{
    if [[ ${EBUILD_PHASE} != "postinst" ]]; then
        eerror "preserve_old_lib_notify() must be called from pkg_postinst() only";
        die "Invalid preserve_old_lib_notify() usage";
    fi;
    has preserve-libs ${FEATURES} && return 0;
    local lib notice=0;
    for lib in "$@";
    do
        [[ -e ${ROOT}/${lib} ]] || continue;
        if [[ ${notice} -eq 0 ]]; then
            notice=1;
            ewarn "Old versions of installed libraries were detected on your system.";
            ewarn "In order to avoid breaking packages that depend on these old libs,";
            ewarn "the libraries are not being removed.  You need to run revdep-rebuild";
            ewarn "in order to remove these old dependencies.  If you do not have this";
            ewarn "helper program, simply emerge the 'gentoolkit' package.";
            ewarn;
        fi;
        [[ ${PN} == "mpfr" ]] && lib=${lib##*/};
        ewarn "  # revdep-rebuild --library '${lib}' && rm '${lib}'";
    done
}
raw-ldflags ()
{
    local x input="$@";
    [[ -z ${input} ]] && input=${LDFLAGS};
    set --;
    for x in ${input};
    do
        x=${x#-Wl,};
        set -- "$@" ${x//,/ };
    done;
    echo "$@"
}
replace-cpu-flags ()
{
    local newcpu="$#";
    newcpu="${!newcpu}";
    while [ $# -gt 1 ]; do
        replace-flags "-march=${1}" "-march=${newcpu}";
        replace-flags "-mcpu=${1}" "-mcpu=${newcpu}";
        replace-flags "-mtune=${1}" "-mtune=${newcpu}";
        shift;
    done;
    return 0
}
replace-flags ()
{
    [[ $# != 2 ]] && die "Usage: replace-flags <old flag> <new flag>";
    local f var new;
    for var in $(all-flag-vars);
    do
        new=();
        for f in ${!var};
        do
            [[ ${f} == ${1} ]] && f=${2};
            new+=("${f}");
        done;
        eval export ${var}=\""${new[*]}"\";
    done;
    return 0
}
replace-sparc64-flags ()
{
    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
}
replace_all_version_separators ()
{
    local c=($(get_all_version_components "${2:-${PV}}"));
    c=${c[@]//[-._]/$1};
    echo ${c// }
}
replace_version_separator ()
{
    eshopts_push -s extglob;
    local w c v="${3:-${PV}}";
    declare -i i found=0;
    w=${1:-1};
    c=($(get_all_version_components ${v}));
    if [[ ${w} != *[[:digit:]]* ]]; then
        for ((i = 0; i < ${#c[@]}; i++))
        do
            if [[ ${c[i]} == ${w} ]]; then
                c[i]=${2};
                break;
            fi;
        done;
    else
        for ((i = 0; i < ${#c[@]}; i++))
        do
            if [[ -n "${c[i]//[^-._]}" ]]; then
                found+=1;
                if ((found == w)); then
                    c[i]=${2};
                    break;
                fi;
            fi;
        done;
    fi;
    c=${c[*]};
    echo ${c// };
    eshopts_pop
}
save_library_dependencies ()
{
    local depsfile="${T}/${PN}";
    ebegin "Saving library dependencies in ${depsfile##*/}";
    echo "EXPORT_LIBRARY_DEPENDENCIES(\"${depsfile}\")" >> "${S}/CMakeLists.txt" || die "Failed to save the library dependencies.";
    eend $?
}
setup-allowed-flags ()
{
    ALLOWED_FLAGS="-pipe";
    ALLOWED_FLAGS+=" -O -O1 -O2 -Os -mcpu -march -mtune";
    ALLOWED_FLAGS+=" -fstack-protector -fstack-protector-all";
    ALLOWED_FLAGS+=" -fbounds-checking -fno-strict-overflow";
    ALLOWED_FLAGS+=" -fno-PIE -fno-pie -fno-unit-at-a-time";
    ALLOWED_FLAGS+=" -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+";
    ALLOWED_FLAGS+=" -fno-ident -fpermissive";
    ALLOWED_FLAGS+=" -W* -w";
    ALLOWED_FLAGS+=" -fno-stack-protector -fno-stack-protector-all 		-fno-strict-aliasing -fno-bounds-checking -fstrict-overflow 		-fno-omit-frame-pointer";
    ALLOWED_FLAGS+=" -mregparm -mno-app-regs -mapp-regs -mno-mmx -mno-sse 		-mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 -mno-sse4.2 		-mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow -mno-popcnt 		-mno-abm -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt 		-msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu 		-mieee -mieee-with-inexact -mschedule -mfloat-gprs -mspe -mno-spe 		-mtls-direct-seg-refs -mno-tls-direct-seg-refs -mflat -mno-flat 		-mno-faster-structs -mfaster-structs -m32 -m64 -mx32 -mabi 		-mlittle-endian -mbig-endian -EL -EB -fPIC -mlive-g0 -mcmodel 		-mstack-bias -mno-stack-bias -msecure-plt -m*-toc -D* -U*";
    ALLOWED_FLAGS+=" -mno-fma4 -mno-movbe -mno-xop -mno-lwp";
    ALLOWED_FLAGS+=" -mno-fsgsbase -mno-rdrnd -mno-f16c -mno-bmi -mno-tbm";
    export ALLOWED_FLAGS;
    return 0
}
src_compile ()
{
    kde4-base_src_compile;
    if use doc; then
        einfo "Building API documentation";
        cd "${S}"/doc/api/;
        ./doxygen.sh "${S}" || die "APIDOX generation failed";
    fi
}
src_configure ()
{
    if use zeroconf; then
        if has_version net-dns/avahi; then
            mycmakeargs=(-DWITH_Avahi=ON -DWITH_DNSSD=OFF);
        else
            die "USE=\"zeroconf\" enabled but net-dns/avahi wasn't found.";
        fi;
    else
        mycmakeargs=(-DWITH_Avahi=OFF -DWITH_DNSSD=OFF);
    fi;
    mycmakeargs+=(-DWITH_HSPELL=OFF -DWITH_ASPELL=OFF -DKDE_DEFAULT_HOME=.kde4 -DKAUTH_BACKEND=POLKITQT-1 -DBUILD_libkactivities=OFF $(cmake-utils_use_build handbook doc) $(cmake-utils_use_has 3dnow X86_3DNOW) $(cmake-utils_use_has altivec PPC_ALTIVEC) $(cmake-utils_use_has mmx X86_MMX) $(cmake-utils_use_has sse X86_SSE) $(cmake-utils_use_has sse2 X86_SSE2) $(cmake-utils_use_with acl) $(cmake-utils_use_with alsa) $(cmake-utils_use_with bzip2 BZip2) $(cmake-utils_use_with fam) $(cmake-utils_use_with jpeg2k Jasper) $(cmake-utils_use_with kerberos GSSAPI) $(cmake-utils_use_with lzma LibLZMA) $(cmake-utils_use_with nls Libintl) $(cmake-utils_use_with openexr OpenEXR) $(cmake-utils_use_with opengl OpenGL) $(cmake-utils_use_with policykit PolkitQt-1) $(cmake-utils_use_with semantic-desktop Soprano) $(cmake-utils_use_with semantic-desktop SharedDesktopOntologies) $(cmake-utils_use_with spell ENCHANT) $(cmake-utils_use_with ssl OpenSSL) $(cmake-utils_use_with udev UDev) $(cmake-utils_use_with upnp HUpnp));
    kde4-base_src_configure
}
src_install ()
{
    kde4-base_src_install;
    rm -f "${ED}"/usr/share/apps/kssl/ca-bundle.crt || die;
    dosym /etc/ssl/certs/ca-certificates.crt /usr/share/apps/kssl/ca-bundle.crt;
    if use doc; then
        einfo "Installing API documentation. This could take a bit of time.";
        cd "${S}"/doc/api/;
        docinto /HTML/en/kdelibs-apidox;
        dohtml -r ${P}-apidocs/*;
    fi;
    if use aqua; then
        einfo "fixing ${PN} plugins";
        local _PV=${PV:0:3}.0;
        local _dir=${EPREFIX}/usr/$(get_libdir)/kde4/plugins/script;
        install_name_tool -id "${_dir}/libkrossqtsplugin.${_PV}.dylib" "${D}/${_dir}/libkrossqtsplugin.${_PV}.dylib" || die "failed fixing libkrossqtsplugin.${_PV}.dylib";
        einfo "fixing ${PN} cmake detection files";
        echo -e "set(XKB_FOUND FALSE)\nset(HAVE_XKB FALSE)" > "${ED}"/usr/share/apps/cmake/modules/FindXKB.cmake || die "failed fixing FindXKB.cmake";
    fi;
    einfo Installing environment file.;
    echo "COLON_SEPARATED=QT_PLUGIN_PATH" > "${T}/77kde";
    echo "QT_PLUGIN_PATH=${EPREFIX}/usr/$(get_libdir)/kde4/plugins" >> "${T}/77kde";
    doenvd "${T}/77kde"
}
src_prepare ()
{
    kde4-base_src_prepare;
    use arm && epatch "${FILESDIR}/${PN}-4.6.2-armlinking.patch";
    sed -e 's|FILES[[:space:]]applications.menu|FILES applications.menu RENAME kde-4-applications.menu|g' -i kded/CMakeLists.txt || die "Sed on CMakeLists.txt for applications.menu failed.";
    if use aqua; then
        sed -i -e "s:BUNDLE_INSTALL_DIR \"/Applications:BUNDLE_INSTALL_DIR \"${EPREFIX}/${APP_BUNDLE_DIR}:g" cmake/modules/FindKDE4Internal.cmake || die "failed to sed FindKDE4Internal.cmake";
        sed -i -e "s:set(_add_executable_param MACOSX_BUNDLE):remove(_add_executable_param MACOSX_BUNDLE):g" cmake/modules/KDE4Macros.cmake || die "failed to sed KDE4Macros.cmake";
        sed -e "s|\(APPLE\)|(FALSE)|g" -i solid/solid/CMakeLists.txt || die "disabling solid/solid/backends/iokit failed";
        sed -e "s|m_backend = .*Backends::IOKit.*;|m_backend = 0;|g" -i solid/solid/managerbase.cpp || die "disabling solid/solid/backends/iokit failed";
        sed -e "/HAVE_FDATASYNC/ d" -i config.h.cmake || die "disabling fdatasync failed";
        sed -e "s|nameser8_compat.h|nameser_compat.h|g" -i kio/misc/kpac/discovery.cpp || die "fixing nameser include failed";
        append-flags -DHAVE_ARPA_NAMESER8_COMPAT_H=1;
        epatch "${FILESDIR}"/${PN}-4.3.80-kdeui_util_kkeyserver_mac.patch;
    fi;
    if [[ ${CHOST} == *-solaris* ]]; then
        epatch "${FILESDIR}/kdelibs-4.3.2-solaris-ksyscoca.patch";
        epatch "${FILESDIR}/kdelibs-4.3.2-solaris-getgrouplist.patch";
        epatch "${FILESDIR}/kdelibs-4.3.2-solaris-fileunix.patch";
    fi
}
src_test ()
{
    kde4-base_src_test "$@"
}
src_unpack ()
{
    kde4-base_src_unpack "$@"
}
strip-flags ()
{
    local x y var;
    setup-allowed-flags;
    set -f;
    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;
        if _is_flagq ${var} "-O*" && ! _is_flagq new "-O*"; then
            new+=(-O2);
        fi;
        eval export ${var}=\""${new[*]}"\";
    done;
    set +f;
    return 0
}
strip-linguas ()
{
    local ls newls nols;
    if [[ $1 == "-i" ]] || [[ $1 == "-u" ]]; then
        local op=$1;
        shift;
        ls=$(find "$1" -name '*.po' -exec basename {} .po ';');
        shift;
        local d f;
        for d in "$@";
        do
            if [[ ${op} == "-u" ]]; then
                newls=${ls};
            else
                newls="";
            fi;
            for f in $(find "$d" -name '*.po' -exec basename {} .po ';');
            do
                if [[ ${op} == "-i" ]]; then
                    has ${f} ${ls} && newls="${newls} ${f}";
                else
                    has ${f} ${ls} || newls="${newls} ${f}";
                fi;
            done;
            ls=${newls};
        done;
    else
        ls="$@";
    fi;
    nols="";
    newls="";
    for f in ${LINGUAS};
    do
        if has ${f} ${ls}; then
            newls="${newls} ${f}";
        else
            nols="${nols} ${f}";
        fi;
    done;
    [[ -n ${nols} ]] && einfo "Sorry, but ${PN} does not support the LINGUAS:" ${nols};
    export LINGUAS=${newls:1}
}
strip-unsupported-flags ()
{
    export CFLAGS=$(test-flags-CC ${CFLAGS});
    export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS});
    export FFLAGS=$(test-flags-F77 ${FFLAGS});
    export FCFLAGS=$(test-flags-FC ${FCFLAGS})
}
tc-arch ()
{
    tc-ninja_magic_to_arch portage "$@"
}
tc-arch-kernel ()
{
    tc-ninja_magic_to_arch kern "$@"
}
tc-endian ()
{
    local host=$1;
    [[ -z ${host} ]] && host=${CTARGET:-${CHOST}};
    host=${host%%-*};
    case ${host} in
        alpha*)
            echo big
        ;;
        arm*b*)
            echo big
        ;;
        arm*)
            echo little
        ;;
        cris*)
            echo little
        ;;
        hppa*)
            echo big
        ;;
        i?86*)
            echo little
        ;;
        ia64*)
            echo little
        ;;
        m68*)
            echo big
        ;;
        mips*l*)
            echo little
        ;;
        mips*)
            echo big
        ;;
        powerpc*)
            echo big
        ;;
        s390*)
            echo big
        ;;
        sh*b*)
            echo big
        ;;
        sh*)
            echo little
        ;;
        sparc*)
            echo big
        ;;
        x86_64*)
            echo little
        ;;
        *)
            echo wtf
        ;;
    esac
}
tc-env_build ()
{
    CFLAGS=${BUILD_CFLAGS:--O1 -pipe} CXXFLAGS=${BUILD_CXXFLAGS:--O1 -pipe} CPPFLAGS=${BUILD_CPPFLAGS} LDFLAGS=${BUILD_LDFLAGS} AR=$(tc-getBUILD_AR) AS=$(tc-getBUILD_AS) CC=$(tc-getBUILD_CC) CPP=$(tc-getBUILD_CPP) CXX=$(tc-getBUILD_CXX) LD=$(tc-getBUILD_LD) NM=$(tc-getBUILD_NM) PKG_CONFIG=$(tc-getBUILD_PKG_CONFIG) RANLIB=$(tc-getBUILD_RANLIB) "$@"
}
tc-export ()
{
    local var;
    for var in "$@";
    do
        [[ $(type -t tc-get${var}) != "function" ]] && die "tc-export: invalid export variable '${var}'";
        eval tc-get${var} > /dev/null;
    done
}
tc-getAR ()
{
    tc-getPROG AR ar "$@"
}
tc-getAS ()
{
    tc-getPROG AS as "$@"
}
tc-getBUILD_AR ()
{
    tc-getBUILD_PROG AR ar "$@"
}
tc-getBUILD_AS ()
{
    tc-getBUILD_PROG AS as "$@"
}
tc-getBUILD_CC ()
{
    tc-getBUILD_PROG CC gcc "$@"
}
tc-getBUILD_CPP ()
{
    tc-getBUILD_PROG CPP cpp "$@"
}
tc-getBUILD_CXX ()
{
    tc-getBUILD_PROG CXX g++ "$@"
}
tc-getBUILD_LD ()
{
    tc-getBUILD_PROG LD ld "$@"
}
tc-getBUILD_NM ()
{
    tc-getBUILD_PROG NM nm "$@"
}
tc-getBUILD_OBJCOPY ()
{
    tc-getBUILD_PROG OBJCOPY objcopy "$@"
}
tc-getBUILD_PKG_CONFIG ()
{
    tc-getBUILD_PROG PKG_CONFIG pkg-config "$@"
}
tc-getBUILD_PROG ()
{
    _tc-getPROG CBUILD "BUILD_$1 $1_FOR_BUILD HOST$1" "${@:2}"
}
tc-getBUILD_RANLIB ()
{
    tc-getBUILD_PROG RANLIB ranlib "$@"
}
tc-getBUILD_STRIP ()
{
    tc-getBUILD_PROG STRIP strip "$@"
}
tc-getCC ()
{
    tc-getPROG CC gcc "$@"
}
tc-getCPP ()
{
    tc-getPROG CPP cpp "$@"
}
tc-getCXX ()
{
    tc-getPROG CXX g++ "$@"
}
tc-getDLLWRAP ()
{
    tc-getPROG DLLWRAP dllwrap "$@"
}
tc-getF77 ()
{
    tc-getPROG F77 gfortran "$@"
}
tc-getFC ()
{
    tc-getPROG FC gfortran "$@"
}
tc-getGCJ ()
{
    tc-getPROG GCJ gcj "$@"
}
tc-getLD ()
{
    tc-getPROG LD ld "$@"
}
tc-getNM ()
{
    tc-getPROG NM nm "$@"
}
tc-getOBJCOPY ()
{
    tc-getPROG OBJCOPY objcopy "$@"
}
tc-getPKG_CONFIG ()
{
    tc-getPROG PKG_CONFIG pkg-config "$@"
}
tc-getPROG ()
{
    _tc-getPROG CHOST "$@"
}
tc-getRANLIB ()
{
    tc-getPROG RANLIB ranlib "$@"
}
tc-getRC ()
{
    tc-getPROG RC windres "$@"
}
tc-getSTRIP ()
{
    tc-getPROG STRIP strip "$@"
}
tc-has-openmp ()
{
    local base="${T}/test-tc-openmp";
    cat > "${base}.c"  <<-EOF
#include <omp.h>
int main() {
int nthreads, tid, ret = 0;
#pragma omp parallel private(nthreads, tid)
{
tid = omp_get_thread_num();
nthreads = omp_get_num_threads(); ret += tid + nthreads;
}
return ret;
}
EOF

    $(tc-getCC "$@") -fopenmp "${base}.c" -o "${base}" &>/dev/null;
    local ret=$?;
    rm -f "${base}"*;
    return ${ret}
}
tc-has-tls ()
{
    local base="${T}/test-tc-tls";
    cat > "${base}.c"  <<-EOF
int foo(int *i) {
static __thread int j = 0;
return *i ? j : *i;
}
EOF

    local flags;
    case $1 in
        -s)
            flags="-S"
        ;;
        -c)
            flags="-c"
        ;;
        -l)

        ;;
        -*)
            die "Usage: tc-has-tls [-c|-l] [toolchain prefix]"
        ;;
    esac;
    : ${flags:=-fPIC -shared -Wl,-z,defs};
    [[ $1 == -* ]] && shift;
    $(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" &>/dev/null;
    local ret=$?;
    rm -f "${base}"*;
    return ${ret}
}
tc-is-cross-compiler ()
{
    return $([[ ${CBUILD:-${CHOST}} != ${CHOST} ]])
}
tc-is-hardfloat ()
{
    [[ ${CTARGET//_/-} == *-hardfloat-* ]] && echo "yes" || echo "no"
}
tc-is-softfloat ()
{
    local CTARGET=${CTARGET:-${CHOST}};
    case ${CTARGET} in
        bfin* | h8300*)
            echo "only"
        ;;
        *)
            [[ ${CTARGET//_/-} == *-softfloat-* ]] && echo "yes" || echo "no"
        ;;
    esac
}
tc-is-static-only ()
{
    local host=${CTARGET:-${CHOST}};
    return $([[ ${host} == *-mint* ]])
}
tc-ninja_magic_to_arch ()
{
    function ninj ()
    {
        [[ ${type} == "kern" ]] && echo $1 || echo $2
    };
    local type=$1;
    local host=$2;
    [[ -z ${host} ]] && host=${CTARGET:-${CHOST}};
    case ${host} in
        alpha*)
            echo alpha
        ;;
        arm*)
            echo arm
        ;;
        avr*)
            ninj avr32 avr
        ;;
        bfin*)
            ninj blackfin bfin
        ;;
        cris*)
            echo cris
        ;;
        hppa*)
            ninj parisc hppa
        ;;
        i?86*)
            if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -lt $(KV_to_int 2.6.24) || ${host} == *freebsd* ]]; then
                echo i386;
            else
                echo x86;
            fi
        ;;
        ia64*)
            echo ia64
        ;;
        m68*)
            echo m68k
        ;;
        mips*)
            echo mips
        ;;
        nios2*)
            echo nios2
        ;;
        nios*)
            echo nios
        ;;
        powerpc*)
            if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]]; then
                echo powerpc;
            else
                if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -eq $(KV_to_int 2.6.15) ]]; then
                    if [[ ${host} == powerpc64* ]] || [[ ${PROFILE_ARCH} == "ppc64" ]]; then
                        echo powerpc;
                    else
                        echo ppc;
                    fi;
                else
                    if [[ ${host} == powerpc64* ]]; then
                        echo ppc64;
                    else
                        if [[ ${PROFILE_ARCH} == "ppc64" ]]; then
                            ninj ppc64 ppc;
                        else
                            echo ppc;
                        fi;
                    fi;
                fi;
            fi
        ;;
        s390*)
            echo s390
        ;;
        sh64*)
            ninj sh64 sh
        ;;
        sh*)
            echo sh
        ;;
        sparc64*)
            ninj sparc64 sparc
        ;;
        sparc*)
            [[ ${PROFILE_ARCH} == "sparc64" ]] && ninj sparc64 sparc || echo sparc
        ;;
        vax*)
            echo vax
        ;;
        x86_64*freebsd*)
            echo amd64
        ;;
        x86_64*)
            if [[ ${type} == "kern" ]] && [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.24) ]]; then
                echo x86;
            else
                ninj x86_64 amd64;
            fi
        ;;
        *)
            echo unknown
        ;;
    esac
}
test-flag-CC ()
{
    test-flag-PROG "CC" "$1"
}
test-flag-CXX ()
{
    test-flag-PROG "CXX" "$1"
}
test-flag-F77 ()
{
    test-flag-PROG "F77" "$1"
}
test-flag-FC ()
{
    test-flag-PROG "FC" "$1"
}
test-flag-PROG ()
{
    local comp=$1;
    local flag=$2;
    [[ -z ${comp} || -z ${flag} ]] && return 1;
    local PROG=$(tc-get${comp});
    ${PROG} "${flag}" -c -o /dev/null -xc /dev/null > /dev/null 2>&1
}
test-flags ()
{
    test-flags-CC "$@"
}
test-flags-CC ()
{
    test-flags-PROG "CC" "$@"
}
test-flags-CXX ()
{
    test-flags-PROG "CXX" "$@"
}
test-flags-F77 ()
{
    test-flags-PROG "F77" "$@"
}
test-flags-FC ()
{
    test-flags-PROG "FC" "$@"
}
test-flags-PROG ()
{
    local comp=$1;
    local flags;
    local x;
    shift;
    [[ -z ${comp} ]] && return 1;
    for x in "$@";
    do
        test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}";
    done;
    echo "${flags}";
    [[ -n ${flags} ]]
}
test_version_info ()
{
    if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
        return 0;
    else
        return 1;
    fi
}
use_if_iuse ()
{
    in_iuse $1 || return 1;
    use $1
}
usex ()
{
    use "$1" && echo "${2-yes}$4" || echo "${3-no}$5"
}
validate_desktop_entries ()
{
    if [[ -x /usr/bin/desktop-file-validate ]]; then
        einfo "Checking desktop entry validity";
        local directories="";
        for d in /usr/share/applications $@;
        do
            [[ -d ${D}${d} ]] && directories="${directories} ${D}${d}";
        done;
        if [[ -n ${directories} ]]; then
            for FILE in $(find ${directories} -name "*\.desktop" 							-not -path '*.hidden*' | sort -u 2>/dev/null);
            do
                local temp=$(desktop-file-validate ${FILE} | grep -v "warning:" | 								sed -e "s|error: ||" -e "s|${FILE}:|--|g" );
                [[ -n $temp ]] && elog ${temp/--/${FILE/${D}/}:};
            done;
        fi;
        echo "";
    else
        einfo "Passing desktop entry validity check. Install dev-util/desktop-file-utils, if you want to help to improve Gentoo.";
    fi
}
version_compare ()
{
    eshopts_push -s extglob;
    local ver_a=${1} ver_b=${2} parts_a parts_b;
    local cur_tok_a cur_tok_b num_part_a num_part_b;
    local -i cur_idx_a=0 cur_idx_b=0 prev_idx_a prev_idx_b;
    parts_a=($(get_all_version_components "${ver_a}" ));
    parts_b=($(get_all_version_components "${ver_b}" ));
    local -i inf_loop=0;
    while true; do
        inf_loop+=1;
        ((inf_loop > 20)) && die "versionator compare bug [numbers, ${ver_a}, ${ver_b}]";
        prev_idx_a=cur_idx_a;
        prev_idx_b=cur_idx_b;
        cur_tok_a=${parts_a[cur_idx_a]};
        cur_tok_b=${parts_b[cur_idx_b]};
        if [[ -n ${cur_tok_a} ]] && [[ -z ${cur_tok_a//[[:digit:]]} ]]; then
            cur_idx_a+=1;
            [[ ${parts_a[cur_idx_a]} == . ]] && cur_idx_a+=1;
        else
            cur_tok_a=;
        fi;
        if [[ -n ${cur_tok_b} ]] && [[ -z ${cur_tok_b//[[:digit:]]} ]]; then
            cur_idx_b+=1;
            [[ ${parts_b[cur_idx_b]} == . ]] && cur_idx_b+=1;
        else
            cur_tok_b=;
        fi;
        [[ -z ${cur_tok_a} && -z ${cur_tok_b} ]] && break;
        [[ -z ${cur_tok_a} ]] && eshopts_pop && return 1;
        [[ -z ${cur_tok_b} ]] && eshopts_pop && return 3;
        if (( prev_idx_a != 0 && prev_idx_b != 0 )) && [[ ${cur_tok_a} == 0* || ${cur_tok_b} == 0* ]]; then
            cur_tok_a=${cur_tok_a%%+(0)};
            cur_tok_b=${cur_tok_b%%+(0)};
            [[ ${cur_tok_a} < ${cur_tok_b} ]] && eshopts_pop && return 1;
            [[ ${cur_tok_a} > ${cur_tok_b} ]] && eshopts_pop && return 3;
        else
            cur_tok_a=${cur_tok_a##+(0)};
            cur_tok_b=${cur_tok_b##+(0)};
            : ${cur_tok_a:=0};
            : ${cur_tok_b:=0};
            ((cur_tok_a < cur_tok_b)) && eshopts_pop && return 1;
            ((cur_tok_a > cur_tok_b)) && eshopts_pop && return 3;
        fi;
    done;
    local letter_a=;
    letter_a=${parts_a[cur_idx_a]};
    if [[ ${#letter_a} -eq 1 && -z ${letter_a/[a-z]} ]]; then
        cur_idx_a+=1;
    else
        letter_a=@;
    fi;
    local letter_b=;
    letter_b=${parts_b[cur_idx_b]};
    if [[ ${#letter_b} -eq 1 && -z ${letter_b/[a-z]} ]]; then
        cur_idx_b+=1;
    else
        letter_b=@;
    fi;
    [[ ${letter_a} < ${letter_b} ]] && eshopts_pop && return 1;
    [[ ${letter_a} > ${letter_b} ]] && eshopts_pop && return 3;
    inf_loop=0;
    while true; do
        inf_loop+=1;
        ((inf_loop > 20)) && die "versionator compare bug [numbers, ${ver_a}, ${ver_b}]";
        [[ ${parts_a[cur_idx_a]} == _ ]] && ((cur_idx_a++));
        [[ ${parts_b[cur_idx_b]} == _ ]] && ((cur_idx_b++));
        cur_tok_a=${parts_a[cur_idx_a]};
        cur_tok_b=${parts_b[cur_idx_b]};
        num_part_a=0;
        num_part_b=0;
        if has ${cur_tok_a%%+([0-9])} "alpha" "beta" "pre" "rc" "p"; then
            cur_idx_a+=1;
            num_part_a=${cur_tok_a##+([a-z])};
            num_part_a=${num_part_a##+(0)};
            : ${num_part_a:=0};
            cur_tok_a=${cur_tok_a%%+([0-9])};
        else
            cur_tok_a=;
        fi;
        if has ${cur_tok_b%%+([0-9])} alpha beta pre rc p; then
            cur_idx_b+=1;
            num_part_b=${cur_tok_b##+([a-z])};
            num_part_b=${num_part_b##+(0)};
            : ${num_part_b:=0};
            cur_tok_b=${cur_tok_b%%+([0-9])};
        else
            cur_tok_b=;
        fi;
        if [[ ${cur_tok_a} != ${cur_tok_b} ]]; then
            local suffix;
            for suffix in alpha beta pre rc "" p;
            do
                [[ ${cur_tok_a} == ${suffix} ]] && eshopts_pop && return 1;
                [[ ${cur_tok_b} == ${suffix} ]] && eshopts_pop && return 3;
            done;
        else
            if [[ -z ${cur_tok_a} && -z ${cur_tok_b} ]]; then
                break;
            else
                ((num_part_a < num_part_b)) && eshopts_pop && return 1;
                ((num_part_a > num_part_b)) && eshopts_pop && return 3;
            fi;
        fi;
    done;
    [[ ${parts_a[cur_idx_a]} == - ]] && ((cur_idx_a++));
    [[ ${parts_b[cur_idx_b]} == - ]] && ((cur_idx_b++));
    if [[ -n ${parts_a[cur_idx_a]/r+([0-9])} || -n ${parts_b[cur_idx_b]/r+([0-9])} ]]; then
        die "versionator compare bug [revisions, ${ver_a}, ${ver_b}]";
    fi;
    num_part_a=${parts_a[cur_idx_a]#r};
    num_part_a=${num_part_a##+(0)};
    : ${num_part_a:=0};
    num_part_b=${parts_b[cur_idx_b]#r};
    num_part_b=${num_part_b##+(0)};
    : ${num_part_b:=0};
    ((num_part_a < num_part_b)) && eshopts_pop && return 1;
    ((num_part_a > num_part_b)) && eshopts_pop && return 3;
    eshopts_pop;
    return 2
}
version_format_string ()
{
    local fstr=$1;
    shift;
    set -- $(get_version_components "$@");
    eval echo "${fstr}"
}
version_is_at_least ()
{
    local want_s="$1" have_s="${2:-${PVR}}" r;
    version_compare "${want_s}" "${have_s}";
    r=$?;
    case $r in
        1 | 2)
            return 0
        ;;
        3)
            return 1
        ;;
        *)
            die "versionator compare bug [atleast, ${want_s}, ${have_s}, ${r}]"
        ;;
    esac
}
version_sort ()
{
    eshopts_push -s extglob;
    local items=;
    local -i left=0;
    items=("$@");
    while ((left < ${#items[@]})); do
        local -i lowest_idx=left;
        local -i idx=lowest_idx+1;
        while ((idx < ${#items[@]})); do
            version_compare "${items[lowest_idx]}" "${items[idx]}";
            [[ $? -eq 3 ]] && lowest_idx=idx;
            idx+=1;
        done;
        local tmp=${items[lowest_idx]};
        items[lowest_idx]=${items[left]};
        items[left]=${tmp};
        left+=1;
    done;
    echo ${items[@]};
    eshopts_pop
}
virtualmake ()
{
    debug-print-function ${FUNCNAME} "$@";
    local i=0;
    local retval=0;
    local OLD_SANDBOX_ON="${SANDBOX_ON}";
    local XVFB=$(type -p Xvfb);
    local XHOST=$(type -p xhost);
    local xvfbargs="-screen 0 800x600x24";
    if [[ -n ${maketype} ]]; then
        ewarn "QA: ebuild is exporting \$maketype=${maketype}";
        ewarn "QA: Ebuild should be migrated to use VIRTUALX_COMMAND=${maketype} instead.";
        ewarn "QA: Setting VIRTUALX_COMMAND to \$maketype conveniently for now.";
        VIRTUALX_COMMAND=${maketype};
    fi;
    if [[ -n ${XVFB} && -n ${XHOST} ]] && ( [[ -z ${DISPLAY} ]] || ! ( ${XHOST} &>/dev/null ) ); then
        debug-print "${FUNCNAME}: running Xvfb hack";
        export XAUTHORITY=;
        einfo "Scanning for an open DISPLAY to start Xvfb ...";
        XDISPLAY=$(i=0; while [[ -f /tmp/.X${i}-lock ]] ; do ((i++));done; echo ${i});
        debug-print "${FUNCNAME}: XDISPLAY=${XDISPLAY}";
        export SANDBOX_ON="0";
        debug-print "${FUNCNAME}: ${XVFB} :${XDISPLAY} ${xvfbargs}";
        ${XVFB} :${XDISPLAY} ${xvfbargs} &>/dev/null & sleep 2;
        local start=${XDISPLAY};
        while [[ ! -f /tmp/.X${XDISPLAY}-lock ]]; do
            if ((XDISPLAY - start > 15)); then
                eerror "'${XVFB} :${XDISPLAY} ${xvfbargs}' returns:";
                echo;
                ${XVFB} :${XDISPLAY} ${xvfbargs};
                echo;
                eerror "If possible, correct the above error and try your emerge again.";
                die "Unable to start Xvfb";
            fi;
            ((XDISPLAY++));
            debug-print "${FUNCNAME}: ${XVFB} :${XDISPLAY} ${xvfbargs}";
            ${XVFB} :${XDISPLAY} ${xvfbargs} &>/dev/null & sleep 2;
        done;
        export SANDBOX_ON="${OLD_SANDBOX_ON}";
        einfo "Starting Xvfb on \$DISPLAY=${XDISPLAY} ...";
        export DISPLAY=:${XDISPLAY};
        debug-print "${FUNCNAME}: ${VIRTUALX_COMMAND} \"$@\"";
        ${VIRTUALX_COMMAND} "$@";
        retval=$?;
        kill $(cat /tmp/.X${XDISPLAY}-lock);
    else
        debug-print "${FUNCNAME}: attaching to running X display";
        debug-print "${FUNCNAME}: ${VIRTUALX_COMMAND} \"$@\"";
        ${VIRTUALX_COMMAND} "$@";
        retval=$?;
    fi;
    [[ ${retval} -ne 0 ]] && die "${FUNCNAME}: the ${VIRTUALX_COMMAND} failed.";
    return 0
}