xcodescripts/linker_arguments.sh

   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 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         OUTPUTCONFIG="${OUTPUTDIR}/config.${arch}.${variant}.h"
  23         TEMPDIR="${OUTPUTDIR}/linker_arguments_tmp"
  24
  25         mkdir -p "${TEMPDIR}"
  26
  27         ACTUALLIBS="${TEMPDIR}/${arch}.${variant}.actuallibs"
  28         ALLLIBS="${TEMPDIR}/${arch}.${variant}.alllibs"
  29         FROMUSRLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.fromusrlibsystem"
  30         FROMUSRLOCALLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.fromusrlocallibsystem"
  31         INUSRLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.inusrlibsystem"
  32         INUSRLOCALLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.inusrlocallibsystem"
  33         MISSINGLIBS="${TEMPDIR}/${arch}.${variant}.missinglibs"
  34         POSSIBLEUSRLOCALLIBSYSTEM="${TEMPDIR}/${arch}.${variant}.possibleusrlocallibsystem"
  35         OPTIONALLIBS="${SRCROOT}/optionallibs"
  36         REQUIREDLIBS="${SRCROOT}/requiredlibs"
  37
  38         if [ ${variant} = "normal" ]; then
  39             SUFFIX=""
  40         else
  41             SUFFIX="_${variant}"
  42         fi
  43
  44         rm -f "${OUTPUTFILE}"
  45
  46         cat ${REQUIREDLIBS} ${OPTIONALLIBS} | sort > ${ALLLIBS}
  47
  48         # Strip away variant information to do presence checks
  49         # non-normal variants can always link against normal clients
  50         cd ${LSYS} && ls lib*.dylib | sed -E -e 's/_(debug|profile|static)\././' | while read l; do
  51             xcrun -sdk "${SDKROOT}" lipo "${LSYS}/${l}" -verify_arch "${arch}" 2>/dev/null
  52             if [ $? -eq 0 ]; then
  53                 echo "${l}"
  54             fi
  55         done | sed -E -e 's/^lib//' -e 's/\..*$$//'  | sort -u > ${INUSRLIBSYSTEM}
  56         cd ${LIBSYS} && ls lib*.a | sed -E -e 's/_(debug|profile|static)\././' | while read l; do
  57             xcrun -sdk "${SDKROOT}" lipo "${LIBSYS}/${l}" -verify_arch "${arch}" 2>/dev/null
  58             if [ $? -eq 0 ]; then
  59                 echo "${l}"
  60             fi
  61         done | sed -E -e 's/^lib//' -e 's/\..*$$//' | sort -u > ${INUSRLOCALLIBSYSTEM}
  62
  63         while read line ; do
  64             for lib in ${line} ; do
  65                 egrep "^${lib}$" ${INUSRLIBSYSTEM} && break
  66             done
  67         done < ${ALLLIBS} > ${FROMUSRLIBSYSTEM}
  68
  69         while read line ; do
  70             for lib in ${line} ; do
  71                 egrep "^${lib}$" ${INUSRLOCALLIBSYSTEM} && break
  72             done
  73         done < ${ALLLIBS} > ${POSSIBLEUSRLOCALLIBSYSTEM}
  74
  75         comm -13 ${FROMUSRLIBSYSTEM} ${POSSIBLEUSRLOCALLIBSYSTEM} > ${FROMUSRLOCALLIBSYSTEM}
  76         cat ${FROMUSRLIBSYSTEM} ${FROMUSRLOCALLIBSYSTEM} | sort > ${ACTUALLIBS}
  77
  78         while read line ; do
  79             found=0
  80             for lib in ${line} ; do
  81                 egrep -q "^${lib}$" ${ACTUALLIBS} && found=1
  82             done
  83             [[ $found == 0 ]] && echo ${line}
  84         done < ${REQUIREDLIBS} > ${MISSINGLIBS}
  85
  86         if [ -s ${MISSINGLIBS} ]; then
  87             echo '*** missing required libs ***'
  88             cat ${MISSINGLIBS}
  89             exit 1
  90         fi
  91
  92         cat ${FROMUSRLIBSYSTEM} | while read lib; do
  93                 echo "#define HAVE_"$(echo "${lib/_sim/}" | tr 'a-z' 'A-Z')" 1"
  94         done >> "${OUTPUTCONFIG}"
  95
  96         cat ${FROMUSRLIBSYSTEM} | while read lib; do
  97             echo "-Wl,-reexport-l${lib}"
  98         done >> "${OUTPUTFILE}"
  99
 100         # Allow static archives to degrade to their non-variant versions
 101         cat ${FROMUSRLOCALLIBSYSTEM} | while read lib; do
 102             LPATH="${LIBSYS}/lib${lib}${SUFFIX}.a"
 103             xcrun -sdk "${SDKROOT}" lipo "${LPATH}" -verify_arch "${arch}" 2>/dev/null
 104             if [ $? -ne 0 ]; then
 105                 LPATH="${LIBSYS}/lib${lib}.a"
 106             fi
 107             echo "-Wl,-force_load,${LPATH}"
 108         done >> "${OUTPUTFILE}"
 109
 110         echo "Final contents of ${OUTPUTFILE}:"
 111         cat "${OUTPUTFILE}"
 112     done
 113 done
 114
 115 MARKERFILE="${OUTPUTDIR}/linker_arguments_changed.c"
 116
 117 for arch in ${ARCHS}; do
 118     for variant in ${VARIANTS}; do
 119         OUTPUTFILE="${OUTPUTDIR}/linker_arguments.${arch}.${variant}.txt"
 120         cat "${OUTPUTFILE}"
 121     done
 122 done | shasum | sed 's,^,// ,' > "${MARKERFILE}"
 123
 124 exit 0