pgo.sh.in

#!/usr/bin/bash
#
#   pgo.sh - Compile with, or utilize profile guided optimization
#

[[ -n "$LIBMAKEPKG_BUILDENV_PGO_SH" ]] && return
LIBMAKEPKG_BUILDENV_PGO_SH=1

LIBRARY=${LIBRARY:-'@libmakepkgdir@'}

source "$LIBRARY/util/message.sh"
source "$LIBRARY/util/option.sh"

build_options+=('pgo')
buildenv_functions+=('buildenv_pgo')

buildenv_pgo() {
    if check_buildoption "pgo" "y"; then
        [[ -n ${PROFDEST} ]] && _PROFDEST=$(canonicalize_path ${PROFDEST})
        PROFDEST=${_PROFDEST:-$PROFDEST}
        PROFDEST=${PROFDEST:-$startdir} #default to $startdir if undefined

        if [[ ! -w $PROFDEST ]] ; then
            error "$(gettext "You do not have write permission to store profiles in %s.")" "$PROFDEST"
                plain "$(gettext "Aborting...")"
                exit 1
            fi

            [[ "$INFAKEROOT" == 1 ]] && return

            if [[ ! -d $PROFDEST/$pkgbase.gen ]]; then
                pgoflags=" -fprofile-generate -fprofile-dir=$PROFDEST/$pkgbase.gen"
                pgoldflags=" -lgcov --coverage"
                msg2 "Profile data will be generated."
            else
                [[ -d $PROFDEST/$pkgbase.used ]] && rm -rf $PROFDEST/$pkgbase.used
                mv $PROFDEST/$pkgbase.{gen,used}
                pgoflags=" -fprofile-correction -fprofile-use -fprofile-dir=$PROFDEST/$pkgbase.used"
                pgoldflags=" -lgcov"
                msg2 "Profile data will be applied."
            fi

            CFLAGS+="$pgoflags"
            CXXFLAGS+="$pgoflags"
            LDFLAGS+="$pgoldflags"

        fi
    }