag) return 1 ;;
 | |
| 	esac
 | |
| 
 | |
| 	# Assume all others grow down.
 | |
| 	return 0
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-export_build_env
 | |
| # @USAGE: [compiler variables]
 | |
| # @DESCRIPTION:
 | |
| # Export common build related compiler settings.
 | |
| tc-export_build_env() {
 | |
| 	tc-export "$@"
 | |
| 	if tc-is-cross-compiler; then
 | |
| 		# Some build envs will initialize vars like:
 | |
| 		# : ${BUILD_LDFLAGS:-${LDFLAGS}}
 | |
| 		# So make sure all variables are non-empty. #526734
 | |
| 		: ${BUILD_CFLAGS:=-O1 -pipe}
 | |
| 		: ${BUILD_CXXFLAGS:=-O1 -pipe}
 | |
| 		: ${BUILD_CPPFLAGS:= }
 | |
| 		: ${BUILD_LDFLAGS:= }
 | |
| 	else
 | |
| 		# https://bugs.gentoo.org/654424
 | |
| 		: ${BUILD_CFLAGS:=${CFLAGS}}
 | |
| 		: ${BUILD_CXXFLAGS:=${CXXFLAGS}}
 | |
| 		: ${BUILD_CPPFLAGS:=${CPPFLAGS}}
 | |
| 		: ${BUILD_LDFLAGS:=${LDFLAGS}}
 | |
| 	fi
 | |
| 	export BUILD_{C,CXX,CPP,LD}FLAGS
 | |
| 
 | |
| 	# Some packages use XXX_FOR_BUILD.
 | |
| 	local v
 | |
| 	for v in BUILD_{C,CXX,CPP,LD}FLAGS ; do
 | |
| 		export ${v#BUILD_}_FOR_BUILD="${!v}"
 | |
| 	done
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-env_build
 | |
| # @USAGE: <command> [command args]
 | |
| # @INTERNAL
 | |
| # @DESCRIPTION:
 | |
| # Setup the compile environment to the build tools and then execute the
 | |
| # specified command.  We use tc-getBUILD_XX here so that we work with
 | |
| # all of the semi-[non-]standard env vars like $BUILD_CC which often
 | |
| # the target build system does not check.
 | |
| tc-env_build() {
 | |
| 	tc-export_build_env
 | |
| 	CFLAGS=${BUILD_CFLAGS} \
 | |
| 	CXXFLAGS=${BUILD_CXXFLAGS} \
 | |
| 	CPPFLAGS=${BUILD_CPPFLAGS} \
 | |
| 	LDFLAGS=${BUILD_LDFLAGS} \
 | |
| 	AR=$(tc-getBUILD_AR) \
 | |
| 	AS=$(tc-getBUILD_AS) \
 | |
| 	CC=$(tc-getBUILD_CC) \
 | |
| 	CPP=$(tc-getBUILD_CPP) \
 | |
| 	CXX=$(tc-getBUILD_CXX) \
 | |
| 	LD=$(tc-getBUILD_LD) \
 | |
| 	NM=$(tc-getBUILD_NM) \
 | |
| 	PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \
 | |
| 	RANLIB=$(tc-getBUILD_RANLIB) \
 | |
| 	READELF=$(tc-getBUILD_READELF) \
 | |
| 	"$@"
 | |
| }
 | |
| 
 | |
| # @FUNCTION: econf_build
 | |
| # @USAGE: [econf flags]
 | |
| # @DESCRIPTION:
 | |
| # Sometimes we need to locally build up some tools to run on CBUILD because
 | |
| # the package has helper utils which are compiled+executed when compiling.
 | |
| # This won't work when cross-compiling as the CHOST is set to a target which
 | |
| # we cannot natively execute.
 | |
| #
 | |
| # For example, the python package will build up a local python binary using
 | |
| # a portable build system (configure+make), but then use that binary to run
 | |
| # local python scripts to build up other components of the overall python.
 | |
| # We cannot rely on the python binary in $PATH as that often times will be
 | |
| # a different version, or not even installed in the first place.  Instead,
 | |
| # we compile the code in a different directory to run on CBUILD, and then
 | |
| # use that binary when compiling the main package to run on CHOST.
 | |
| #
 | |
| # For example, with newer EAPIs, you'd do something like:
 | |
| # @CODE
 | |
| # src_configure() {
 | |
| # 	ECONF_SOURCE=${S}
 | |
| # 	if tc-is-cross-compiler ; then
 | |
| # 		mkdir "${WORKDIR}"/${CBUILD}
 | |
| # 		pushd "${WORKDIR}"/${CBUILD} >/dev/null
 | |
| # 		econf_build --disable-some-unused-stuff
 | |
| # 		popd >/dev/null
 | |
| # 	fi
 | |
| # 	... normal build paths ...
 | |
| # }
 | |
| # src_compile() {
 | |
| # 	if tc-is-cross-compiler ; then
 | |
| # 		pushd "${WORKDIR}"/${CBUILD} >/dev/null
 | |
| # 		emake one-or-two-build-tools
 | |
| # 		ln/mv build-tools to normal build paths in ${S}/
 | |
| # 		popd >/dev/null
 | |
| # 	fi
 | |
| # 	... normal build paths ...
 | |
| # }
 | |
| # @CODE
 | |
| econf_build() {
 | |
| 	local CBUILD=${CBUILD:-${CHOST}}
 | |
| 	tc-env_build econf --build=${CBUILD} --host=${CBUILD} "$@"
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-ld-is-gold
 | |
| # @USAGE: [toolchain prefix]
 | |
| # @DESCRIPTION:
 | |
| # Return true if the current linker is set to gold.
 | |
| tc-ld-is-gold() {
 | |
| 	local out
 | |
| 
 | |
| 	# First check the linker directly.
 | |
| 	out=$($(tc-getLD "$@") --version 2>&1)
 | |
| 	if [[ ${out} == *"GNU gold"* ]] ; then
 | |
| 		return 0
 | |
| 	fi
 | |
| 
 | |
| 	# Then see if they're selecting gold via compiler flags.
 | |
| 	# Note: We're assuming they're using LDFLAGS to hold the
 | |
| 	# options and not CFLAGS/CXXFLAGS.
 | |
| 	local base="${T}/test-tc-gold"
 | |
| 	cat <<-EOF > "${base}.c"
 | |
| 	int main() { return 0; }
 | |
| 	EOF
 | |
| 	out=$($(tc-getCC "$@") ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} -Wl,--version "${base}.c" -o "${base}" 2>&1)
 | |
| 	rm -f "${base}"*
 | |
| 	if [[ ${out} == *"GNU gold"* ]] ; then
 | |
| 		return 0
 | |
| 	fi
 | |
| 
 | |
| 	# No gold here!
 | |
| 	return 1
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-ld-is-lld
 | |
| # @USAGE: [toolchain prefix]
 | |
| # @DESCRIPTION:
 | |
| # Return true if the current linker is set to lld.
 | |
| tc-ld-is-lld() {
 | |
| 	local out
 | |
| 
 | |
| 	# First check the linker directly.
 | |
| 	out=$($(tc-getLD "$@") --version 2>&1)
 | |
| 	if [[ ${out} == *"LLD"* ]] ; then
 | |
| 		return 0
 | |
| 	fi
 | |
| 
 | |
| 	# Then see if they're selecting lld via compiler flags.
 | |
| 	# Note: We're assuming they're using LDFLAGS to hold the
 | |
| 	# options and not CFLAGS/CXXFLAGS.
 | |
| 	local base="${T}/test-tc-lld"
 | |
| 	cat <<-EOF > "${base}.c"
 | |
| 	int main() { return 0; }
 | |
| 	EOF
 | |
| 	out=$($(tc-getCC "$@") ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} -Wl,--version "${base}.c" -o "${base}" 2>&1)
 | |
| 	rm -f "${base}"*
 | |
| 	if [[ ${out} == *"LLD"* ]] ; then
 | |
| 		return 0
 | |
| 	fi
 | |
| 
 | |
| 	# No lld here!
 | |
| 	return 1
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-ld-disable-gold
 | |
| # @USAGE: [toolchain prefix]
 | |
| # @DESCRIPTION:
 | |
| # If the gold linker is currently selected, configure the compilation
 | |
| # settings so that we use the older bfd linker instead.
 | |
| tc-ld-disable-gold() {
 | |
| 	tc-ld-is-gold "$@" && tc-ld-force-bfd "$@"
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-ld-force-bfd
 | |
| # @USAGE: [toolchain prefix]
 | |
| # @DESCRIPTION:
 | |
| # If the gold or lld linker is currently selected, configure the compilation
 | |
| # settings so that we use the bfd linker instead.
 | |
| tc-ld-force-bfd() {
 | |
| 	if ! tc-ld-is-gold "$@" && ! tc-ld-is-lld "$@" ; then
 | |
| 		# They aren't using gold or lld, so nothing to do!
 | |
| 		return
 | |
| 	fi
 | |
| 
 | |
| 	ewarn "Forcing usage of the BFD linker"
 | |
| 
 | |
| 	# Set up LD to point directly to bfd if it's available.
 | |
| 	# We need to extract the first word in case there are flags appended
 | |
| 	# to its value (like multilib).  #545218
 | |
| 	local ld=$(tc-getLD "$@")
 | |
| 	local bfd_ld="${ld%% *}.bfd"
 | |
| 	local path_ld=$(which "${bfd_ld}" 2>/dev/null)
 | |
| 	[[ -e ${path_ld} ]] && export LD=${bfd_ld}
 | |
| 
 | |
| 	# Set up LDFLAGS to select bfd based on the gcc / clang version.
 | |
| 	local fallback="true"
 | |
| 	if tc-is-gcc; then
 | |
| 		local major=$(gcc-major-version "$@")
 | |
| 		local minor=$(gcc-minor-version "$@")
 | |
| 		if [[ ${major} -gt 4 ]] || [[ ${major} -eq 4 && ${minor} -ge 8 ]]; then
 | |
| 			# gcc-4.8+ supports -fuse-ld directly.
 | |
| 			export LDFLAGS="${LDFLAGS} -fuse-ld=bfd"
 | |
| 			fallback="false"
 | |
| 		fi
 | |
| 	elif tc-is-clang; then
 | |
| 		local major=$(clang-major-version "$@")
 | |
| 		local minor=$(clang-minor-version "$@")
 | |
| 		if [[ ${major} -gt 3 ]] || [[ ${major} -eq 3 && ${minor} -ge 5 ]]; then
 | |
| 			# clang-3.5+ supports -fuse-ld directly.
 | |
| 			export LDFLAGS="${LDFLAGS} -fuse-ld=bfd"
 | |
| 			fallback="false"
 | |
| 		fi
 | |
| 	fi
 | |
| 	if [[ ${fallback} == "true" ]] ; then
 | |
| 		# <=gcc-4.7 and <=clang-3.4 require some coercion.
 | |
| 		# Only works if bfd exists.
 | |
| 		if [[ -e ${path_ld} ]] ; then
 | |
| 			local d="${T}/bfd-linker"
 | |
| 			mkdir -p "${d}"
 | |
| 			ln -sf "${path_ld}" "${d}"/ld
 | |
| 			export LDFLAGS="${LDFLAGS} -B${d}"
 | |
| 		else
 | |
| 			die "unable to locate a BFD linker"
 | |
| 		fi
 | |
| 	fi
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-has-openmp
 | |
| # @USAGE: [toolchain prefix]
 | |
| # @DESCRIPTION:
 | |
| # See if the toolchain supports OpenMP.
 | |
| tc-has-openmp() {
 | |
| 	local base="${T}/test-tc-openmp"
 | |
| 	cat <<-EOF > "${base}.c"
 | |
| 	#include <omp.h>
 | |
| 	int main() {
 | |
| 		int nthreads, tid, ret = 0;
 | |
| 		#pragma omp parallel private(nthreads, tid)
 | |
| 		{
 | |
| 		tid = omp_get_thread_num();
 | |
| 		nthreads = omp_get_num_threads(); ret += tid + nthreads;
 | |
| 		}
 | |
| 		return ret;
 | |
| 	}
 | |
| 	EOF
 | |
| 	$(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null
 | |
| 	local ret=$?
 | |
| 	rm -f "${base}"*
 | |
| 	return ${ret}
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-check-openmp
 | |
| # @DESCRIPTION:
 | |
| # Test for OpenMP support with the current compiler and error out with
 | |
| # a clear error message, telling the user how to rectify the missing
 | |
| # OpenMP support that has been requested by the ebuild. Using this function
 | |
| # to test for OpenMP support should be preferred over tc-has-openmp and
 | |
| # printing a custom message, as it presents a uniform interface to the user.
 | |
| tc-check-openmp() {
 | |
| 	if ! tc-has-openmp; then
 | |
| 		eerror "Your current compiler does not support OpenMP!"
 | |
| 
 | |
| 		if tc-is-gcc; then
 | |
| 			eerror "Enable OpenMP support by building sys-devel/gcc with USE=\"openmp\"."
 | |
| 		elif tc-is-clang; then
 | |
| 			eerror "OpenMP support in sys-devel/clang is provided by sys-libs/libomp."
 | |
| 		fi
 | |
| 
 | |
| 		die "Active compiler does not have required support for OpenMP"
 | |
| 	fi
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-has-tls
 | |
| # @USAGE: [-s|-c|-l] [toolchain prefix]
 | |
| # @DESCRIPTION:
 | |
| # See if the toolchain supports thread local storage (TLS).  Use -s to test the
 | |
| # compiler, -c to also test the assembler, and -l to also test the C library
 | |
| # (the default).
 | |
| tc-has-tls() {
 | |
| 	local base="${T}/test-tc-tls"
 | |
| 	cat <<-EOF > "${base}.c"
 | |
| 	int foo(int *i) {
 | |
| 		static __thread int j = 0;
 | |
| 		return *i ? j : *i;
 | |
| 	}
 | |
| 	EOF
 | |
| 	local flags
 | |
| 	case $1 in
 | |
| 		-s) flags="-S";;
 | |
| 		-c) flags="-c";;
 | |
| 		-l) ;;
 | |
| 		-*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
 | |
| 	esac
 | |
| 	: ${flags:=-fPIC -shared -Wl,-z,defs}
 | |
| 	[[ $1 == -* ]] && shift
 | |
| 	$(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
 | |
| 	local ret=$?
 | |
| 	rm -f "${base}"*
 | |
| 	return ${ret}
 | |
| }
 | |
| 
 | |
| 
 | |
| # Parse information from CBUILD/CHOST/CTARGET rather than
 | |
| # use external variables from the profile.
 | |
| tc-ninja_magic_to_arch() {
 | |
| ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; }
 | |
| 
 | |
| 	local type=$1
 | |
| 	local host=$2
 | |
| 	[[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
 | |
| 
 | |
| 	case ${host} in
 | |
| 		aarch64*)	echo arm64;;
 | |
| 		alpha*)		echo alpha;;
 | |
| 		arm*)		echo arm;;
 | |
| 		avr*)		ninj avr32 avr;;
 | |
| 		bfin*)		ninj blackfin bfin;;
 | |
| 		c6x*)		echo c6x;;
 | |
| 		cris*)		echo cris;;
 | |
| 		frv*)		echo frv;;
 | |
| 		hexagon*)	echo hexagon;;
 | |
| 		hppa*)		ninj parisc hppa;;
 | |
| 		i?86*)
 | |
| 			# Starting with linux-2.6.24, the 'x86_64' and 'i386'
 | |
| 			# trees have been unified into 'x86'.
 | |
| 			# FreeBSD still uses i386
 | |
| 			if [[ ${type} == "kern" && ${host} == *freebsd* ]] ; then
 | |
| 				echo i386
 | |
| 			else
 | |
| 				echo x86
 | |
| 			fi
 | |
| 			;;
 | |
| 		ia64*)		echo ia64;;
 | |
| 		m68*)		echo m68k;;
 | |
| 		metag*)		echo metag;;
 | |
| 		microblaze*)	echo microblaze;;
 | |
| 		mips*)		echo mips;;
 | |
| 		nios2*)		echo nios2;;
 | |
| 		nios*)		echo nios;;
 | |
| 		or1k*|or32*)	echo openrisc;;
 | |
| 		powerpc*)
 | |
| 			# Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees
 | |
| 			# have been unified into simply 'powerpc', but until 2.6.16,
 | |
| 			# ppc32 is still using ARCH="ppc" as default
 | |
| 			if [[ ${type} == "kern" ]] ; then
 | |
| 				echo powerpc
 | |
| 			elif [[ ${host} == powerpc64* ]] ; then
 | |
| 				echo ppc64
 | |
| 			else
 | |
| 				echo ppc
 | |
| 			fi
 | |
| 			;;
 | |
| 		riscv*)		echo riscv;;
 | |
| 		s390*)		echo s390;;
 | |
| 		score*)		echo score;;
 | |
| 		sh64*)		ninj sh64 sh;;
 | |
| 		sh*)		echo sh;;
 | |
| 		sparc64*)	ninj sparc64 sparc;;
 | |
| 		sparc*)		[[ ${PROFILE_ARCH} == "sparc64" ]] \
 | |
| 						&& ninj sparc64 sparc \
 | |
| 						|| echo sparc
 | |
| 					;;
 | |
| 		tile*)		echo tile;;
 | |
| 		vax*)		echo vax;;
 | |
| 		x86_64*freebsd*) echo amd64;;
 | |
| 		x86_64*)
 | |
| 			# Starting with linux-2.6.24, the 'x86_64' and 'i386'
 | |
| 			# trees have been unified into 'x86'.
 | |
| 			if [[ ${type} == "kern" ]] ; then
 | |
| 				echo x86
 | |
| 			else
 | |
| 				echo amd64
 | |
| 			fi
 | |
| 			;;
 | |
| 		xtensa*)	echo xtensa;;
 | |
| 
 | |
| 		# since our usage of tc-arch is largely concerned with
 | |
| 		# normalizing inputs for testing ${CTARGET}, let's filter
 | |
| 		# other cross targets (mingw and such) into the unknown.
 | |
| 		*)			echo unknown;;
 | |
| 	esac
 | |
| }
 | |
| # @FUNCTION: tc-arch-kernel
 | |
| # @USAGE: [toolchain prefix]
 | |
| # @RETURN: name of the kernel arch according to the compiler target
 | |
| tc-arch-kernel() {
 | |
| 	tc-ninja_magic_to_arch kern "$@"
 | |
| }
 | |
| # @FUNCTION: tc-arch
 | |
| # @USAGE: [toolchain prefix]
 | |
| # @RETURN: name of the portage arch according to the compiler target
 | |
| tc-arch() {
 | |
| 	tc-ninja_magic_to_arch portage "$@"
 | |
| }
 | |
| 
 | |
| tc-endian() {
 | |
| 	local host=$1
 | |
| 	[[ -z ${host} ]] && host=${CTARGET:-${CHOST}}
 | |
| 	host=${host%%-*}
 | |
| 
 | |
| 	case ${host} in
 | |
| 		aarch64*be)	echo big;;
 | |
| 		aarch64)	echo little;;
 | |
| 		alpha*)		echo little;;
 | |
| 		arm*b*)		echo big;;
 | |
| 		arm*)		echo little;;
 | |
| 		cris*)		echo little;;
 | |
| 		hppa*)		echo big;;
 | |
| 		i?86*)		echo little;;
 | |
| 		ia64*)		echo little;;
 | |
| 		m68*)		echo big;;
 | |
| 		mips*l*)	echo little;;
 | |
| 		mips*)		echo big;;
 | |
| 		powerpc*le)	echo little;;
 | |
| 		powerpc*)	echo big;;
 | |
| 		riscv*)		echo little;;
 | |
| 		s390*)		echo big;;
 | |
| 		sh*b*)		echo big;;
 | |
| 		sh*)		echo little;;
 | |
| 		sparc*)		echo big;;
 | |
| 		x86_64*)	echo little;;
 | |
| 		*)			echo wtf;;
 | |
| 	esac
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-get-compiler-type
 | |
| # @RETURN: keyword identifying the compiler: gcc, clang, pathcc, unknown
 | |
| tc-get-compiler-type() {
 | |
| 	local code='
 | |
| #if defined(__PATHSCALE__)
 | |
| 	HAVE_PATHCC
 | |
| #elif defined(__clang__)
 | |
| 	HAVE_CLANG
 | |
| #elif defined(__GNUC__)
 | |
| 	HAVE_GCC
 | |
| #endif
 | |
| '
 | |
| 	local res=$($(tc-getCPP "$@") -E -P - <<<"${code}")
 | |
| 
 | |
| 	case ${res} in
 | |
| 		*HAVE_PATHCC*)	echo pathcc;;
 | |
| 		*HAVE_CLANG*)	echo clang;;
 | |
| 		*HAVE_GCC*)		echo gcc;;
 | |
| 		*)				echo unknown;;
 | |
| 	esac
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-is-gcc
 | |
| # @RETURN: Shell true if the current compiler is GCC, false otherwise.
 | |
| tc-is-gcc() {
 | |
| 	[[ $(tc-get-compiler-type) == gcc ]]
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-is-clang
 | |
| # @RETURN: Shell true if the current compiler is clang, false otherwise.
 | |
| tc-is-clang() {
 | |
| 	[[ $(tc-get-compiler-type) == clang ]]
 | |
| }
 | |
| 
 | |
| # Internal func.  The first argument is the version info to expand.
 | |
| # Query the preprocessor to improve compatibility across different
 | |
| # compilers rather than maintaining a --version flag matrix. #335943
 | |
| _gcc_fullversion() {
 | |
| 	local ver="$1"; shift
 | |
| 	set -- $($(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__")
 | |
| 	eval echo "$ver"
 | |
| }
 | |
| 
 | |
| # @FUNCTION: gcc-fullversion
 | |
| # @RETURN: compiler version (major.minor.micro: [3.4.6])
 | |
| gcc-fullversion() {
 | |
| 	_gcc_fullversion '$1.$2.$3' "$@"
 | |
| }
 | |
| # @FUNCTION: gcc-version
 | |
| # @RETURN: compiler version (major.minor: [3.4].6)
 | |
| gcc-version() {
 | |
| 	_gcc_fullversion '$1.$2' "$@"
 | |
| }
 | |
| # @FUNCTION: gcc-major-version
 | |
| # @RETURN: major compiler version (major: [3].4.6)
 | |
| gcc-major-version() {
 | |
| 	_gcc_fullversion '$1' "$@"
 | |
| }
 | |
| # @FUNCTION: gcc-minor-version
 | |
| # @RETURN: minor compiler version (minor: 3.[4].6)
 | |
| gcc-minor-version() {
 | |
| 	_gcc_fullversion '$2' "$@"
 | |
| }
 | |
| # @FUNCTION: gcc-micro-version
 | |
| # @RETURN: micro compiler version (micro: 3.4.[6])
 | |
| gcc-micro-version() {
 | |
| 	_gcc_fullversion '$3' "$@"
 | |
| }
 | |
| 
 | |
| # Internal func. Based on _gcc_fullversion() above.
 | |
| _clang_fullversion() {
 | |
| 	local ver="$1"; shift
 | |
| 	set -- $($(tc-getCPP "$@") -E -P - <<<"__clang_major__ __clang_minor__ __clang_patchlevel__")
 | |
| 	eval echo "$ver"
 | |
| }
 | |
| 
 | |
| # @FUNCTION: clang-fullversion
 | |
| # @RETURN: compiler version (major.minor.micro: [3.4.6])
 | |
| clang-fullversion() {
 | |
| 	_clang_fullversion '$1.$2.$3' "$@"
 | |
| }
 | |
| # @FUNCTION: clang-version
 | |
| # @RETURN: compiler version (major.minor: [3.4].6)
 | |
| clang-version() {
 | |
| 	_clang_fullversion '$1.$2' "$@"
 | |
| }
 | |
| # @FUNCTION: clang-major-version
 | |
| # @RETURN: major compiler version (major: [3].4.6)
 | |
| clang-major-version() {
 | |
| 	_clang_fullversion '$1' "$@"
 | |
| }
 | |
| # @FUNCTION: clang-minor-version
 | |
| # @RETURN: minor compiler version (minor: 3.[4].6)
 | |
| clang-minor-version() {
 | |
| 	_clang_fullversion '$2' "$@"
 | |
| }
 | |
| # @FUNCTION: clang-micro-version
 | |
| # @RETURN: micro compiler version (micro: 3.4.[6])
 | |
| clang-micro-version() {
 | |
| 	_clang_fullversion '$3' "$@"
 | |
| }
 | |
| 
 | |
| # Returns the installation directory - internal toolchain
 | |
| # function for use by _gcc-specs-exists (for flag-o-matic).
 | |
| _gcc-install-dir() {
 | |
| 	echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\
 | |
| 		awk '$1=="install:" {print $2}')"
 | |
| }
 | |
| # Returns true if the indicated specs file exists - internal toolchain
 | |
| # function for use by flag-o-matic.
 | |
| _gcc-specs-exists() {
 | |
| 	[[ -f $(_gcc-install-dir)/$1 ]]
 | |
| }
 | |
| 
 | |
| # Returns requested gcc specs directive unprocessed - for used by
 | |
| # gcc-specs-directive()
 | |
| # Note; later specs normally overwrite earlier ones; however if a later
 | |
| # spec starts with '+' then it appends.
 | |
| # gcc -dumpspecs is parsed first, followed by files listed by "gcc -v"
 | |
| # as "Reading <file>", in order.  Strictly speaking, if there's a
 | |
| # $(gcc_install_dir)/specs, the built-in specs aren't read, however by
 | |
| # the same token anything from 'gcc -dumpspecs' is overridden by
 | |
| # the contents of $(gcc_install_dir)/specs so the result is the
 | |
| # same either way.
 | |
| _gcc-specs-directive_raw() {
 | |
| 	local cc=$(tc-getCC)
 | |
| 	local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}')
 | |
| 	${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \
 | |
| 'BEGIN	{ pspec=""; spec=""; outside=1 }
 | |
| $1=="*"directive":"  { pspec=spec; spec=""; outside=0; next }
 | |
| 	outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next }
 | |
| 	spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next }
 | |
| 	{ spec=spec $0 }
 | |
| END	{ print spec }'
 | |
| 	return 0
 | |
| }
 | |
| 
 | |
| # Return the requested gcc specs directive, with all included
 | |
| # specs expanded.
 | |
| # Note, it does not check for inclusion loops, which cause it
 | |
| # to never finish - but such loops are invalid for gcc and we're
 | |
| # assuming gcc is operational.
 | |
| gcc-specs-directive() {
 | |
| 	local directive subdname subdirective
 | |
| 	directive="$(_gcc-specs-directive_raw $1)"
 | |
| 	while [[ ${directive} == *%\(*\)* ]]; do
 | |
| 		subdname=${directive/*%\(}
 | |
| 		subdname=${subdname/\)*}
 | |
| 		subdirective="$(_gcc-specs-directive_raw ${subdname})"
 | |
| 		directive="${directive//\%(${subdname})/${subdirective}}"
 | |
| 	done
 | |
| 	echo "${directive}"
 | |
| 	return 0
 | |
| }
 | |
| 
 | |
| # Returns true if gcc sets relro
 | |
| gcc-specs-relro() {
 | |
| 	local directive
 | |
| 	directive=$(gcc-specs-directive link_command)
 | |
| 	[[ "${directive/\{!norelro:}" != "${directive}" ]]
 | |
| }
 | |
| # Returns true if gcc sets now
 | |
| gcc-specs-now() {
 | |
| 	local directive
 | |
| 	directive=$(gcc-specs-directive link_command)
 | |
| 	[[ "${directive/\{!nonow:}" != "${directive}" ]]
 | |
| }
 | |
| # Returns true if gcc builds PIEs
 | |
| gcc-specs-pie() {
 | |
| 	local directive
 | |
| 	directive=$(gcc-specs-directive cc1)
 | |
| 	[[ "${directive/\{!nopie:}" != "${directive}" ]]
 | |
| }
 | |
| # Returns true if gcc builds with the stack protector
 | |
| gcc-specs-ssp() {
 | |
| 	local directive
 | |
| 	directive=$(gcc-specs-directive cc1)
 | |
| 	[[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]
 | |
| }
 | |
| # Returns true if gcc upgrades fstack-protector to fstack-protector-all
 | |
| gcc-specs-ssp-to-all() {
 | |
| 	local directive
 | |
| 	directive=$(gcc-specs-directive cc1)
 | |
| 	[[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]
 | |
| }
 | |
| # Returns true if gcc builds with fno-strict-overflow
 | |
| gcc-specs-nostrict() {
 | |
| 	local directive
 | |
| 	directive=$(gcc-specs-directive cc1)
 | |
| 	[[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]
 | |
| }
 | |
| # Returns true if gcc builds with fstack-check
 | |
| gcc-specs-stack-check() {
 | |
| 	local directive
 | |
| 	directive=$(gcc-specs-directive cc1)
 | |
| 	[[ "${directive/\{!fno-stack-check:}" != "${directive}" ]]
 | |
| }
 | |
| 
 | |
| 
 | |
| # @FUNCTION: tc-enables-pie
 | |
| # @RETURN: Truth if the current compiler generates position-independent code (PIC) which can be linked into executables
 | |
| # @DESCRIPTION:
 | |
| # Return truth if the current compiler generates position-independent code (PIC)
 | |
| # which can be linked into executables.
 | |
| tc-enables-pie() {
 | |
| 	tc-cpp-is-true "defined(__PIE__)" ${CPPFLAGS} ${CFLAGS}
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-enables-ssp
 | |
| # @RETURN: Truth if the current compiler enables stack smashing protection (SSP) on at least minimal level
 | |
| # @DESCRIPTION:
 | |
| # Return truth if the current compiler enables stack smashing protection (SSP)
 | |
| # on level corresponding to any of the following options:
 | |
| #  -fstack-protector
 | |
| #  -fstack-protector-strong
 | |
| #  -fstack-protector-all
 | |
| tc-enables-ssp() {
 | |
| 	tc-cpp-is-true "defined(__SSP__) || defined(__SSP_STRONG__) || defined(__SSP_ALL__)" ${CPPFLAGS} ${CFLAGS}
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-enables-ssp-strong
 | |
| # @RETURN: Truth if the current compiler enables stack smashing protection (SSP) on at least middle level
 | |
| # @DESCRIPTION:
 | |
| # Return truth if the current compiler enables stack smashing protection (SSP)
 | |
| # on level corresponding to any of the following options:
 | |
| #  -fstack-protector-strong
 | |
| #  -fstack-protector-all
 | |
| tc-enables-ssp-strong() {
 | |
| 	tc-cpp-is-true "defined(__SSP_STRONG__) || defined(__SSP_ALL__)" ${CPPFLAGS} ${CFLAGS}
 | |
| }
 | |
| 
 | |
| # @FUNCTION: tc-enables-ssp-all
 | |
| # @RETURN: Truth if the current compiler enables stack smashing protection (SSP) on maximal level
 | |
| # @DESCRIPTION:
 | |
| # Return truth if the current compiler enables stack smashing protection (SSP)
 | |
| # on level corresponding to any of the following options:
 | |
| #  -fstack-protector-all
 | |
| tc-enables-ssp-all() {
 | |
| 	tc-cpp-is-true "defined(__SSP_ALL__)" ${CPPFLAGS} ${CFLAGS}
 | |
| }
 | |
| 
 | |
| 
 | |
| # @FUNCTION: gen_usr_ldscript
 | |
| # @USAGE: [-a] <list of libs to create linker scripts for>
 | |
| # @DESCRIPTION:
 | |
| # This function is deprecated. Use the version from
 | |
| # usr-ldscript.eclass instead.
 | |
| gen_usr_ldscript() {
 | |
| 	ewarn "${FUNCNAME}: Please migrate to usr-ldscript.eclass"
 | |
| 
 | |
| 	local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname)
 | |
| 	[[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/
 | |
| 
 | |
| 	tc-is-static-only && return
 | |
| 
 | |
| 	# We only care about stuffing / for the native ABI. #479448
 | |
| 	if [[ $(type -t multilib_is_native_abi) == "function" ]] ; then
 | |
| 		multilib_is_native_abi || return 0
 | |
| 	fi
 | |
| 
 | |
| 	# Eventually we'd like to get rid of this func completely #417451
 | |
| 	case ${CTARGET:-${CHOST}} in
 | |
| 	*-darwin*) ;;
 | |
| 	*-android*) return 0 ;;
 | |
| 	*linux*|*-freebsd*|*-openbsd*|*-netbsd*)
 | |
| 		use prefix && return 0 ;;
 | |
| 	*) return 0 ;;
 | |
| 	esac
 | |
| 
 | |
| 	# Just make sure it exists
 | |
| 	dodir /usr/${libdir}
 | |
| 
 | |
| 	if [[ $1 == "-a" ]] ; then
 | |
| 		auto=true
 | |
| 		shift
 | |
| 		dodir /${libdir}
 | |
| 	fi
 | |
| 
 | |
| 	# OUTPUT_FORMAT gives hints to the linker as to what binary format
 | |
| 	# is referenced ... makes multilib saner
 | |
| 	local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose )
 | |
| 	if $(tc-getLD) --version | grep -q 'GNU gold' ; then
 | |
| 		# If they're using gold, manually invoke the old bfd. #487696
 | |
| 		local d="${T}/bfd-linker"
 | |
| 		mkdir -p "${d}"
 | |
| 		ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld
 | |
| 		flags+=( -B"${d}" )
 | |
| 	fi
 | |
| 	output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
 | |
| 	[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
 | |
| 
 | |
| 	for lib in "$@" ; do
 | |
| 		local tlib
 | |
| 		if ${auto} ; then
 | |
| 			lib="lib${lib}${suffix}"
 | |
| 		else
 | |
| 			# Ensure /lib/${lib} exists to avoid dangling scripts/symlinks.
 | |
| 			# This especially is for AIX where $(get_libname) can return ".a",
 | |
| 			# so /lib/${lib} might be moved to /usr/lib/${lib} (by accident).
 | |
| 			[[ -r ${ED}/${libdir}/${lib} ]] || continue
 | |
| 			#TODO: better die here?
 | |
| 		fi
 | |
| 
 | |
| 		case ${CTARGET:-${CHOST}} in
 | |
| 		*-darwin*)
 | |
| 			if ${auto} ; then
 | |
| 				tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
 | |
| 			else
 | |
| 				tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib})
 | |
| 			fi
 | |
| 			[[ -z ${tlib} ]] && die "unable to read install_name from ${lib}"
 | |
| 			tlib=${tlib##*/}
 | |
| 
 | |
| 			if ${auto} ; then
 | |
| 				mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
 | |
| 				# some install_names are funky: they encode a version
 | |
| 				if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then
 | |
| 					mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die
 | |
| 				fi
 | |
| 				rm -f "${ED}"/${libdir}/${lib}
 | |
| 			fi
 | |
| 
 | |
| 			# Mach-O files have an id, which is like a soname, it tells how
 | |
| 			# another object linking against this lib should reference it.
 | |
| 			# Since we moved the lib from usr/lib into lib this reference is
 | |
| 			# wrong.  Hence, we update it here.  We don't configure with
 | |
| 			# libdir=/lib because that messes up libtool files.
 | |
| 			# Make sure we don't lose the specific version, so just modify the
 | |
| 			# existing install_name
 | |
| 			if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then
 | |
| 				chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it
 | |
| 				local nowrite=yes
 | |
| 			fi
 | |
| 			install_name_tool \
 | |
| 				-id "${EPREFIX}"/${libdir}/${tlib} \
 | |
| 				"${ED}"/${libdir}/${tlib} || die "install_name_tool failed"
 | |
| 			[[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}"
 | |
| 			# Now as we don't use GNU binutils and our linker doesn't
 | |
| 			# understand linker scripts, just create a symlink.
 | |
| 			pushd "${ED}/usr/${libdir}" > /dev/null
 | |
| 			ln -snf "../../${libdir}/${tlib}" "${lib}"
 | |
| 			popd > /dev/null
 | |
| 			;;
 | |
| 		*)
 | |
| 			if ${auto} ; then
 | |
| 				tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib})
 | |
| 				[[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}"
 | |
| 				mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die
 | |
| 				# some SONAMEs are funky: they encode a version before the .so
 | |
| 				if [[ ${tlib} != ${lib}* ]] ; then
 | |
| 					mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die
 | |
| 				fi
 | |
| 				rm -f "${ED}"/${libdir}/${lib}
 | |
| 			else
 | |
| 				tlib=${lib}
 | |
| 			fi
 | |
| 			cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT
 | |
| 			/* GNU ld script
 | |
| 			   Since Gentoo has critical dynamic libraries in /lib, and the static versions
 | |
| 			   in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we
 | |
| 			   run into linking problems.  This "fake" dynamic lib is a linker script that
 | |
| 			   redirects the linker to the real lib.  And yes, this works in the cross-
 | |
| 			   compiling scenario as the sysroot-ed linker will prepend the real path.
 | |
| 
 | |
| 			   See bug https://bugs.gentoo.org/4411 for more info.
 | |
| 			 */
 | |
| 			${output_format}
 | |
| 			GROUP ( ${EPREFIX}/${libdir}/${tlib} )
 | |
| 			END_LDSCRIPT
 | |
| 			;;
 | |
| 		esac
 | |
| 		fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}"
 | |
| 	done
 | |
| }
 | |
| 
 | |
| fi
 |