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# Copyright 1999-2007 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 1.73 2007/07/22 19:59:48 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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___ECLASS_RECUR_TOOLCHAIN_FUNCS="yes" |
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[[ -z ${___ECLASS_RECUR_MULTILIB} ]] && 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() { |
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local var=$1 |
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local prog=$2 |
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|
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if [[ -n ${!var} ]] ; then |
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echo "${!var}" |
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return 0 |
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fi |
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|
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local search= |
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[[ -n $3 ]] && search=$(type -p "$3-${prog}") |
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[[ -z ${search} && -n ${CHOST} ]] && search=$(type -p "${CHOST}-${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 "${!var}" |
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} |
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|
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# @FUNCTION: tc-getAR |
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# @USAGE: [toolchain prefix] |
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# @RETURN: name of the archiver |
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tc-getAR() { tc-getPROG AR ar "$@"; } |
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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-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 f77 "$@"; } |
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# @FUNCTION: tc-getF90 |
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# @USAGE: [toolchain prefix] |
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# @RETURN: name of the Fortran 90 compiler |
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tc-getF90() { tc-getPROG F90 gfortran "$@"; } |
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# @FUNCTION: tc-getFORTRAN |
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# @USAGE: [toolchain prefix] |
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# @RETURN: name of the Fortran compiler |
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tc-getFORTRAN() { tc-getPROG FORTRAN 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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|
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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() { |
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local v |
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for v in CC_FOR_BUILD BUILD_CC HOSTCC ; do |
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if [[ -n ${!v} ]] ; then |
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export BUILD_CC=${!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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if [[ -n ${CBUILD} ]] ; then |
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search=$(type -p ${CBUILD}-gcc) |
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search=${search##*/} |
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fi |
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search=${search:-gcc} |
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|
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export BUILD_CC=${search} |
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echo "${search}" |
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} |
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|
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# @FUNCTION: tc-export |
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# @USAGE: <list of toolchain variables> |
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# @DESCRIPTION: |
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# Quick way to export a bunch of compiler vars at once. |
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tc-export() { |
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local var |
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for var in "$@" ; do |
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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 should support hardfloat |
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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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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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# 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;; |
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i?86*) ninj i386 x86;; |
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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 |
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# have been unified into simply 'powerpc', but until 2.6.16, |
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# ppc32 is still using ARCH="ppc" as default |
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if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]] && [[ ${type} == "kern" ]] ; then |
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echo powerpc |
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elif [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]] && [[ ${type} == "kern" ]] ; then |
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if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]] ; then |
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echo powerpc |
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else |
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echo ppc |
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fi |
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elif [[ ${host} == powerpc64* ]] ; then |
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echo ppc64 |
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elif [[ ${PROFILE_ARCH} == "ppc64" ]] ; then |
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ninj ppc64 ppc |
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else |
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echo ppc |
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fi |
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;; |
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s390*) echo s390;; |
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sh64*) ninj sh64 sh;; |
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sh*) echo sh;; |
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sparc64*) ninj sparc64 sparc;; |
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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;; |
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x86_64*) ninj x86_64 amd64;; |
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|
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# since our usage of tc-arch is largely concerned with |
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# normalizing inputs for testing ${CTARGET}, let's filter |
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# other cross targets (mingw and such) into the unknown. |
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*) echo unknown;; |
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esac |
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} |
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# @FUNCTION: tc-arch-kernel |
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# @USAGE: [toolchain prefix] |
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# @RETURN: name of the kernel arch according to the compiler target |
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tc-arch-kernel() { |
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tc-ninja_magic_to_arch kern "$@" |
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} |
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# @FUNCTION: tc-arch |
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# @USAGE: [toolchain prefix] |
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# @RETURN: name of the portage arch according to the compiler target |
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tc-arch() { |
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tc-ninja_magic_to_arch portage "$@" |
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} |
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|
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tc-endian() { |
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local host=$1 |
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[[ -z ${host} ]] && host=${CTARGET:-${CHOST}} |
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host=${host%%-*} |
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|
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case ${host} in |
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alpha*) echo big;; |
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arm*b*) echo big;; |
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arm*) echo little;; |
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cris*) echo little;; |
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hppa*) echo big;; |
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i?86*) echo little;; |
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ia64*) echo little;; |
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m68*) echo big;; |
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mips*l*) echo little;; |
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mips*) echo big;; |
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powerpc*) echo big;; |
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s390*) echo big;; |
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sh*b*) echo big;; |
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sh*) echo little;; |
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sparc*) echo big;; |
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x86_64*) echo little;; |
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*) echo wtf;; |
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esac |
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} |
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|
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# @FUNCTION: gcc-fullversion |
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# @RETURN: compiler version (major.minor.micro: [3.4.6]) |
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gcc-fullversion() { |
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$(tc-getCC "$@") -dumpversion |
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} |
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# @FUNCTION: gcc-version |
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# @RETURN: compiler version (major.minor: [3.4].6) |
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gcc-version() { |
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gcc-fullversion "$@" | cut -f1,2 -d. |
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} |
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# @FUNCTION: gcc-major-version |
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# @RETURN: major compiler version (major: [3].4.6) |
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gcc-major-version() { |
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gcc-version "$@" | cut -f1 -d. |
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} |
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# @FUNCTION: gcc-minor-version |
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# @RETURN: minor compiler version (minor: 3.[4].6) |
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gcc-minor-version() { |
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gcc-version "$@" | cut -f2 -d. |
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} |
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# @FUNCTION: gcc-micro-version |
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# @RETURN: micro compiler version (micro: 3.4.[6]) |
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gcc-micro-version() { |
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gcc-fullversion "$@" | cut -f3 -d. | cut -f1 -d- |
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} |
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|
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# Returns the installation directory - internal toolchain |
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# function for use by _gcc-specs-exists (for flag-o-matic). |
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_gcc-install-dir() { |
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echo "$($(tc-getCC) -print-search-dirs 2> /dev/null |\ |
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awk '$1=="install:" {print $2}')" |
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} |
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# Returns true if the indicated specs file exists - internal toolchain |
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# function for use by flag-o-matic. |
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_gcc-specs-exists() { |
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[[ -f $(_gcc-install-dir)/$1 ]] |
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} |
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|
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# Returns requested gcc specs directive unprocessed - for used by |
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# gcc-specs-directive() |
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# Note; later specs normally overwrite earlier ones; however if a later |
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# spec starts with '+' then it appends. |
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# gcc -dumpspecs is parsed first, followed by files listed by "gcc -v" |
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# as "Reading <file>", in order. Strictly speaking, if there's a |
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# $(gcc_install_dir)/specs, the built-in specs aren't read, however by |
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# the same token anything from 'gcc -dumpspecs' is overridden by |
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# the contents of $(gcc_install_dir)/specs so the result is the |
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# same either way. |
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_gcc-specs-directive_raw() { |
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local cc=$(tc-getCC) |
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local specfiles=$(LC_ALL=C ${cc} -v 2>&1 | awk '$1=="Reading" {print $NF}') |
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${cc} -dumpspecs 2> /dev/null | cat - ${specfiles} | awk -v directive=$1 \ |
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'BEGIN { pspec=""; spec=""; outside=1 } |
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$1=="*"directive":" { pspec=spec; spec=""; outside=0; next } |
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outside || NF==0 || ( substr($1,1,1)=="*" && substr($1,length($1),1)==":" ) { outside=1; next } |
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spec=="" && substr($0,1,1)=="+" { spec=pspec " " substr($0,2); next } |
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{ spec=spec $0 } |
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END { print spec }' |
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return 0 |
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} |
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|
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# Return the requested gcc specs directive, with all included |
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# specs expanded. |
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# Note, it does not check for inclusion loops, which cause it |
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# to never finish - but such loops are invalid for gcc and we're |
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# assuming gcc is operational. |
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gcc-specs-directive() { |
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local directive subdname subdirective |
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directive="$(_gcc-specs-directive_raw $1)" |
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while [[ ${directive} == *%\(*\)* ]]; do |
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subdname=${directive/*%\(} |
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subdname=${subdname/\)*} |
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subdirective="$(_gcc-specs-directive_raw ${subdname})" |
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directive="${directive//\%(${subdname})/${subdirective}}" |
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done |
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echo "${directive}" |
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return 0 |
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} |
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|
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# Returns true if gcc sets relro |
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gcc-specs-relro() { |
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local directive |
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directive=$(gcc-specs-directive link_command) |
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return $([[ ${directive/\{!norelro:} != ${directive} ]]) |
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} |
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# Returns true if gcc sets now |
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gcc-specs-now() { |
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local directive |
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directive=$(gcc-specs-directive link_command) |
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return $([[ ${directive/\{!nonow:} != ${directive} ]]) |
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} |
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# Returns true if gcc builds PIEs |
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gcc-specs-pie() { |
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local directive |
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directive=$(gcc-specs-directive cc1) |
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return $([[ ${directive/\{!nopie:} != ${directive} ]]) |
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} |
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# Returns true if gcc builds with the stack protector |
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gcc-specs-ssp() { |
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local directive |
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directive=$(gcc-specs-directive cc1) |
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return $([[ ${directive/\{!fno-stack-protector:} != ${directive} ]]) |
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} |
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# Returns true if gcc upgrades fstack-protector to fstack-protector-all |
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gcc-specs-ssp-to-all() { |
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local directive |
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directive=$(gcc-specs-directive cc1) |
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return $([[ ${directive/\{!fno-stack-protector-all:} != ${directive} ]]) |
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} |
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|
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|
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# @FUNCTION: gen_usr_ldscript |
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# @USAGE: <list of libs to create linker scripts for> |
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# @DESCRIPTION: |
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# This function generate linker scripts in /usr/lib for dynamic |
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# libs in /lib. This is to fix linking problems when you have |
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# the .so in /lib, and the .a in /usr/lib. What happens is that |
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# in some cases when linking dynamic, the .a in /usr/lib is used |
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# instead of the .so in /lib due to gcc/libtool tweaking ld's |
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# library search path. This causes many builds to fail. |
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# See bug #4411 for more info. |
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# |
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# Note that you should in general use the unversioned name of |
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# the library (libfoo.so), as ldconfig should usually update it |
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# correctly to point to the latest version of the library present. |
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gen_usr_ldscript() { |
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local lib libdir=$(get_libdir) output_format="" |
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# Just make sure it exists |
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dodir /usr/${libdir} |
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|
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# OUTPUT_FORMAT gives hints to the linker as to what binary format |
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# is referenced ... makes multilib saner |
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output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p') |
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[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )" |
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|
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for lib in "$@" ; do |
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if [[ ${USERLAND} == "Darwin" ]] ; then |
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ewarn "Not creating fake dynamic library for $lib on Darwin;" |
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ewarn "making a symlink instead." |
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dosym "/${libdir}/${lib}" "/usr/${libdir}/${lib}" |
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else |
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cat > "${D}/usr/${libdir}/${lib}" <<-END_LDSCRIPT |
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/* GNU ld script |
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Since Gentoo has critical dynamic libraries |
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in /lib, and the static versions in /usr/lib, |
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we need to have a "fake" dynamic lib in /usr/lib, |
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otherwise we run into linking problems. |
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|
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See bug http://bugs.gentoo.org/4411 for more info. |
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*/ |
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${output_format} |
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GROUP ( /${libdir}/${lib} ) |
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END_LDSCRIPT |
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fi |
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fperms a+x "/usr/${libdir}/${lib}" || die "could not change perms on ${lib}" |
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done |
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} |
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