src/tools/darwin_sysroot

   1 #!/bin/sh
   2 #
   3 # Select where system include files should be sought. If the user specified a
   4 # sysroot, validate it.
   5 #
   6 # A separate script so it can be shared between autoconf and meson.
   7
   8 PG_SYSROOT=$1
   9
  10 if test x"$PG_SYSROOT" = x"" ; then
  11   # This is far more complicated than it ought to be.  We first ask
  12   # "xcrun --show-sdk-path", which seems to match the default -isysroot
  13   # setting of Apple's compilers.
  14   PG_SYSROOT=`xcrun --show-sdk-path 2>/dev/null`
  15   # That may fail, or produce a result that is not version-specific (i.e.,
  16   # just ".../SDKs/MacOSX.sdk").  Using a version-specific sysroot seems
  17   # desirable, so if the path is a non-version-specific symlink, expand it.
  18   if test -L "$PG_SYSROOT"; then
  19     if expr x"$PG_SYSROOT" : '.*[0-9]\.[0-9][^/]*$' >/dev/null ; then : okay
  20     else
  21       PG_SYSROOT=`expr "$PG_SYSROOT" : '\(.*\)/'`/`readlink "$PG_SYSROOT"`
  22     fi
  23   fi
  24   # If there are still not digits in the directory name, try
  25   # "xcrun --sdk macosx --show-sdk-path"; and if that still doesn't work,
  26   # fall back to asking xcodebuild, which is often a good deal slower.
  27   if expr x"$PG_SYSROOT" : '.*[0-9]\.[0-9][^/]*$' >/dev/null ; then : okay
  28   else
  29     PG_SYSROOT=`xcrun --sdk macosx --show-sdk-path 2>/dev/null`
  30     if expr x"$PG_SYSROOT" : '.*[0-9]\.[0-9][^/]*$' >/dev/null ; then : okay
  31     else
  32       PG_SYSROOT=`xcodebuild -version -sdk macosx Path 2>/dev/null`
  33     fi
  34   fi
  35 fi
  36 # Validate the result: if it doesn't point at a directory, ignore it.
  37 if test x"$PG_SYSROOT" != x"" ; then
  38   if test -d "$PG_SYSROOT" ; then
  39     echo $PG_SYSROOT
  40   fi
  41 fi