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authorFabian Groffen <grobian@gentoo.org>2021-05-04 19:15:51 +0200
committerFabian Groffen <grobian@gentoo.org>2021-05-04 19:15:51 +0200
commit5b4bc212f92575f039a0a39aec988beae66f6701 (patch)
tree978bb7586426a3ce68f7ff173933a6721471b16e
parenteclass/db: drop from prefix (diff)
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eclass/flag-o-matic: drop from prefix
Signed-off-by: Fabian Groffen <grobian@gentoo.org>
-rw-r--r--eclass/flag-o-matic.eclass776
1 files changed, 0 insertions, 776 deletions
diff --git a/eclass/flag-o-matic.eclass b/eclass/flag-o-matic.eclass
deleted file mode 100644
index 20ee39d98b..0000000000
--- a/eclass/flag-o-matic.eclass
+++ /dev/null
@@ -1,776 +0,0 @@
-# Copyright 1999-2020 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-# @ECLASS: flag-o-matic.eclass
-# @MAINTAINER:
-# toolchain@gentoo.org
-# @BLURB: common functions to manipulate and query toolchain flags
-# @DESCRIPTION:
-# This eclass contains a suite of functions to help developers sanely
-# and safely manage toolchain flags in their builds.
-
-if [[ -z ${_FLAG_O_MATIC_ECLASS} ]]; then
-_FLAG_O_MATIC_ECLASS=1
-
-inherit eutils toolchain-funcs multilib
-
-# Return all the flag variables that our high level funcs operate on.
-all-flag-vars() {
- echo {ADA,C,CPP,CXX,CCAS,F,FC,LD}FLAGS
-}
-
-# {C,CPP,CXX,CCAS,F,FC,LD}FLAGS that we allow in strip-flags
-# Note: shell globs and character lists are allowed
-setup-allowed-flags() {
- ALLOWED_FLAGS=(
- -pipe -O '-O[12sg]' -mcpu -march -mtune
- '-fstack-protector*' '-fsanitize*' '-fstack-check*' -fno-stack-check
- -fbounds-check -fbounds-checking -fno-strict-overflow
- -fno-PIE -fno-pie -nopie -no-pie -fno-unit-at-a-time
-
- # debugging symbols should generally be very safe to add
- -g '-g[0-9]'
- -ggdb '-ggdb[0-9]'
- -gdwarf '-gdwarf-*'
- -gstabs -gstabs+
- -gz
-
- -fno-ident -fpermissive -frecord-gcc-switches
- '-fdiagnostics*' '-fplugin*'
- '-W*' -w
-
- # CPPFLAGS and LDFLAGS
- '-[DUILR]*' '-Wl,*'
-
- # Linker choice flag
- '-fuse-ld'
- )
-
- # allow a bunch of flags that negate features / control ABI
- ALLOWED_FLAGS+=(
- '-fno-stack-protector*' '-fabi-version=*'
- -fno-strict-aliasing -fno-bounds-check -fno-bounds-checking -fstrict-overflow
- -fno-omit-frame-pointer '-fno-builtin*'
- )
- ALLOWED_FLAGS+=(
- -mregparm -mno-app-regs -mapp-regs -mno-mmx -mno-sse
- -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 -mno-sse4.2
- -mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow -mno-popcnt
- -mno-abm -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt
- -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu
- -mieee -mieee-with-inexact -mschedule -mfloat-gprs -mspe -mno-spe
- -mtls-direct-seg-refs -mno-tls-direct-seg-refs -mflat -mno-flat
- -mno-faster-structs -mfaster-structs -m32 -m64 -mx32 -mabi
- -mlittle-endian -mbig-endian -EL -EB -fPIC -mlive-g0 -mcmodel
- -mstack-bias -mno-stack-bias -msecure-plt '-m*-toc' -mfloat-abi
- -mfix-r4000 -mno-fix-r4000 -mfix-r4400 -mno-fix-r4400
- -mfix-rm7000 -mno-fix-rm7000 -mfix-r10000 -mno-fix-r10000
- -mr10k-cache-barrier -mthumb -marm
-
- # gcc 4.5
- -mno-fma4 -mno-movbe -mno-xop -mno-lwp
- # gcc 4.6
- -mno-fsgsbase -mno-rdrnd -mno-f16c -mno-bmi -mno-tbm
- # gcc 4.7
- -mno-avx2 -mno-bmi2 -mno-fma -mno-lzcnt
- # gcc 4.8
- -mno-fxsr -mno-hle -mno-rtm -mno-xsave -mno-xsaveopt
- # gcc 4.9
- -mno-avx512cd -mno-avx512er -mno-avx512f -mno-avx512pf -mno-sha
- )
-
- # Allow some safe individual flags. Should come along with the bug reference.
- ALLOWED_FLAGS+=(
- # Allow explicit stack realignment to run non-conformant
- # binaries: bug #677852
- -mstackrealign
- )
-}
-
-# inverted filters for hardened compiler. This is trying to unpick
-# the hardened compiler defaults.
-_filter-hardened() {
- local f
- for f in "$@" ; do
- case "${f}" in
- # Ideally we should only concern ourselves with PIE flags,
- # not -fPIC or -fpic, but too many places filter -fPIC without
- # thinking about -fPIE.
- -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
- gcc-specs-pie || continue
- if ! is-flagq -nopie && ! is-flagq -no-pie ; then
- # Support older Gentoo form first (-nopie) before falling
- # back to the official gcc-6+ form (-no-pie).
- if test-flags -nopie >/dev/null ; then
- append-flags -nopie
- else
- append-flags -no-pie
- fi
- fi
- ;;
- -fstack-protector)
- gcc-specs-ssp || continue
- is-flagq -fno-stack-protector || append-flags $(test-flags -fno-stack-protector);;
- -fstack-protector-all)
- gcc-specs-ssp-to-all || continue
- is-flagq -fno-stack-protector-all || append-flags $(test-flags -fno-stack-protector-all);;
- -fno-strict-overflow)
- gcc-specs-nostrict || continue
- is-flagq -fstrict-overflow || append-flags $(test-flags -fstrict-overflow);;
- esac
- done
-}
-
-# Remove occurrences of strings from variable given in $1
-# Strings removed are matched as globs, so for example
-# '-O*' would remove -O1, -O2 etc.
-_filter-var() {
- local f x var=$1 new=()
- shift
-
- for f in ${!var} ; do
- for x in "$@" ; do
- # Note this should work with globs like -O*
- [[ ${f} == ${x} ]] && continue 2
- done
- new+=( "${f}" )
- done
- export ${var}="${new[*]}"
-}
-
-# @FUNCTION: filter-flags
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Remove particular <flags> from {C,CPP,CXX,CCAS,F,FC,LD}FLAGS. Accepts shell globs.
-filter-flags() {
- _filter-hardened "$@"
- local v
- for v in $(all-flag-vars) ; do
- _filter-var ${v} "$@"
- done
- return 0
-}
-
-# @FUNCTION: filter-lfs-flags
-# @DESCRIPTION:
-# Remove flags that enable Large File Support.
-filter-lfs-flags() {
- [[ $# -ne 0 ]] && die "filter-lfs-flags takes no arguments"
- # http://www.gnu.org/s/libc/manual/html_node/Feature-Test-Macros.html
- # _LARGEFILE_SOURCE: enable support for new LFS funcs (ftello/etc...)
- # _LARGEFILE64_SOURCE: enable support for 64bit variants (off64_t/fseeko64/etc...)
- # _FILE_OFFSET_BITS: default to 64bit variants (off_t is defined as off64_t)
- filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
-}
-
-# @FUNCTION: filter-ldflags
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Remove particular <flags> from LDFLAGS. Accepts shell globs.
-filter-ldflags() {
- _filter-var LDFLAGS "$@"
- return 0
-}
-
-# @FUNCTION: append-cppflags
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Add extra <flags> to the current CPPFLAGS.
-append-cppflags() {
- [[ $# -eq 0 ]] && return 0
- export CPPFLAGS+=" $*"
- return 0
-}
-
-# @FUNCTION: append-cflags
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Add extra <flags> to the current CFLAGS. If a flag might not be supported
-# with different compilers (or versions), then use test-flags-CC like so:
-# @CODE
-# append-cflags $(test-flags-CC -funky-flag)
-# @CODE
-append-cflags() {
- [[ $# -eq 0 ]] && return 0
- # Do not do automatic flag testing ourselves. #417047
- export CFLAGS+=" $*"
- return 0
-}
-
-# @FUNCTION: append-cxxflags
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Add extra <flags> to the current CXXFLAGS. If a flag might not be supported
-# with different compilers (or versions), then use test-flags-CXX like so:
-# @CODE
-# append-cxxflags $(test-flags-CXX -funky-flag)
-# @CODE
-append-cxxflags() {
- [[ $# -eq 0 ]] && return 0
- # Do not do automatic flag testing ourselves. #417047
- export CXXFLAGS+=" $*"
- return 0
-}
-
-# @FUNCTION: append-fflags
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Add extra <flags> to the current {F,FC}FLAGS. If a flag might not be supported
-# with different compilers (or versions), then use test-flags-F77 like so:
-# @CODE
-# append-fflags $(test-flags-F77 -funky-flag)
-# @CODE
-append-fflags() {
- [[ $# -eq 0 ]] && return 0
- # Do not do automatic flag testing ourselves. #417047
- export FFLAGS+=" $*"
- export FCFLAGS+=" $*"
- return 0
-}
-
-# @FUNCTION: append-lfs-flags
-# @DESCRIPTION:
-# Add flags that enable Large File Support.
-append-lfs-flags() {
- [[ $# -ne 0 ]] && die "append-lfs-flags takes no arguments"
- # see comments in filter-lfs-flags func for meaning of these
- append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
-}
-
-# @FUNCTION: append-ldflags
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Add extra <flags> to the current LDFLAGS.
-append-ldflags() {
- [[ $# -eq 0 ]] && return 0
- local flag
- for flag in "$@"; do
- [[ ${flag} == -l* ]] && \
- eqawarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS"
- done
-
- export LDFLAGS="${LDFLAGS} $*"
- return 0
-}
-
-# @FUNCTION: append-flags
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Add extra <flags> to your current {C,CXX,F,FC}FLAGS.
-append-flags() {
- [[ $# -eq 0 ]] && return 0
- case " $* " in
- *' '-[DIU]*) eqawarn 'please use append-cppflags for preprocessor flags' ;;
- *' '-L*|\
- *' '-Wl,*) eqawarn 'please use append-ldflags for linker flags' ;;
- esac
- append-cflags "$@"
- append-cxxflags "$@"
- append-fflags "$@"
- return 0
-}
-
-# @FUNCTION: replace-flags
-# @USAGE: <old> <new>
-# @DESCRIPTION:
-# Replace the <old> flag with <new>. Accepts shell globs for <old>.
-replace-flags() {
- [[ $# != 2 ]] && die "Usage: replace-flags <old flag> <new flag>"
-
- local f var new
- for var in $(all-flag-vars) ; do
- # Looping over the flags instead of using a global
- # substitution ensures that we're working with flag atoms.
- # Otherwise globs like -O* have the potential to wipe out the
- # list of flags.
- new=()
- for f in ${!var} ; do
- # Note this should work with globs like -O*
- [[ ${f} == ${1} ]] && f=${2}
- new+=( "${f}" )
- done
- export ${var}="${new[*]}"
- done
-
- return 0
-}
-
-# @FUNCTION: replace-cpu-flags
-# @USAGE: <old> <new>
-# @DESCRIPTION:
-# Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu
-# with flags that select the <new> cpu. Accepts shell globs for <old>.
-replace-cpu-flags() {
- local newcpu="$#" ; newcpu="${!newcpu}"
- while [ $# -gt 1 ] ; do
- # quote to make sure that no globbing is done (particularly on
- # ${oldcpu}) prior to calling replace-flags
- replace-flags "-march=${1}" "-march=${newcpu}"
- replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
- replace-flags "-mtune=${1}" "-mtune=${newcpu}"
- shift
- done
- return 0
-}
-
-_is_flagq() {
- local x var="$1[*]"
- for x in ${!var} ; do
- [[ ${x} == $2 ]] && return 0
- done
- return 1
-}
-
-# @FUNCTION: is-flagq
-# @USAGE: <flag>
-# @DESCRIPTION:
-# Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs.
-is-flagq() {
- [[ -n $2 ]] && die "Usage: is-flag <flag>"
-
- local var
- for var in $(all-flag-vars) ; do
- _is_flagq ${var} "$1" && return 0
- done
- return 1
-}
-
-# @FUNCTION: is-flag
-# @USAGE: <flag>
-# @DESCRIPTION:
-# Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs.
-is-flag() {
- is-flagq "$@" && echo true
-}
-
-# @FUNCTION: is-ldflagq
-# @USAGE: <flag>
-# @DESCRIPTION:
-# Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs.
-is-ldflagq() {
- [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
- _is_flagq LDFLAGS $1
-}
-
-# @FUNCTION: is-ldflag
-# @USAGE: <flag>
-# @DESCRIPTION:
-# Echo's "true" if flag is set in LDFLAGS. Accepts shell globs.
-is-ldflag() {
- is-ldflagq "$@" && echo true
-}
-
-# @FUNCTION: filter-mfpmath
-# @USAGE: <math types>
-# @DESCRIPTION:
-# Remove specified math types from the fpmath flag. For example, if the user
-# has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with
-# -mfpmath=386.
-filter-mfpmath() {
- local orig_mfpmath new_math prune_math
-
- # save the original -mfpmath flag
- orig_mfpmath=$(get-flag -mfpmath)
- # get the value of the current -mfpmath flag
- new_math=$(get-flag mfpmath)
- # convert "both" to something we can filter
- new_math=${new_math/both/387,sse}
- new_math=" ${new_math//[,+]/ } "
- # figure out which math values are to be removed
- prune_math=""
- for prune_math in "$@" ; do
- new_math=${new_math/ ${prune_math} / }
- done
- new_math=$(echo ${new_math})
- new_math=${new_math// /,}
-
- if [[ -z ${new_math} ]] ; then
- # if we're removing all user specified math values are
- # slated for removal, then we just filter the flag
- filter-flags ${orig_mfpmath}
- else
- # if we only want to filter some of the user specified
- # math values, then we replace the current flag
- replace-flags ${orig_mfpmath} -mfpmath=${new_math}
- fi
- return 0
-}
-
-# @FUNCTION: strip-flags
-# @DESCRIPTION:
-# Strip *FLAGS of everything except known good/safe flags. This runs over all
-# flags returned by all_flag_vars().
-strip-flags() {
- [[ $# -ne 0 ]] && die "strip-flags takes no arguments"
- local x y var
-
- local ALLOWED_FLAGS
- setup-allowed-flags
-
- set -f # disable pathname expansion
-
- for var in $(all-flag-vars) ; do
- local new=()
-
- for x in ${!var} ; do
- local flag=${x%%=*}
- for y in "${ALLOWED_FLAGS[@]}" ; do
- if [[ -z ${flag%%${y}} ]] ; then
- new+=( "${x}" )
- break
- fi
- done
- done
-
- # In case we filtered out all optimization flags fallback to -O2
- if _is_flagq ${var} "-O*" && ! _is_flagq new "-O*" ; then
- new+=( -O2 )
- fi
-
- if [[ ${!var} != "${new[*]}" ]] ; then
- einfo "strip-flags: ${var}: changed '${!var}' to '${new[*]}'"
- fi
- export ${var}="${new[*]}"
- done
-
- set +f # re-enable pathname expansion
-
- return 0
-}
-
-test-flag-PROG() {
- local comp=$1
- local lang=$2
- shift 2
-
- if [[ -z ${comp} ]]; then
- return 1
- fi
- if [[ -z $1 ]]; then
- return 1
- fi
-
- # verify selected compiler exists before using it
- comp=($(tc-get${comp}))
- # 'comp' can already contain compiler options.
- # 'type' needs a binary name
- if ! type -p ${comp[0]} >/dev/null; then
- return 1
- fi
-
- # Set up test file.
- local in_src in_ext cmdline_extra=()
- case "${lang}" in
- # compiler/assembler only
- c)
- in_ext='c'
- in_src='int main(void) { return 0; }'
- cmdline_extra+=(-xc -c)
- ;;
- c++)
- in_ext='cc'
- in_src='int main(void) { return 0; }'
- cmdline_extra+=(-xc++ -c)
- ;;
- f77)
- in_ext='f'
- # fixed source form
- in_src=' end'
- cmdline_extra+=(-xf77 -c)
- ;;
- f95)
- in_ext='f90'
- in_src='end'
- cmdline_extra+=(-xf95 -c)
- ;;
-
- # C compiler/assembler/linker
- c+ld)
- in_ext='c'
- in_src='int main(void) { return 0; }'
- cmdline_extra+=(-xc)
- ;;
- esac
- local test_in=${T}/test-flag.${in_ext}
- local test_out=${T}/test-flag.exe
-
- printf "%s\n" "${in_src}" > "${test_in}" || die "Failed to create '${test_in}'"
-
- # Currently we rely on warning-free output of a compiler
- # before the flag to see if a flag prduces any warnings.
- # This has a few drawbacks:
- # - if compiler already generates warnings we filter out
- # every single flag: bug #712488
- # - if user actually wants to see warnings we just strip
- # them regardless of warnings type.
- #
- # We can add more selective detection of no-op flags via
- # '-Werror=ignored-optimization-argument' and similar error options
- # similar to what we are doing with '-Qunused-arguments'.
- local cmdline=(
- "${comp[@]}"
- # Clang will warn about unknown gcc flags but exit 0.
- # Need -Werror to force it to exit non-zero.
- -Werror
- "$@"
- # -x<lang> options need to go before first source file
- "${cmdline_extra[@]}"
-
- "${test_in}" -o "${test_out}"
- )
-
- if ! "${cmdline[@]}" &>/dev/null; then
- # -Werror makes clang bail out on unused arguments as well;
- # try to add -Qunused-arguments to work-around that
- # other compilers don't support it but then, it's failure like
- # any other
- cmdline+=( -Qunused-arguments )
- "${cmdline[@]}" &>/dev/null
- fi
-}
-
-# @FUNCTION: test-flag-CC
-# @USAGE: <flag>
-# @DESCRIPTION:
-# Returns shell true if <flag> is supported by the C compiler, else returns shell false.
-test-flag-CC() { test-flag-PROG "CC" c "$@"; }
-
-# @FUNCTION: test-flag-CXX
-# @USAGE: <flag>
-# @DESCRIPTION:
-# Returns shell true if <flag> is supported by the C++ compiler, else returns shell false.
-test-flag-CXX() { test-flag-PROG "CXX" c++ "$@"; }
-
-# @FUNCTION: test-flag-F77
-# @USAGE: <flag>
-# @DESCRIPTION:
-# Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false.
-test-flag-F77() { test-flag-PROG "F77" f77 "$@"; }
-
-# @FUNCTION: test-flag-FC
-# @USAGE: <flag>
-# @DESCRIPTION:
-# Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false.
-test-flag-FC() { test-flag-PROG "FC" f95 "$@"; }
-
-# @FUNCTION: test-flag-CCLD
-# @USAGE: <flag>
-# @DESCRIPTION:
-# Returns shell true if <flag> is supported by the C compiler and linker, else returns shell false.
-test-flag-CCLD() { test-flag-PROG "CC" c+ld "$@"; }
-
-test-flags-PROG() {
- local comp=$1
- local flags=()
- local x
-
- shift
-
- [[ -z ${comp} ]] && return 1
-
- while (( $# )); do
- case "$1" in
- # '-B /foo': bug # 687198
- --param|-B)
- if test-flag-${comp} "$1" "$2"; then
- flags+=( "$1" "$2" )
- fi
- shift 2
- ;;
- *)
- if test-flag-${comp} "$1"; then
- flags+=( "$1" )
- fi
- shift 1
- ;;
- esac
- done
-
- echo "${flags[*]}"
-
- # Just bail if we dont have any flags
- [[ ${#flags[@]} -gt 0 ]]
-}
-
-# @FUNCTION: test-flags-CC
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Returns shell true if <flags> are supported by the C compiler, else returns shell false.
-test-flags-CC() { test-flags-PROG "CC" "$@"; }
-
-# @FUNCTION: test-flags-CXX
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Returns shell true if <flags> are supported by the C++ compiler, else returns shell false.
-test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
-
-# @FUNCTION: test-flags-F77
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false.
-test-flags-F77() { test-flags-PROG "F77" "$@"; }
-
-# @FUNCTION: test-flags-FC
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false.
-test-flags-FC() { test-flags-PROG "FC" "$@"; }
-
-# @FUNCTION: test-flags-CCLD
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Returns shell true if <flags> are supported by the C compiler and default linker, else returns shell false.
-test-flags-CCLD() { test-flags-PROG "CCLD" "$@"; }
-
-# @FUNCTION: test-flags
-# @USAGE: <flags>
-# @DESCRIPTION:
-# Short-hand that should hopefully work for both C and C++ compiler, but
-# its really only present due to the append-flags() abomination.
-test-flags() { test-flags-CC "$@"; }
-
-# @FUNCTION: test_version_info
-# @USAGE: <version>
-# @DESCRIPTION:
-# Returns shell true if the current C compiler version matches <version>, else returns shell false.
-# Accepts shell globs.
-test_version_info() {
- if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
- return 0
- else
- return 1
- fi
-}
-
-# @FUNCTION: strip-unsupported-flags
-# @DESCRIPTION:
-# Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain.
-strip-unsupported-flags() {
- [[ $# -ne 0 ]] && die "strip-unsupported-flags takes no arguments"
- export CFLAGS=$(test-flags-CC ${CFLAGS})
- export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
- export FFLAGS=$(test-flags-F77 ${FFLAGS})
- export FCFLAGS=$(test-flags-FC ${FCFLAGS})
- export LDFLAGS=$(test-flags-CCLD ${LDFLAGS})
-}
-
-# @FUNCTION: get-flag
-# @USAGE: <flag>
-# @DESCRIPTION:
-# Find and echo the value for a particular flag. Accepts shell globs.
-get-flag() {
- [[ $# -ne 1 ]] && die "usage: <flag>"
- local f var findflag="$1"
-
- # this code looks a little flaky but seems to work for
- # everything we want ...
- # for example, if CFLAGS="-march=i686":
- # `get-flag -march` == "-march=i686"
- # `get-flag march` == "i686"
- for var in $(all-flag-vars) ; do
- for f in ${!var} ; do
- if [ "${f/${findflag}}" != "${f}" ] ; then
- printf "%s\n" "${f/-${findflag}=}"
- return 0
- fi
- done
- done
- return 1
-}
-
-# @FUNCTION: replace-sparc64-flags
-# @DESCRIPTION:
-# Sets mcpu to v8 and uses the original value as mtune if none specified.
-replace-sparc64-flags() {
- [[ $# -ne 0 ]] && die "replace-sparc64-flags takes no arguments"
- local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
-
- if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
- for x in ${SPARC64_CPUS}; do
- CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
- done
- else
- for x in ${SPARC64_CPUS}; do
- CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
- done
- fi
-
- if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
- for x in ${SPARC64_CPUS}; do
- CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
- done
- else
- for x in ${SPARC64_CPUS}; do
- CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
- done
- fi
-
- export CFLAGS CXXFLAGS
-}
-
-# @FUNCTION: append-libs
-# @USAGE: <libs>
-# @DESCRIPTION:
-# Add extra <libs> to the current LIBS. All arguments should be prefixed with
-# either -l or -L. For compatibility, if arguments are not prefixed as
-# options, they are given a -l prefix automatically.
-append-libs() {
- [[ $# -eq 0 ]] && return 0
- local flag
- for flag in "$@"; do
- if [[ -z "${flag// }" ]]; then
- eqawarn "Appending an empty argument to LIBS is invalid! Skipping."
- continue
- fi
- case $flag in
- -[lL]*)
- export LIBS="${LIBS} ${flag}"
- ;;
- -*)
- eqawarn "Appending non-library to LIBS (${flag}); Other linker flags should be passed via LDFLAGS"
- export LIBS="${LIBS} ${flag}"
- ;;
- *)
- export LIBS="${LIBS} -l${flag}"
- esac
- done
-
- return 0
-}
-
-# @FUNCTION: raw-ldflags
-# @USAGE: [flags]
-# @DESCRIPTION:
-# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
-# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
-# to gcc where it needs the '-Wl,'.
-#
-# If no flags are specified, then default to ${LDFLAGS}.
-raw-ldflags() {
- local x input="$@"
- [[ -z ${input} ]] && input=${LDFLAGS}
- set --
- for x in ${input} ; do
- case ${x} in
- -Wl,*)
- x=${x#-Wl,}
- set -- "$@" ${x//,/ }
- ;;
- *) # Assume it's a compiler driver flag, so throw it away #441808
- ;;
- esac
- done
- echo "$@"
-}
-
-# @FUNCTION: no-as-needed
-# @RETURN: Flag to disable asneeded behavior for use with append-ldflags.
-no-as-needed() {
- [[ $# -ne 0 ]] && die "no-as-needed takes no arguments"
- case $($(tc-getLD) -v 2>&1 </dev/null) in
- *GNU*) # GNU ld
- echo "-Wl,--no-as-needed" ;;
- esac
-}
-
-fi