| 1 | #!/bin/bash -x |
| 2 | |
| 3 | if [ $# -ne 5 ]; then |
| 4 | echo "Usage: $0 <archs> <variants> <outputdir> <sdkroot> <srcroot>" 1>&2 |
| 5 | exit 1 |
| 6 | fi |
| 7 | |
| 8 | shopt -s nullglob |
| 9 | |
| 10 | ARCHS="$1" |
| 11 | VARIANTS="$2" |
| 12 | OUTPUTDIR="$3" |
| 13 | SDKROOT="$4" |
| 14 | SRCROOT="$5" |
| 15 | |
| 16 | LIBSYS="${SDKROOT}/${SDK_INSTALL_ROOT}/usr/local/lib/system" |
| 17 | LSYS="${SDKROOT}/${SDK_INSTALL_ROOT}/usr/lib/system" |
| 18 | |
| 19 | mkdir -p "${OUTPUTDIR}" |
| 20 | |
| 21 | for arch in ${ARCHS}; do |
| 22 | for variant in ${VARIANTS}; do |
| 23 | OUTPUTFILE="${OUTPUTDIR}/linker_arguments.${arch}.${variant}.txt" |
| 24 | OUTPUTCONFIG="${OUTPUTDIR}/config.${arch}.${variant}.h" |
| 25 | TEMPDIR="${OUTPUTDIR}/linker_arguments_tmp" |
| 26 | |
| 27 | SDK_INSTALL_VARIANT="${DRIVERKIT:+_driverkit}" |
| 28 | |
| 29 | # Unwinding i386 dependencies. |
| 30 | # there are no more "real" uses of i386 Libsystem, only dependency |
| 31 | # cycles from within the umbrella (plus libobjc and libc++). |
| 32 | # We will remove non-critical dylibs (that have no real dependents |
| 33 | # anymore) from the umbrella to decrease the overall size of the |
| 34 | # i386 umbrella. |
| 35 | # (Note that there is no i386 driverkit so this does not conflict |
| 36 | # with the preceding rule) |
| 37 | if [ "$arch" = "i386" ]; then |
| 38 | SDK_INSTALL_VARIANT="_i386" |
| 39 | fi |
| 40 | |
| 41 | mkdir -p "${TEMPDIR}" |
| 42 | |
| 43 | ACTUALLIBS="${TEMPDIR}/${arch}.${variant}.actuallibs" |
| 44 | ALLLIBS="${TEMPDIR}/${arch}.${variant}.alllibs" |
| 45 | FROMUSRLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.fromusrlibsystem" |
| 46 | FROMUSRLOCALLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.fromusrlocallibsystem" |
| 47 | INUSRLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.inusrlibsystem" |
| 48 | INUSRLOCALLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.inusrlocallibsystem" |
| 49 | MISSINGLIBS="${TEMPDIR}/${arch}.${variant}.missinglibs" |
| 50 | POSSIBLEUSRLOCALLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.possibleusrlocallibsystem" |
| 51 | OPTIONALLIBS="${SRCROOT}/optionallibs${SDK_INSTALL_VARIANT}" |
| 52 | REQUIREDLIBS="${SRCROOT}/requiredlibs${SDK_INSTALL_VARIANT}" |
| 53 | |
| 54 | if [ ${variant} = "normal" ]; then |
| 55 | SUFFIX="" |
| 56 | else |
| 57 | SUFFIX="_${variant}" |
| 58 | fi |
| 59 | |
| 60 | rm -f "${OUTPUTFILE}" |
| 61 | |
| 62 | cat ${REQUIREDLIBS} ${OPTIONALLIBS} | sort > ${ALLLIBS} |
| 63 | |
| 64 | # Strip away variant information to do presence checks |
| 65 | # non-normal variants can always link against normal clients |
| 66 | cd ${LSYS} && ls lib*.{dylib,tbd,api,spi} | sed -E -e 's/_(debug|profile|static)\././' | while read l; do |
| 67 | if [ "${l: -6}" == ".dylib" ]; then |
| 68 | xcrun -sdk "${SDKROOT}" lipo "${LSYS}/${l}" -verify_arch "${arch}" 2>/dev/null |
| 69 | else |
| 70 | xcrun -sdk "${SDKROOT}" tapi archive "${LSYS}/${l}" --verify-arch "${arch}" 2>/dev/null |
| 71 | fi |
| 72 | if [ $? -eq 0 ]; then |
| 73 | echo "${l}" |
| 74 | fi |
| 75 | done | sed -E -e 's/^lib//' -e 's/\..*$$//' | sort -u > ${INUSRLIBSYSTEM} |
| 76 | [ -d ${LIBSYS} ] && cd ${LIBSYS} && ls lib*.a | sed -E -e 's/_(debug|profile|static)\././' | while read l; do |
| 77 | xcrun -sdk "${SDKROOT}" lipo "${LIBSYS}/${l}" -verify_arch "${arch}" 2>/dev/null |
| 78 | if [ $? -eq 0 ]; then |
| 79 | echo "${l}" |
| 80 | fi |
| 81 | done | sed -E -e 's/^lib//' -e 's/\..*$$//' | sort -u > ${INUSRLOCALLIBSYSTEM} |
| 82 | |
| 83 | while read line ; do |
| 84 | for lib in ${line} ; do |
| 85 | egrep "^${lib}$" ${INUSRLIBSYSTEM} && break |
| 86 | done |
| 87 | done < ${ALLLIBS} > ${FROMUSRLIBSYSTEM} |
| 88 | |
| 89 | while read line ; do |
| 90 | for lib in ${line} ; do |
| 91 | egrep -q "^${lib}$" ${INUSRLIBSYSTEM} && break |
| 92 | egrep "^${lib}$" ${INUSRLOCALLIBSYSTEM} && break |
| 93 | done |
| 94 | done < ${ALLLIBS} > ${POSSIBLEUSRLOCALLIBSYSTEM} |
| 95 | |
| 96 | comm -13 ${FROMUSRLIBSYSTEM} ${POSSIBLEUSRLOCALLIBSYSTEM} > ${FROMUSRLOCALLIBSYSTEM} |
| 97 | cat ${FROMUSRLIBSYSTEM} ${FROMUSRLOCALLIBSYSTEM} | sort > ${ACTUALLIBS} |
| 98 | |
| 99 | while read line ; do |
| 100 | found=0 |
| 101 | for lib in ${line} ; do |
| 102 | egrep -q "^${lib}$" ${ACTUALLIBS} && found=1 |
| 103 | done |
| 104 | [[ $found == 0 ]] && echo ${line} |
| 105 | done < ${REQUIREDLIBS} > ${MISSINGLIBS} |
| 106 | |
| 107 | if [ -s ${MISSINGLIBS} ]; then |
| 108 | echo '*** missing required libs ***' |
| 109 | cat ${MISSINGLIBS} |
| 110 | exit 1 |
| 111 | fi |
| 112 | |
| 113 | cat ${FROMUSRLIBSYSTEM} | while read lib; do |
| 114 | echo "#define HAVE_"$(echo "${lib/_sim/}" | tr 'a-z' 'A-Z')" 1" |
| 115 | done >> "${OUTPUTCONFIG}" |
| 116 | |
| 117 | cat ${FROMUSRLIBSYSTEM} | while read lib; do |
| 118 | echo "-Wl,-reexport-l${lib}" |
| 119 | done >> "${OUTPUTFILE}" |
| 120 | |
| 121 | # Allow static archives to degrade to their non-variant versions |
| 122 | cat ${FROMUSRLOCALLIBSYSTEM} | while read lib; do |
| 123 | LPATH="${LIBSYS}/lib${lib}${SUFFIX}.a" |
| 124 | xcrun -sdk "${SDKROOT}" lipo "${LPATH}" -verify_arch "${arch}" 2>/dev/null |
| 125 | if [ $? -ne 0 ]; then |
| 126 | LPATH="${LIBSYS}/lib${lib}.a" |
| 127 | fi |
| 128 | echo "-Wl,-force_load,${LPATH}" |
| 129 | done >> "${OUTPUTFILE}" |
| 130 | |
| 131 | echo "Final contents of ${OUTPUTFILE}:" |
| 132 | cat "${OUTPUTFILE}" |
| 133 | done |
| 134 | done |
| 135 | |
| 136 | MARKERFILE="${OUTPUTDIR}/linker_arguments_changed.c" |
| 137 | |
| 138 | for arch in ${ARCHS}; do |
| 139 | for variant in ${VARIANTS}; do |
| 140 | OUTPUTFILE="${OUTPUTDIR}/linker_arguments.${arch}.${variant}.txt" |
| 141 | cat "${OUTPUTFILE}" |
| 142 | done |
| 143 | done | shasum | sed 's,^,// ,' > "${MARKERFILE}" |
| 144 | |
| 145 | exit 0 |