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# Copyright 1999-2015 Gentoo Foundation |
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# Distributed under the terms of the GNU General Public License v2 |
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# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.135 2015/03/16 21:12:27 vapier Exp $ |
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|
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# @ECLASS: toolchain-funcs.eclass |
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# @MAINTAINER: |
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# Toolchain Ninjas <toolchain@gentoo.org> |
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# @BLURB: functions to query common info about the toolchain |
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# @DESCRIPTION: |
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# 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}") |
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[[ -z ${search} && -n ${!tuple} ]] && search=$(type -p "${!tuple}-${prog}") |
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[[ -n ${search} ]] && prog=${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() { _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"; } |
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tc-getPROG() { _tc-getPROG CHOST "$@"; } |
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|
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# @FUNCTION: tc-getAR |
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# @USAGE: [toolchain prefix] |
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# @RETURN: name of the archiver |
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tc-getAR() { tc-getPROG AR ar "$@"; } |
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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 cpp "$@"; } |
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# @FUNCTION: tc-getCXX |
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# @USAGE: [toolchain prefix] |
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# @RETURN: name of the C++ compiler |
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tc-getCXX() { tc-getPROG CXX g++ "$@"; } |
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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 "$@"; } |
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# @FUNCTION: tc-getSTRIP |
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# @USAGE: [toolchain prefix] |
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# @RETURN: name of the strip program |
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tc-getSTRIP() { tc-getPROG STRIP strip "$@"; } |
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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 "$@"; } |
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# @FUNCTION: tc-getRANLIB |
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# @USAGE: [toolchain prefix] |
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# @RETURN: name of the archiver indexer |
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tc-getRANLIB() { tc-getPROG RANLIB ranlib "$@"; } |
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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 "$@"; } |
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# @FUNCTION: tc-getPKG_CONFIG |
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# @USAGE: [toolchain prefix] |
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# @RETURN: name of the pkg-config tool |
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tc-getPKG_CONFIG() { tc-getPROG PKG_CONFIG pkg-config "$@"; } |
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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 "$@"; } |
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# @FUNCTION: tc-getBUILD_CPP |
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# @USAGE: [toolchain prefix] |
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# @RETURN: name of the C preprocessor for building binaries to run on the build machine |
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tc-getBUILD_CPP() { tc-getBUILD_PROG CPP cpp "$@"; } |
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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_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 archiver indexer for building binaries to run on the build machine |
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tc-getBUILD_RANLIB() { tc-getBUILD_PROG RANLIB ranlib "$@"; } |
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# @FUNCTION: tc-getBUILD_OBJCOPY |
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# @USAGE: [toolchain prefix] |
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# @RETURN: name of the object copier for building binaries to run on the build machine |
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tc-getBUILD_OBJCOPY() { tc-getBUILD_PROG OBJCOPY objcopy "$@"; } |
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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 "$@"; } |
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|
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# @FUNCTION: tc-export |
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# @USAGE: <list of toolchain variables> |
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# @DESCRIPTION: |
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# Quick way to export a bunch of compiler vars at once. |
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tc-export() { |
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local var |
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for var in "$@" ; do |
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[[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'" |
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eval tc-get${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}} != ${CHOST} ]] |
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} |
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|
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# @FUNCTION: tc-is-softfloat |
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# @DESCRIPTION: |
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# See if this toolchain is a softfloat based one. |
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# @CODE |
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# The possible return values: |
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# - only: the target is always softfloat (never had fpu) |
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# - yes: the target should support softfloat |
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# - softfp: (arm specific) the target should use hardfloat insns, but softfloat calling convention |
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# - no: the target doesn't support softfloat |
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# @CODE |
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# This allows us to react differently where packages accept |
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# softfloat flags in the case where support is optional, but |
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# rejects softfloat flags where the target always lacks an fpu. |
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tc-is-softfloat() { |
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local CTARGET=${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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*) |
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if [[ ${CTARGET//_/-} == *-softfloat-* ]] ; then |
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echo "yes" |
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elif [[ ${CTARGET//_/-} == *-softfp-* ]] ; then |
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echo "softfp" |
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else |
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echo "no" |
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fi |
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;; |
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esac |
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} |
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|
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# @FUNCTION: tc-is-static-only |
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# @DESCRIPTION: |
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# Return shell true if the target does not support shared libs, shell false |
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# otherwise. |
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tc-is-static-only() { |
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local host=${CTARGET:-${CHOST}} |
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|
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# *MiNT doesn't have shared libraries, only platform so far |
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[[ ${host} == *-mint* ]] |
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} |
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|
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# @FUNCTION: tc-export_build_env |
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# @USAGE: [compiler variables] |
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# @DESCRIPTION: |
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# Export common build related compiler settings. |
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tc-export_build_env() { |
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tc-export "$@" |
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# Some build envs will initialize vars like: |
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# : ${BUILD_LDFLAGS:-${LDFLAGS}} |
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# So make sure all variables are non-empty. #526734 |
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: ${BUILD_CFLAGS:=-O1 -pipe} |
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: ${BUILD_CXXFLAGS:=-O1 -pipe} |
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: ${BUILD_CPPFLAGS:= } |
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: ${BUILD_LDFLAGS:= } |
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export BUILD_{C,CXX,CPP,LD}FLAGS |
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|
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# Some packages use XXX_FOR_BUILD. |
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local v |
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for v in BUILD_{C,CXX,CPP,LD}FLAGS ; do |
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export ${v#BUILD_}_FOR_BUILD="${!v}" |
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done |
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} |
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|
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# @FUNCTION: tc-env_build |
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# @USAGE: <command> [command args] |
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# @INTERNAL |
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# @DESCRIPTION: |
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# Setup the compile environment to the build tools and then execute the |
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# specified command. We use tc-getBUILD_XX here so that we work with |
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# all of the semi-[non-]standard env vars like $BUILD_CC which often |
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# the target build system does not check. |
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tc-env_build() { |
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tc-export_build_env |
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CFLAGS=${BUILD_CFLAGS} \ |
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CXXFLAGS=${BUILD_CXXFLAGS} \ |
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CPPFLAGS=${BUILD_CPPFLAGS} \ |
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LDFLAGS=${BUILD_LDFLAGS} \ |
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AR=$(tc-getBUILD_AR) \ |
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AS=$(tc-getBUILD_AS) \ |
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CC=$(tc-getBUILD_CC) \ |
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CPP=$(tc-getBUILD_CPP) \ |
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CXX=$(tc-getBUILD_CXX) \ |
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LD=$(tc-getBUILD_LD) \ |
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NM=$(tc-getBUILD_NM) \ |
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PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) \ |
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RANLIB=$(tc-getBUILD_RANLIB) \ |
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"$@" |
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} |
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|
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# @FUNCTION: econf_build |
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# @USAGE: [econf flags] |
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# @DESCRIPTION: |
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# Sometimes we need to locally build up some tools to run on CBUILD because |
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# the package has helper utils which are compiled+executed when compiling. |
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# This won't work when cross-compiling as the CHOST is set to a target which |
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# we cannot natively execute. |
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# |
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# For example, the python package will build up a local python binary using |
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# a portable build system (configure+make), but then use that binary to run |
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# local python scripts to build up other components of the overall python. |
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# We cannot rely on the python binary in $PATH as that often times will be |
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# a different version, or not even installed in the first place. Instead, |
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# we compile the code in a different directory to run on CBUILD, and then |
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# use that binary when compiling the main package to run on CHOST. |
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# |
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# For example, with newer EAPIs, you'd do something like: |
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# @CODE |
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# src_configure() { |
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# ECONF_SOURCE=${S} |
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# if tc-is-cross-compiler ; then |
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# mkdir "${WORKDIR}"/${CBUILD} |
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# pushd "${WORKDIR}"/${CBUILD} >/dev/null |
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# econf_build --disable-some-unused-stuff |
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# popd >/dev/null |
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# fi |
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# ... normal build paths ... |
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# } |
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# src_compile() { |
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# if tc-is-cross-compiler ; then |
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# pushd "${WORKDIR}"/${CBUILD} >/dev/null |
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# emake one-or-two-build-tools |
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# ln/mv build-tools to normal build paths in ${S}/ |
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# popd >/dev/null |
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# fi |
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# ... normal build paths ... |
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# } |
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# @CODE |
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econf_build() { |
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local CBUILD=${CBUILD:-${CHOST}} |
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tc-env_build econf --build=${CBUILD} --host=${CBUILD} "$@" |
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} |
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|
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# @FUNCTION: tc-ld-is-gold |
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# @USAGE: [toolchain prefix] |
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# @DESCRIPTION: |
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# Return true if the current linker is set to gold. |
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tc-ld-is-gold() { |
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local out |
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|
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# First check the linker directly. |
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out=$($(tc-getLD "$@") --version 2>&1) |
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if [[ ${out} == *"GNU gold"* ]] ; then |
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return 0 |
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fi |
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|
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# Then see if they're selecting gold via compiler flags. |
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# Note: We're assuming they're using LDFLAGS to hold the |
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# options and not CFLAGS/CXXFLAGS. |
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local base="${T}/test-tc-gold" |
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cat <<-EOF > "${base}.c" |
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int main() { return 0; } |
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EOF |
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out=$($(tc-getCC "$@") ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} -Wl,--version "${base}.c" -o "${base}" 2>&1) |
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rm -f "${base}"* |
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if [[ ${out} == *"GNU gold"* ]] ; then |
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return 0 |
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fi |
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|
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# No gold here! |
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return 1 |
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} |
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|
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# @FUNCTION: tc-ld-disable-gold |
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# @USAGE: [toolchain prefix] |
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# @DESCRIPTION: |
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# If the gold linker is currently selected, configure the compilation |
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# settings so that we use the older bfd linker instead. |
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tc-ld-disable-gold() { |
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if ! tc-ld-is-gold "$@" ; then |
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# They aren't using gold, so nothing to do! |
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return |
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fi |
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|
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ewarn "Forcing usage of the BFD linker instead of GOLD" |
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|
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# Set up LD to point directly to bfd if it's available. |
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local bfd_ld="$(tc-getLD "$@").bfd" |
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local path_ld=$(which "${bfd_ld}" 2>/dev/null) |
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[[ -e ${path_ld} ]] && export LD=${bfd_ld} |
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|
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# Set up LDFLAGS to select gold based on the gcc version. |
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local major=$(gcc-major-version "$@") |
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local minor=$(gcc-minor-version "$@") |
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if [[ ${major} -lt 4 ]] || [[ ${major} -eq 4 && ${minor} -lt 8 ]] ; then |
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# <=gcc-4.7 requires some coercion. Only works if bfd exists. |
364 |
if [[ -e ${path_ld} ]] ; then |
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local d="${T}/bfd-linker" |
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mkdir -p "${d}" |
367 |
ln -sf "${path_ld}" "${d}"/ld |
368 |
export LDFLAGS="${LDFLAGS} -B${d}" |
369 |
else |
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die "unable to locate a BFD linker to bypass gold" |
371 |
fi |
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else |
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# gcc-4.8+ supports -fuse-ld directly. |
374 |
export LDFLAGS="${LDFLAGS} -fuse-ld=bfd" |
375 |
fi |
376 |
} |
377 |
|
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# @FUNCTION: tc-has-openmp |
379 |
# @USAGE: [toolchain prefix] |
380 |
# @DESCRIPTION: |
381 |
# See if the toolchain supports OpenMP. |
382 |
tc-has-openmp() { |
383 |
local base="${T}/test-tc-openmp" |
384 |
cat <<-EOF > "${base}.c" |
385 |
#include <omp.h> |
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int main() { |
387 |
int nthreads, tid, ret = 0; |
388 |
#pragma omp parallel private(nthreads, tid) |
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{ |
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tid = omp_get_thread_num(); |
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nthreads = omp_get_num_threads(); ret += tid + nthreads; |
392 |
} |
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return ret; |
394 |
} |
395 |
EOF |
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$(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null |
397 |
local ret=$? |
398 |
rm -f "${base}"* |
399 |
return ${ret} |
400 |
} |
401 |
|
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# @FUNCTION: tc-has-tls |
403 |
# @USAGE: [-s|-c|-l] [toolchain prefix] |
404 |
# @DESCRIPTION: |
405 |
# See if the toolchain supports thread local storage (TLS). Use -s to test the |
406 |
# compiler, -c to also test the assembler, and -l to also test the C library |
407 |
# (the default). |
408 |
tc-has-tls() { |
409 |
local base="${T}/test-tc-tls" |
410 |
cat <<-EOF > "${base}.c" |
411 |
int foo(int *i) { |
412 |
static __thread int j = 0; |
413 |
return *i ? j : *i; |
414 |
} |
415 |
EOF |
416 |
local flags |
417 |
case $1 in |
418 |
-s) flags="-S";; |
419 |
-c) flags="-c";; |
420 |
-l) ;; |
421 |
-*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";; |
422 |
esac |
423 |
: ${flags:=-fPIC -shared -Wl,-z,defs} |
424 |
[[ $1 == -* ]] && shift |
425 |
$(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null |
426 |
local ret=$? |
427 |
rm -f "${base}"* |
428 |
return ${ret} |
429 |
} |
430 |
|
431 |
|
432 |
# Parse information from CBUILD/CHOST/CTARGET rather than |
433 |
# use external variables from the profile. |
434 |
tc-ninja_magic_to_arch() { |
435 |
ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } |
436 |
|
437 |
local type=$1 |
438 |
local host=$2 |
439 |
[[ -z ${host} ]] && host=${CTARGET:-${CHOST}} |
440 |
|
441 |
local KV=${KV:-${KV_FULL}} |
442 |
[[ ${type} == "kern" ]] && [[ -z ${KV} ]] && \ |
443 |
ewarn "QA: Kernel version could not be determined, please inherit kernel-2 or linux-info" |
444 |
|
445 |
case ${host} in |
446 |
aarch64*) echo arm64;; |
447 |
alpha*) echo alpha;; |
448 |
arm*) echo arm;; |
449 |
avr*) ninj avr32 avr;; |
450 |
bfin*) ninj blackfin bfin;; |
451 |
c6x*) echo c6x;; |
452 |
cris*) echo cris;; |
453 |
frv*) echo frv;; |
454 |
hexagon*) echo hexagon;; |
455 |
hppa*) ninj parisc hppa;; |
456 |
i?86*) |
457 |
# Starting with linux-2.6.24, the 'x86_64' and 'i386' |
458 |
# trees have been unified into 'x86'. |
459 |
# FreeBSD still uses i386 |
460 |
if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then |
461 |
echo i386 |
462 |
else |
463 |
echo x86 |
464 |
fi |
465 |
;; |
466 |
ia64*) echo ia64;; |
467 |
m68*) echo m68k;; |
468 |
metag*) echo metag;; |
469 |
microblaze*) echo microblaze;; |
470 |
mips*) echo mips;; |
471 |
nios2*) echo nios2;; |
472 |
nios*) echo nios;; |
473 |
or32*) echo openrisc;; |
474 |
powerpc*) |
475 |
# Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees |
476 |
# have been unified into simply 'powerpc', but until 2.6.16, |
477 |
# ppc32 is still using ARCH="ppc" as default |
478 |
if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then |
479 |
echo powerpc |
480 |
elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then |
481 |
if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then |
482 |
echo powerpc |
483 |
else |
484 |
echo ppc |
485 |
fi |
486 |
elif [[ ${host} == powerpc64* ]] ; then |
487 |
echo ppc64 |
488 |
elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then |
489 |
ninj ppc64 ppc |
490 |
else |
491 |
echo ppc |
492 |
fi |
493 |
;; |
494 |
riscv*) echo riscv;; |
495 |
s390*) echo s390;; |
496 |
score*) echo score;; |
497 |
sh64*) ninj sh64 sh;; |
498 |
sh*) echo sh;; |
499 |
sparc64*) ninj sparc64 sparc;; |
500 |
sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ |
501 |
&& ninj sparc64 sparc \ |
502 |
|| echo sparc |
503 |
;; |
504 |
tile*) echo tile;; |
505 |
vax*) echo vax;; |
506 |
x86_64*freebsd*) echo amd64;; |
507 |
x86_64*) |
508 |
# Starting with linux-2.6.24, the 'x86_64' and 'i386' |
509 |
# trees have been unified into 'x86'. |
510 |
if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then |
511 |
echo x86 |
512 |
else |
513 |
ninj x86_64 amd64 |
514 |
fi |
515 |
;; |
516 |
xtensa*) echo xtensa;; |
517 |
|
518 |
# since our usage of tc-arch is largely concerned with |
519 |
# normalizing inputs for testing ${CTARGET}, let's filter |
520 |
# other cross targets (mingw and such) into the unknown. |
521 |
*) echo unknown;; |
522 |
esac |
523 |
} |
524 |
# @FUNCTION: tc-arch-kernel |
525 |
# @USAGE: [toolchain prefix] |
526 |
# @RETURN: name of the kernel arch according to the compiler target |
527 |
tc-arch-kernel() { |
528 |
tc-ninja_magic_to_arch kern "$@" |
529 |
} |
530 |
# @FUNCTION: tc-arch |
531 |
# @USAGE: [toolchain prefix] |
532 |
# @RETURN: name of the portage arch according to the compiler target |
533 |
tc-arch() { |
534 |
tc-ninja_magic_to_arch portage "$@" |
535 |
} |
536 |
|
537 |
tc-endian() { |
538 |
local host=$1 |
539 |
[[ -z ${host} ]] && host=${CTARGET:-${CHOST}} |
540 |
host=${host%%-*} |
541 |
|
542 |
case ${host} in |
543 |
aarch64*be) echo big;; |
544 |
aarch64) echo little;; |
545 |
alpha*) echo big;; |
546 |
arm*b*) echo big;; |
547 |
arm*) echo little;; |
548 |
cris*) echo little;; |
549 |
hppa*) echo big;; |
550 |
i?86*) echo little;; |
551 |
ia64*) echo little;; |
552 |
m68*) echo big;; |
553 |
mips*l*) echo little;; |
554 |
mips*) echo big;; |
555 |
powerpc*le) echo little;; |
556 |
powerpc*) echo big;; |
557 |
s390*) echo big;; |
558 |
sh*b*) echo big;; |
559 |
sh*) echo little;; |
560 |
sparc*) echo big;; |
561 |
x86_64*) echo little;; |
562 |
*) echo wtf;; |
563 |
esac |
564 |
} |
565 |
|
566 |
# Internal func. The first argument is the version info to expand. |
567 |
# Query the preprocessor to improve compatibility across different |
568 |
# compilers rather than maintaining a --version flag matrix. #335943 |
569 |
_gcc_fullversion() { |
570 |
local ver="$1"; shift |
571 |
set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"` |
572 |
eval echo "$ver" |
573 |
} |
574 |
|
575 |
# @FUNCTION: gcc-fullversion |
576 |
# @RETURN: compiler version (major.minor.micro: [3.4.6]) |
577 |
gcc-fullversion() { |
578 |
_gcc_fullversion '$1.$2.$3' "$@" |
579 |
} |
580 |
# @FUNCTION: gcc-version |
581 |
# @RETURN: compiler version (major.minor: [3.4].6) |
582 |
gcc-version() { |
583 |
_gcc_fullversion '$1.$2' "$@" |
584 |
} |
585 |
# @FUNCTION: gcc-major-version |
586 |
# @RETURN: major compiler version (major: [3].4.6) |
587 |
gcc-major-version() { |
588 |
_gcc_fullversion '$1' "$@" |
589 |
} |
590 |
# @FUNCTION: gcc-minor-version |
591 |
# @RETURN: minor compiler version (minor: 3.[4].6) |
592 |
gcc-minor-version() { |
593 |
_gcc_fullversion '$2' "$@" |
594 |
} |
595 |
# @FUNCTION: gcc-micro-version |
596 |
# @RETURN: micro compiler version (micro: 3.4.[6]) |
597 |
gcc-micro-version() { |
598 |
_gcc_fullversion '$3' "$@" |
599 |
} |
600 |
|
601 |
# Returns the installation directory - internal toolchain |
602 |
# function for use by _gcc-specs-exists (for flag-o-matic). |
603 |
_gcc-install-dir() { |
604 |
echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\ |
605 |
awk '$1=="install:" {print $2}')" |
606 |
} |
607 |
# Returns true if the indicated specs file exists - internal toolchain |
608 |
# function for use by flag-o-matic. |
609 |
_gcc-specs-exists() { |
610 |
[[ -f $(_gcc-install-dir)/$1 ]] |
611 |
} |
612 |
|
613 |
# Returns requested gcc specs directive unprocessed - for used by |
614 |
# gcc-specs-directive() |
615 |
# Note; later specs normally overwrite earlier ones; however if a later |
616 |
# spec starts with '+' then it appends. |
617 |
# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v" |
618 |
# as "Reading <file>", in order. Strictly speaking, if there's a |
619 |
# $(gcc_install_dir)/specs, the built-in specs aren't read, however by |
620 |
# the same token anything from 'gcc -dumpspecs' is overridden by |
621 |
# the contents of $(gcc_install_dir)/specs so the result is the |
622 |
# same either way. |
623 |
_gcc-specs-directive_raw() { |
624 |
local cc=$(tc-getCC) |
625 |
local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}') |
626 |
${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ |
627 |
'BEGIN { pspec=""; spec=""; outside=1 } |
628 |
$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } |
629 |
outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next } |
630 |
spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next } |
631 |
{ spec=spec $0 } |
632 |
END { print spec }' |
633 |
return 0 |
634 |
} |
635 |
|
636 |
# Return the requested gcc specs directive, with all included |
637 |
# specs expanded. |
638 |
# Note, it does not check for inclusion loops, which cause it |
639 |
# to never finish - but such loops are invalid for gcc and we're |
640 |
# assuming gcc is operational. |
641 |
gcc-specs-directive() { |
642 |
local directive subdname subdirective |
643 |
directive="$(_gcc-specs-directive_raw $1)" |
644 |
while [[ ${directive} == *%\(*\)* ]]; do |
645 |
subdname=${directive/*%\(} |
646 |
subdname=${subdname/\)*} |
647 |
subdirective="$(_gcc-specs-directive_raw ${subdname})" |
648 |
directive="${directive//\%(${subdname})/${subdirective}}" |
649 |
done |
650 |
echo "${directive}" |
651 |
return 0 |
652 |
} |
653 |
|
654 |
# Returns true if gcc sets relro |
655 |
gcc-specs-relro() { |
656 |
local directive |
657 |
directive=$(gcc-specs-directive link_command) |
658 |
[[ "${directive/\{!norelro:}" != "${directive}" ]] |
659 |
} |
660 |
# Returns true if gcc sets now |
661 |
gcc-specs-now() { |
662 |
local directive |
663 |
directive=$(gcc-specs-directive link_command) |
664 |
[[ "${directive/\{!nonow:}" != "${directive}" ]] |
665 |
} |
666 |
# Returns true if gcc builds PIEs |
667 |
gcc-specs-pie() { |
668 |
local directive |
669 |
directive=$(gcc-specs-directive cc1) |
670 |
[[ "${directive/\{!nopie:}" != "${directive}" ]] |
671 |
} |
672 |
# Returns true if gcc builds with the stack protector |
673 |
gcc-specs-ssp() { |
674 |
local directive |
675 |
directive=$(gcc-specs-directive cc1) |
676 |
[[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]] |
677 |
} |
678 |
# Returns true if gcc upgrades fstack-protector to fstack-protector-all |
679 |
gcc-specs-ssp-to-all() { |
680 |
local directive |
681 |
directive=$(gcc-specs-directive cc1) |
682 |
[[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]] |
683 |
} |
684 |
# Returns true if gcc builds with fno-strict-overflow |
685 |
gcc-specs-nostrict() { |
686 |
local directive |
687 |
directive=$(gcc-specs-directive cc1) |
688 |
[[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]] |
689 |
} |
690 |
# Returns true if gcc builds with fstack-check |
691 |
gcc-specs-stack-check() { |
692 |
local directive |
693 |
directive=$(gcc-specs-directive cc1) |
694 |
[[ "${directive/\{!fno-stack-check:}" != "${directive}" ]] |
695 |
} |
696 |
|
697 |
|
698 |
# @FUNCTION: gen_usr_ldscript |
699 |
# @USAGE: [-a] <list of libs to create linker scripts for> |
700 |
# @DESCRIPTION: |
701 |
# This function generate linker scripts in /usr/lib for dynamic |
702 |
# libs in /lib. This is to fix linking problems when you have |
703 |
# the .so in /lib, and the .a in /usr/lib. What happens is that |
704 |
# in some cases when linking dynamic, the .a in /usr/lib is used |
705 |
# instead of the .so in /lib due to gcc/libtool tweaking ld's |
706 |
# library search path. This causes many builds to fail. |
707 |
# See bug #4411 for more info. |
708 |
# |
709 |
# Note that you should in general use the unversioned name of |
710 |
# the library (libfoo.so), as ldconfig should usually update it |
711 |
# correctly to point to the latest version of the library present. |
712 |
gen_usr_ldscript() { |
713 |
local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname) |
714 |
[[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/ |
715 |
|
716 |
tc-is-static-only && return |
717 |
|
718 |
# Eventually we'd like to get rid of this func completely #417451 |
719 |
case ${CTARGET:-${CHOST}} in |
720 |
*-darwin*) ;; |
721 |
*linux*|*-freebsd*|*-openbsd*|*-netbsd*) |
722 |
use prefix && return 0 ;; |
723 |
*) return 0 ;; |
724 |
esac |
725 |
|
726 |
# Just make sure it exists |
727 |
dodir /usr/${libdir} |
728 |
|
729 |
if [[ $1 == "-a" ]] ; then |
730 |
auto=true |
731 |
shift |
732 |
dodir /${libdir} |
733 |
fi |
734 |
|
735 |
# OUTPUT_FORMAT gives hints to the linker as to what binary format |
736 |
# is referenced ... makes multilib saner |
737 |
local flags=( ${CFLAGS} ${LDFLAGS} -Wl,--verbose ) |
738 |
if $(tc-getLD) --version | grep -q 'GNU gold' ; then |
739 |
# If they're using gold, manually invoke the old bfd. #487696 |
740 |
local d="${T}/bfd-linker" |
741 |
mkdir -p "${d}" |
742 |
ln -sf $(which ${CHOST}-ld.bfd) "${d}"/ld |
743 |
flags+=( -B"${d}" ) |
744 |
fi |
745 |
output_format=$($(tc-getCC) "${flags[@]}" 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') |
746 |
[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" |
747 |
|
748 |
for lib in "$@" ; do |
749 |
local tlib |
750 |
if ${auto} ; then |
751 |
lib="lib${lib}${suffix}" |
752 |
else |
753 |
# Ensure /lib/${lib} exists to avoid dangling scripts/symlinks. |
754 |
# This especially is for AIX where $(get_libname) can return ".a", |
755 |
# so /lib/${lib} might be moved to /usr/lib/${lib} (by accident). |
756 |
[[ -r ${ED}/${libdir}/${lib} ]] || continue |
757 |
#TODO: better die here? |
758 |
fi |
759 |
|
760 |
case ${CTARGET:-${CHOST}} in |
761 |
*-darwin*) |
762 |
if ${auto} ; then |
763 |
tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib}) |
764 |
else |
765 |
tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib}) |
766 |
fi |
767 |
[[ -z ${tlib} ]] && die "unable to read install_name from ${lib}" |
768 |
tlib=${tlib##*/} |
769 |
|
770 |
if ${auto} ; then |
771 |
mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die |
772 |
# some install_names are funky: they encode a version |
773 |
if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then |
774 |
mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die |
775 |
fi |
776 |
rm -f "${ED}"/${libdir}/${lib} |
777 |
fi |
778 |
|
779 |
# Mach-O files have an id, which is like a soname, it tells how |
780 |
# another object linking against this lib should reference it. |
781 |
# Since we moved the lib from usr/lib into lib this reference is |
782 |
# wrong. Hence, we update it here. We don't configure with |
783 |
# libdir=/lib because that messes up libtool files. |
784 |
# Make sure we don't lose the specific version, so just modify the |
785 |
# existing install_name |
786 |
if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then |
787 |
chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it |
788 |
local nowrite=yes |
789 |
fi |
790 |
install_name_tool \ |
791 |
-id "${EPREFIX}"/${libdir}/${tlib} \ |
792 |
"${ED}"/${libdir}/${tlib} || die "install_name_tool failed" |
793 |
[[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}" |
794 |
# Now as we don't use GNU binutils and our linker doesn't |
795 |
# understand linker scripts, just create a symlink. |
796 |
pushd "${ED}/usr/${libdir}" > /dev/null |
797 |
ln -snf "../../${libdir}/${tlib}" "${lib}" |
798 |
popd > /dev/null |
799 |
;; |
800 |
*) |
801 |
if ${auto} ; then |
802 |
tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib}) |
803 |
[[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}" |
804 |
mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die |
805 |
# some SONAMEs are funky: they encode a version before the .so |
806 |
if [[ ${tlib} != ${lib}* ]] ; then |
807 |
mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die |
808 |
fi |
809 |
rm -f "${ED}"/${libdir}/${lib} |
810 |
else |
811 |
tlib=${lib} |
812 |
fi |
813 |
cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT |
814 |
/* GNU ld script |
815 |
Since Gentoo has critical dynamic libraries in /lib, and the static versions |
816 |
in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we |
817 |
run into linking problems. This "fake" dynamic lib is a linker script that |
818 |
redirects the linker to the real lib. And yes, this works in the cross- |
819 |
compiling scenario as the sysroot-ed linker will prepend the real path. |
820 |
|
821 |
See bug http://bugs.gentoo.org/4411 for more info. |
822 |
*/ |
823 |
${output_format} |
824 |
GROUP ( ${EPREFIX}/${libdir}/${tlib} ) |
825 |
END_LDSCRIPT |
826 |
;; |
827 |
esac |
828 |
fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" |
829 |
done |
830 |
} |
831 |
|
832 |
fi |