xcodescripts/linker_arguments.sh

   1 #!/bin/sh -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 ARCHS="$1"
   9 VARIANTS="$2"
  10 OUTPUTDIR="$3"
  11 SDKROOT="$4"
  12 SRCROOT="$5"
  13
  14 LIBSYS="${SDKROOT}/usr/local/lib/system"
  15 LSYS="${SDKROOT}/usr/lib/system"
  16
  17 mkdir -p "${OUTPUTDIR}"
  18
  19 for arch in ${ARCHS}; do
  20     for variant in ${VARIANTS}; do
  21         OUTPUTFILE="${OUTPUTDIR}/linker_arguments.${arch}.${variant}.txt"
  22         TEMPDIR="${OUTPUTDIR}/linker_arguments_tmp"
  23
  24         mkdir -p "${TEMPDIR}"
  25
  26         ACTUALLIBS="${TEMPDIR}/${arch}.${variant}.actuallibs"
  27         ALLLIBS="${TEMPDIR}/${arch}.${variant}.alllibs"
  28         FROMUSRLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.fromusrlibsystem"
  29         FROMUSRLOCALLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.fromusrlocallibsystem"
  30         INUSRLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.inusrlibsystem"
  31         INUSRLOCALLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.inusrlocallibsystem"
  32         MISSINGLIBS="${TEMPDIR}/${arch}.${variant}.missinglibs"
  33         POSSIBLEUSRLOCALLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.possibleusrlocallibsystem"
  34         OPTIONALLIBS="${SRCROOT}/optionallibs"
  35         REQUIREDLIBS="${SRCROOT}/requiredlibs"
  36
  37         if [ ${variant} = "normal" ]; then
  38             SUFFIX=""
  39         else
  40             SUFFIX="_${variant}"
  41         fi
  42
  43         rm -f "${OUTPUTFILE}"
  44
  45         cat ${REQUIREDLIBS} ${OPTIONALLIBS} | sort > ${ALLLIBS}
  46
  47         # Strip away variant information to do presence checks
  48         # non-normal variants can always link against normal clients
  49         cd ${LSYS} && ls lib*.dylib | sed -E -e 's/_(debug|profile|static)\././' | while read l; do
  50             xcrun -sdk "${SDKROOT}" lipo "${LSYS}/${l}" -verify_arch "${arch}" 2>/dev/null
  51             if [ $? -eq 0 ]; then
  52                 echo "${l}"
  53             fi
  54         done | sed -E -e 's/^lib//' -e 's/\..*$$//'  | sort -u > ${INUSRLIBSYSTEM}
  55         cd ${LIBSYS} && ls lib*.a | sed -E -e 's/_(debug|profile|static)\././' | while read l; do
  56             xcrun -sdk "${SDKROOT}" lipo "${LIBSYS}/${l}" -verify_arch "${arch}" 2>/dev/null
  57             if [ $? -eq 0 ]; then
  58                 echo "${l}"
  59             fi
  60         done | sed -E -e 's/^lib//' -e 's/\..*$$//' | sort -u > ${INUSRLOCALLIBSYSTEM}
  61         comm -12 ${ALLLIBS} ${INUSRLIBSYSTEM} > ${FROMUSRLIBSYSTEM}
  62         comm -12 ${ALLLIBS} ${INUSRLOCALLIBSYSTEM} > ${POSSIBLEUSRLOCALLIBSYSTEM}
  63         comm -13 ${FROMUSRLIBSYSTEM} ${POSSIBLEUSRLOCALLIBSYSTEM} > ${FROMUSRLOCALLIBSYSTEM}
  64         cat ${FROMUSRLIBSYSTEM} ${FROMUSRLOCALLIBSYSTEM} | sort > ${ACTUALLIBS}
  65         comm -23 ${REQUIREDLIBS} ${ACTUALLIBS} > ${MISSINGLIBS}
  66
  67         if [ -s ${MISSINGLIBS} ]; then
  68             echo '*** missing required libs ***'
  69             cat ${MISSINGLIBS}
  70             exit 1
  71         fi
  72
  73         cat ${FROMUSRLIBSYSTEM} | while read lib; do
  74             echo "-Wl,-reexport-l${lib}"
  75         done >> "${OUTPUTFILE}"
  76
  77         # Allow static archives to degrade to their non-variant versions
  78         cat ${FROMUSRLOCALLIBSYSTEM} | while read lib; do
  79             LPATH="${LIBSYS}/lib${lib}${SUFFIX}.a"
  80             xcrun -sdk "${SDKROOT}" lipo "${LPATH}" -verify_arch "${arch}" 2>/dev/null
  81             if [ $? -ne 0 ]; then
  82                 LPATH="${LIBSYS}/lib${lib}.a"
  83             fi
  84             echo "-Wl,-force_load,${LPATH}"
  85         done >> "${OUTPUTFILE}"
  86
  87         echo "Final contents of ${OUTPUTFILE}:"
  88         cat "${OUTPUTFILE}"
  89     done
  90 done
  91
  92 MARKERFILE="${OUTPUTDIR}/linker_arguments_changed.c"
  93
  94 for arch in ${ARCHS}; do
  95     for variant in ${VARIANTS}; do
  96         OUTPUTFILE="${OUTPUTDIR}/linker_arguments.${arch}.${variant}.txt"
  97         cat "${OUTPUTFILE}"
  98     done
  99 done | shasum | sed 's,^,// ,' > "${MARKERFILE}"
 100
 101 exit 0