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# Copyright 1999-2011 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 1.109 2011/12/10 19:45:00 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 [[ ${___ECLASS_ONCE_TOOLCHAIN_FUNCS} != "recur -_+^+_- spank" ]] ; then |
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___ECLASS_ONCE_TOOLCHAIN_FUNCS="recur -_+^+_- spank" |
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|
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inherit multilib |
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|
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DESCRIPTION="Based on the ${ECLASS} eclass" |
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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 "$@"; } |
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# @FUNCTION: tc-getF77 |
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# @USAGE: [toolchain prefix] |
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# @RETURN: name of the Fortran 77 compiler |
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tc-getF77() { tc-getPROG F77 gfortran "$@"; } |
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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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return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]]) |
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} |
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|
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# @FUNCTION: tc-is-softfloat |
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# @DESCRIPTION: |
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# See if this toolchain is a softfloat based one. |
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# @CODE |
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# The possible return values: |
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# - only: the target is always softfloat (never had fpu) |
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# - yes: the target should support softfloat |
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# - no: the target doesn't support softfloat |
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# @CODE |
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# This allows us to react differently where packages accept |
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# softfloat flags in the case where support is optional, but |
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# rejects softfloat flags where the target always lacks an fpu. |
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tc-is-softfloat() { |
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local CTARGET=${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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[[ ${CTARGET//_/-} == *-softfloat-* ]] \ |
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&& echo "yes" \ |
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|| echo "no" |
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;; |
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esac |
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} |
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|
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# @FUNCTION: tc-is-hardfloat |
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# @DESCRIPTION: |
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# See if this toolchain is a hardfloat based one. |
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# @CODE |
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# The possible return values: |
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# - yes: the target should support hardfloat |
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# - no: the target doesn't support hardfloat |
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tc-is-hardfloat() { |
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[[ ${CTARGET//_/-} == *-hardfloat-* ]] \ |
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&& echo "yes" \ |
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|| echo "no" |
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} |
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|
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# @FUNCTION: tc-is-static-only |
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# @DESCRIPTION: |
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# Return shell true if the target does not support shared libs, shell false |
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# otherwise. |
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tc-is-static-only() { |
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local host=${CTARGET:-${CHOST}} |
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|
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# *MiNT doesn't have shared libraries, only platform so far |
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return $([[ ${host} == *-mint* ]]) |
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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 $BUILD_CC which often |
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# the target build system does not check. |
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tc-env_build() { |
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CFLAGS=${BUILD_CFLAGS:--O1 -pipe} \ |
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CXXFLAGS=${BUILD_CXXFLAGS:--O1 -pipe} \ |
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CPPFLAGS=${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 ${S}/ |
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# popd >/dev/null |
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# fi |
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# ... normal build paths ... |
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# } |
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# @CODE |
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econf_build() { |
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tc-env_build econf --build=${CBUILD:-${CHOST}} "$@" |
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} |
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|
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# @FUNCTION: tc-has-openmp |
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# @USAGE: [toolchain prefix] |
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# @DESCRIPTION: |
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# See if the toolchain supports OpenMP. |
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tc-has-openmp() { |
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local base="${T}/test-tc-openmp" |
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cat <<-EOF > "${base}.c" |
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#include <omp.h> |
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int main() { |
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int nthreads, tid, ret = 0; |
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#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; |
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} |
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return ret; |
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} |
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EOF |
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$(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" >&/dev/null |
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local ret=$? |
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rm -f "${base}"* |
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return ${ret} |
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} |
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|
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# @FUNCTION: tc-has-tls |
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# @USAGE: [-s|-c|-l] [toolchain prefix] |
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# @DESCRIPTION: |
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# See if the toolchain supports thread local storage (TLS). Use -s to test the |
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# compiler, -c to also test the assembler, and -l to also test the C library |
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# (the default). |
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tc-has-tls() { |
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local base="${T}/test-tc-tls" |
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cat <<-EOF > "${base}.c" |
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int foo(int *i) { |
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static __thread int j = 0; |
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return *i ? j : *i; |
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} |
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EOF |
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local flags |
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case $1 in |
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-s) flags="-S";; |
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-c) flags="-c";; |
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-l) ;; |
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-*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";; |
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esac |
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: ${flags:=-fPIC -shared -Wl,-z,defs} |
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[[ $1 == -* ]] && shift |
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$(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null |
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local ret=$? |
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rm -f "${base}"* |
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return ${ret} |
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} |
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|
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|
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# Parse information from CBUILD/CHOST/CTARGET rather than |
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# use external variables from the profile. |
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tc-ninja_magic_to_arch() { |
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ninj() { [[ ${type} == "kern" ]] && echo $1 || echo $2 ; } |
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|
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local type=$1 |
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local host=$2 |
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[[ -z ${host} ]] && host=${CTARGET:-${CHOST}} |
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|
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case ${host} in |
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alpha*) echo alpha;; |
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arm*) echo arm;; |
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avr*) ninj avr32 avr;; |
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bfin*) ninj blackfin bfin;; |
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cris*) echo cris;; |
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hppa*) ninj parisc hppa;; |
| 363 |
i?86*) |
| 364 |
# Starting with linux-2.6.24, the 'x86_64' and 'i386' |
| 365 |
# trees have been unified into 'x86'. |
| 366 |
# FreeBSD still uses i386 |
| 367 |
if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]] ; then |
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echo i386 |
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else |
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echo x86 |
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fi |
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;; |
| 373 |
ia64*) echo ia64;; |
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m68*) echo m68k;; |
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mips*) echo mips;; |
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nios2*) echo nios2;; |
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nios*) echo nios;; |
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powerpc*) |
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# Starting with linux-2.6.15, the 'ppc' and 'ppc64' trees |
| 380 |
# have been unified into simply 'powerpc', but until 2.6.16, |
| 381 |
# ppc32 is still using ARCH="ppc" as default |
| 382 |
if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] ; then |
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echo powerpc |
| 384 |
elif [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] ; then |
| 385 |
if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then |
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echo powerpc |
| 387 |
else |
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echo ppc |
| 389 |
fi |
| 390 |
elif [[ ${host} == powerpc64* ]] ; then |
| 391 |
echo ppc64 |
| 392 |
elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then |
| 393 |
ninj ppc64 ppc |
| 394 |
else |
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echo ppc |
| 396 |
fi |
| 397 |
;; |
| 398 |
s390*) echo s390;; |
| 399 |
sh64*) ninj sh64 sh;; |
| 400 |
sh*) echo sh;; |
| 401 |
sparc64*) ninj sparc64 sparc;; |
| 402 |
sparc*) [[ ${PROFILE_ARCH} == "sparc64" ]] \ |
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&& ninj sparc64 sparc \ |
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|| echo sparc |
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;; |
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vax*) echo vax;; |
| 407 |
x86_64*freebsd*) echo amd64;; |
| 408 |
x86_64*) |
| 409 |
# Starting with linux-2.6.24, the 'x86_64' and 'i386' |
| 410 |
# trees have been unified into 'x86'. |
| 411 |
if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]] ; then |
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echo x86 |
| 413 |
else |
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ninj x86_64 amd64 |
| 415 |
fi |
| 416 |
;; |
| 417 |
|
| 418 |
# since our usage of tc-arch is largely concerned with |
| 419 |
# normalizing inputs for testing ${CTARGET}, let's filter |
| 420 |
# other cross targets (mingw and such) into the unknown. |
| 421 |
*) echo unknown;; |
| 422 |
esac |
| 423 |
} |
| 424 |
# @FUNCTION: tc-arch-kernel |
| 425 |
# @USAGE: [toolchain prefix] |
| 426 |
# @RETURN: name of the kernel arch according to the compiler target |
| 427 |
tc-arch-kernel() { |
| 428 |
tc-ninja_magic_to_arch kern "$@" |
| 429 |
} |
| 430 |
# @FUNCTION: tc-arch |
| 431 |
# @USAGE: [toolchain prefix] |
| 432 |
# @RETURN: name of the portage arch according to the compiler target |
| 433 |
tc-arch() { |
| 434 |
tc-ninja_magic_to_arch portage "$@" |
| 435 |
} |
| 436 |
|
| 437 |
tc-endian() { |
| 438 |
local host=$1 |
| 439 |
[[ -z ${host} ]] && host=${CTARGET:-${CHOST}} |
| 440 |
host=${host%%-*} |
| 441 |
|
| 442 |
case ${host} in |
| 443 |
alpha*) echo big;; |
| 444 |
arm*b*) echo big;; |
| 445 |
arm*) echo little;; |
| 446 |
cris*) echo little;; |
| 447 |
hppa*) echo big;; |
| 448 |
i?86*) echo little;; |
| 449 |
ia64*) echo little;; |
| 450 |
m68*) echo big;; |
| 451 |
mips*l*) echo little;; |
| 452 |
mips*) echo big;; |
| 453 |
powerpc*) echo big;; |
| 454 |
s390*) echo big;; |
| 455 |
sh*b*) echo big;; |
| 456 |
sh*) echo little;; |
| 457 |
sparc*) echo big;; |
| 458 |
x86_64*) echo little;; |
| 459 |
*) echo wtf;; |
| 460 |
esac |
| 461 |
} |
| 462 |
|
| 463 |
# Internal func. The first argument is the version info to expand. |
| 464 |
# Query the preprocessor to improve compatibility across different |
| 465 |
# compilers rather than maintaining a --version flag matrix. #335943 |
| 466 |
_gcc_fullversion() { |
| 467 |
local ver="$1"; shift |
| 468 |
set -- `$(tc-getCPP "$@") -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__"` |
| 469 |
eval echo "$ver" |
| 470 |
} |
| 471 |
|
| 472 |
# @FUNCTION: gcc-fullversion |
| 473 |
# @RETURN: compiler version (major.minor.micro: [3.4.6]) |
| 474 |
gcc-fullversion() { |
| 475 |
_gcc_fullversion '$1.$2.$3' "$@" |
| 476 |
} |
| 477 |
# @FUNCTION: gcc-version |
| 478 |
# @RETURN: compiler version (major.minor: [3.4].6) |
| 479 |
gcc-version() { |
| 480 |
_gcc_fullversion '$1.$2' "$@" |
| 481 |
} |
| 482 |
# @FUNCTION: gcc-major-version |
| 483 |
# @RETURN: major compiler version (major: [3].4.6) |
| 484 |
gcc-major-version() { |
| 485 |
_gcc_fullversion '$1' "$@" |
| 486 |
} |
| 487 |
# @FUNCTION: gcc-minor-version |
| 488 |
# @RETURN: minor compiler version (minor: 3.[4].6) |
| 489 |
gcc-minor-version() { |
| 490 |
_gcc_fullversion '$2' "$@" |
| 491 |
} |
| 492 |
# @FUNCTION: gcc-micro-version |
| 493 |
# @RETURN: micro compiler version (micro: 3.4.[6]) |
| 494 |
gcc-micro-version() { |
| 495 |
_gcc_fullversion '$3' "$@" |
| 496 |
} |
| 497 |
|
| 498 |
# Returns the installation directory - internal toolchain |
| 499 |
# function for use by _gcc-specs-exists (for flag-o-matic). |
| 500 |
_gcc-install-dir() { |
| 501 |
echo "$(LC_ALL=C $(tc-getCC) -print-search-dirs 2> /dev/null |\ |
| 502 |
awk '$1=="install:" {print $2}')" |
| 503 |
} |
| 504 |
# Returns true if the indicated specs file exists - internal toolchain |
| 505 |
# function for use by flag-o-matic. |
| 506 |
_gcc-specs-exists() { |
| 507 |
[[ -f $(_gcc-install-dir)/$1 ]] |
| 508 |
} |
| 509 |
|
| 510 |
# Returns requested gcc specs directive unprocessed - for used by |
| 511 |
# gcc-specs-directive() |
| 512 |
# Note; later specs normally overwrite earlier ones; however if a later |
| 513 |
# spec starts with '+' then it appends. |
| 514 |
# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v" |
| 515 |
# as "Reading <file>", in order. Strictly speaking, if there's a |
| 516 |
# $(gcc_install_dir)/specs, the built-in specs aren't read, however by |
| 517 |
# the same token anything from 'gcc -dumpspecs' is overridden by |
| 518 |
# the contents of $(gcc_install_dir)/specs so the result is the |
| 519 |
# same either way. |
| 520 |
_gcc-specs-directive_raw() { |
| 521 |
local cc=$(tc-getCC) |
| 522 |
local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}') |
| 523 |
${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ |
| 524 |
'BEGIN { pspec=""; spec=""; outside=1 } |
| 525 |
$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } |
| 526 |
outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next } |
| 527 |
spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next } |
| 528 |
{ spec=spec $0 } |
| 529 |
END { print spec }' |
| 530 |
return 0 |
| 531 |
} |
| 532 |
|
| 533 |
# Return the requested gcc specs directive, with all included |
| 534 |
# specs expanded. |
| 535 |
# Note, it does not check for inclusion loops, which cause it |
| 536 |
# to never finish - but such loops are invalid for gcc and we're |
| 537 |
# assuming gcc is operational. |
| 538 |
gcc-specs-directive() { |
| 539 |
local directive subdname subdirective |
| 540 |
directive="$(_gcc-specs-directive_raw $1)" |
| 541 |
while [[ ${directive} == *%\(*\)* ]]; do |
| 542 |
subdname=${directive/*%\(} |
| 543 |
subdname=${subdname/\)*} |
| 544 |
subdirective="$(_gcc-specs-directive_raw ${subdname})" |
| 545 |
directive="${directive//\%(${subdname})/${subdirective}}" |
| 546 |
done |
| 547 |
echo "${directive}" |
| 548 |
return 0 |
| 549 |
} |
| 550 |
|
| 551 |
# Returns true if gcc sets relro |
| 552 |
gcc-specs-relro() { |
| 553 |
local directive |
| 554 |
directive=$(gcc-specs-directive link_command) |
| 555 |
return $([[ "${directive/\{!norelro:}" != "${directive}" ]]) |
| 556 |
} |
| 557 |
# Returns true if gcc sets now |
| 558 |
gcc-specs-now() { |
| 559 |
local directive |
| 560 |
directive=$(gcc-specs-directive link_command) |
| 561 |
return $([[ "${directive/\{!nonow:}" != "${directive}" ]]) |
| 562 |
} |
| 563 |
# Returns true if gcc builds PIEs |
| 564 |
gcc-specs-pie() { |
| 565 |
local directive |
| 566 |
directive=$(gcc-specs-directive cc1) |
| 567 |
return $([[ "${directive/\{!nopie:}" != "${directive}" ]]) |
| 568 |
} |
| 569 |
# Returns true if gcc builds with the stack protector |
| 570 |
gcc-specs-ssp() { |
| 571 |
local directive |
| 572 |
directive=$(gcc-specs-directive cc1) |
| 573 |
return $([[ "${directive/\{!fno-stack-protector:}" != "${directive}" ]]) |
| 574 |
} |
| 575 |
# Returns true if gcc upgrades fstack-protector to fstack-protector-all |
| 576 |
gcc-specs-ssp-to-all() { |
| 577 |
local directive |
| 578 |
directive=$(gcc-specs-directive cc1) |
| 579 |
return $([[ "${directive/\{!fno-stack-protector-all:}" != "${directive}" ]]) |
| 580 |
} |
| 581 |
# Returns true if gcc builds with fno-strict-overflow |
| 582 |
gcc-specs-nostrict() { |
| 583 |
local directive |
| 584 |
directive=$(gcc-specs-directive cc1) |
| 585 |
return $([[ "${directive/\{!fstrict-overflow:}" != "${directive}" ]]) |
| 586 |
} |
| 587 |
|
| 588 |
|
| 589 |
# @FUNCTION: gen_usr_ldscript |
| 590 |
# @USAGE: [-a] <list of libs to create linker scripts for> |
| 591 |
# @DESCRIPTION: |
| 592 |
# This function generate linker scripts in /usr/lib for dynamic |
| 593 |
# libs in /lib. This is to fix linking problems when you have |
| 594 |
# the .so in /lib, and the .a in /usr/lib. What happens is that |
| 595 |
# in some cases when linking dynamic, the .a in /usr/lib is used |
| 596 |
# instead of the .so in /lib due to gcc/libtool tweaking ld's |
| 597 |
# library search path. This causes many builds to fail. |
| 598 |
# See bug #4411 for more info. |
| 599 |
# |
| 600 |
# Note that you should in general use the unversioned name of |
| 601 |
# the library (libfoo.so), as ldconfig should usually update it |
| 602 |
# correctly to point to the latest version of the library present. |
| 603 |
gen_usr_ldscript() { |
| 604 |
local lib libdir=$(get_libdir) output_format="" auto=false suffix=$(get_libname) |
| 605 |
[[ -z ${ED+set} ]] && local ED=${D%/}${EPREFIX}/ |
| 606 |
|
| 607 |
tc-is-static-only && return |
| 608 |
|
| 609 |
# Just make sure it exists |
| 610 |
dodir /usr/${libdir} |
| 611 |
|
| 612 |
if [[ $1 == "-a" ]] ; then |
| 613 |
auto=true |
| 614 |
shift |
| 615 |
dodir /${libdir} |
| 616 |
fi |
| 617 |
|
| 618 |
# OUTPUT_FORMAT gives hints to the linker as to what binary format |
| 619 |
# is referenced ... makes multilib saner |
| 620 |
output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') |
| 621 |
[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" |
| 622 |
|
| 623 |
for lib in "$@" ; do |
| 624 |
local tlib |
| 625 |
if ${auto} ; then |
| 626 |
lib="lib${lib}${suffix}" |
| 627 |
else |
| 628 |
# Ensure /lib/${lib} exists to avoid dangling scripts/symlinks. |
| 629 |
# This especially is for AIX where $(get_libname) can return ".a", |
| 630 |
# so /lib/${lib} might be moved to /usr/lib/${lib} (by accident). |
| 631 |
[[ -r ${ED}/${libdir}/${lib} ]] || continue |
| 632 |
#TODO: better die here? |
| 633 |
fi |
| 634 |
|
| 635 |
case ${CTARGET:-${CHOST}} in |
| 636 |
*-darwin*) |
| 637 |
if ${auto} ; then |
| 638 |
tlib=$(scanmacho -qF'%S#F' "${ED}"/usr/${libdir}/${lib}) |
| 639 |
else |
| 640 |
tlib=$(scanmacho -qF'%S#F' "${ED}"/${libdir}/${lib}) |
| 641 |
fi |
| 642 |
[[ -z ${tlib} ]] && die "unable to read install_name from ${lib}" |
| 643 |
tlib=${tlib##*/} |
| 644 |
|
| 645 |
if ${auto} ; then |
| 646 |
mv "${ED}"/usr/${libdir}/${lib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die |
| 647 |
# some install_names are funky: they encode a version |
| 648 |
if [[ ${tlib} != ${lib%${suffix}}.*${suffix#.} ]] ; then |
| 649 |
mv "${ED}"/usr/${libdir}/${tlib%${suffix}}.*${suffix#.} "${ED}"/${libdir}/ || die |
| 650 |
fi |
| 651 |
rm -f "${ED}"/${libdir}/${lib} |
| 652 |
fi |
| 653 |
|
| 654 |
# Mach-O files have an id, which is like a soname, it tells how |
| 655 |
# another object linking against this lib should reference it. |
| 656 |
# Since we moved the lib from usr/lib into lib this reference is |
| 657 |
# wrong. Hence, we update it here. We don't configure with |
| 658 |
# libdir=/lib because that messes up libtool files. |
| 659 |
# Make sure we don't lose the specific version, so just modify the |
| 660 |
# existing install_name |
| 661 |
if [[ ! -w "${ED}/${libdir}/${tlib}" ]] ; then |
| 662 |
chmod u+w "${ED}${libdir}/${tlib}" # needed to write to it |
| 663 |
local nowrite=yes |
| 664 |
fi |
| 665 |
install_name_tool \ |
| 666 |
-id "${EPREFIX}"/${libdir}/${tlib} \ |
| 667 |
"${ED}"/${libdir}/${tlib} || die "install_name_tool failed" |
| 668 |
[[ -n ${nowrite} ]] && chmod u-w "${ED}${libdir}/${tlib}" |
| 669 |
# Now as we don't use GNU binutils and our linker doesn't |
| 670 |
# understand linker scripts, just create a symlink. |
| 671 |
pushd "${ED}/usr/${libdir}" > /dev/null |
| 672 |
ln -snf "../../${libdir}/${tlib}" "${lib}" |
| 673 |
popd > /dev/null |
| 674 |
;; |
| 675 |
*-aix*|*-irix*|*64*-hpux*|*-interix*|*-winnt*) |
| 676 |
if ${auto} ; then |
| 677 |
mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die |
| 678 |
# no way to retrieve soname on these platforms (?) |
| 679 |
tlib=$(readlink "${ED}"/${libdir}/${lib}) |
| 680 |
tlib=${tlib##*/} |
| 681 |
if [[ -z ${tlib} ]] ; then |
| 682 |
# ok, apparently was not a symlink, don't remove it and |
| 683 |
# just link to it |
| 684 |
tlib=${lib} |
| 685 |
else |
| 686 |
rm -f "${ED}"/${libdir}/${lib} |
| 687 |
fi |
| 688 |
else |
| 689 |
tlib=${lib} |
| 690 |
fi |
| 691 |
|
| 692 |
# we don't have GNU binutils on these platforms, so we symlink |
| 693 |
# instead, which seems to work fine. Keep it relative, otherwise |
| 694 |
# we break some QA checks in Portage |
| 695 |
# on interix, the linker scripts would work fine in _most_ |
| 696 |
# situations. if a library links to such a linker script the |
| 697 |
# absolute path to the correct library is inserted into the binary, |
| 698 |
# which is wrong, since anybody linking _without_ libtool will miss |
| 699 |
# some dependencies, since the stupid linker cannot find libraries |
| 700 |
# hardcoded with absolute paths (as opposed to the loader, which |
| 701 |
# seems to be able to do this). |
| 702 |
# this has been seen while building shared-mime-info which needs |
| 703 |
# libxml2, but links without libtool (and does not add libz to the |
| 704 |
# command line by itself). |
| 705 |
pushd "${ED}/usr/${libdir}" > /dev/null |
| 706 |
ln -snf "../../${libdir}/${tlib}" "${lib}" |
| 707 |
popd > /dev/null |
| 708 |
;; |
| 709 |
hppa*-hpux*) # PA-RISC 32bit (SOM) only, others (ELF) match *64*-hpux* above. |
| 710 |
if ${auto} ; then |
| 711 |
tlib=$(chatr "${ED}"/usr/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}') |
| 712 |
[[ -z ${tlib} ]] && tlib=${lib} |
| 713 |
tlib=${tlib##*/} # 'internal name' can have a path component |
| 714 |
mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die |
| 715 |
# some SONAMEs are funky: they encode a version before the .so |
| 716 |
if [[ ${tlib} != ${lib}* ]] ; then |
| 717 |
mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die |
| 718 |
fi |
| 719 |
[[ ${tlib} != ${lib} ]] && |
| 720 |
rm -f "${ED}"/${libdir}/${lib} |
| 721 |
else |
| 722 |
tlib=$(chatr "${ED}"/${libdir}/${lib} | sed -n '/internal name:/{n;s/^ *//;p;q}') |
| 723 |
[[ -z ${tlib} ]] && tlib=${lib} |
| 724 |
tlib=${tlib##*/} # 'internal name' can have a path component |
| 725 |
fi |
| 726 |
pushd "${ED}"/usr/${libdir} >/dev/null |
| 727 |
ln -snf "../../${libdir}/${tlib}" "${lib}" |
| 728 |
# need the internal name in usr/lib too, to be available at runtime |
| 729 |
# when linked with /path/to/lib.sl (hardcode_direct_absolute=yes) |
| 730 |
[[ ${tlib} != ${lib} ]] && |
| 731 |
ln -snf "../../${libdir}/${tlib}" "${tlib}" |
| 732 |
popd >/dev/null |
| 733 |
;; |
| 734 |
*) |
| 735 |
if ${auto} ; then |
| 736 |
tlib=$(scanelf -qF'%S#F' "${ED}"/usr/${libdir}/${lib}) |
| 737 |
[[ -z ${tlib} ]] && die "unable to read SONAME from ${lib}" |
| 738 |
mv "${ED}"/usr/${libdir}/${lib}* "${ED}"/${libdir}/ || die |
| 739 |
# some SONAMEs are funky: they encode a version before the .so |
| 740 |
if [[ ${tlib} != ${lib}* ]] ; then |
| 741 |
mv "${ED}"/usr/${libdir}/${tlib}* "${ED}"/${libdir}/ || die |
| 742 |
fi |
| 743 |
rm -f "${ED}"/${libdir}/${lib} |
| 744 |
else |
| 745 |
tlib=${lib} |
| 746 |
fi |
| 747 |
cat > "${ED}/usr/${libdir}/${lib}" <<-END_LDSCRIPT |
| 748 |
/* GNU ld script |
| 749 |
Since Gentoo has critical dynamic libraries in /lib, and the static versions |
| 750 |
in /usr/lib, we need to have a "fake" dynamic lib in /usr/lib, otherwise we |
| 751 |
run into linking problems. This "fake" dynamic lib is a linker script that |
| 752 |
redirects the linker to the real lib. And yes, this works in the cross- |
| 753 |
compiling scenario as the sysroot-ed linker will prepend the real path. |
| 754 |
|
| 755 |
See bug http://bugs.gentoo.org/4411 for more info. |
| 756 |
*/ |
| 757 |
${output_format} |
| 758 |
GROUP ( ${EPREFIX}/${libdir}/${tlib} ) |
| 759 |
END_LDSCRIPT |
| 760 |
;; |
| 761 |
esac |
| 762 |
fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" |
| 763 |
done |
| 764 |
} |
| 765 |
|
| 766 |
fi |
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