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#!/usr/bin/bash
#
# ZZ-lto.sh - Compile with link-time optimization
#
[[ -n "$LIBMAKEPKG_BUILDENV_LTO_SH" ]] && return
LIBMAKEPKG_BUILDENV_LTO_SH=1
LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
source "$LIBRARY/util/option.sh"
build_options+=('lto' 'lto-thin' 'lto-clang' 'lto-thin-clang')
buildenv_functions+=('buildenv_lto')
buildenv_lto() {
if check_buildoption "lto" "y" || check_buildoption "lto-thin" "y" || \
check_buildoption "lto-clang" "y" || check_buildoption "lto-thin-clang" "y"; then
ltoflags=" -flto"
check_buildoption "lto-thin-clang" "y" && ltoflags+="=thin"
check_buildoption "lto-thin" "y" || check_buildoption "lto" "y" && \
[[ -f "$(gcc -print-search-dirs | grep install | awk '{print $2 "liblto_plugin.so"}')" ]] && \
ltoflags+="=auto -fno-fat-lto-objects"
check_buildoption "lto" "y" && ltoflags+=" -flto-partition=none"
CFLAGS+="$ltoflags"
CXXFLAGS+="$ltoflags"
LDFLAGS+=" -fuse-linker-plugin $CFLAGS $CXXFLAGS"
ltoplugin="$(gcc -print-search-dirs | grep install | awk '{print $2 "liblto_plugin.so"}')"
ARFLAGS+=" --plugin $ltoplugin"
RANLIBFLAGS+=" --plugin $ltoplugin"
NMFLAGS+=" --plugin $ltoplugin"
fi
}
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