crypto/dist/heimdal/cf/version-script.m4

   1 dnl check if ld supports --version-script
   2 dnl
   3 AC_DEFUN([rk_VERSIONSCRIPT],[
   4 AC_CACHE_CHECK(for ld --version-script, rk_cv_version_script,[
   5   rk_cv_version_script=no
   6
   7   cat > conftest.map <<EOF
   8 HEIM_GSS_V1 {
   9         global: gss*;
  10 };
  11 HEIM_GSS_V1_1 {
  12         global: gss_init_creds;
  13 } HEIM_GSS_V1;
  14 EOF
  15 cat > conftest.c <<EOF
  16 int gss_init_creds(int foo) { return 0; }
  17 EOF
  18
  19   if AC_TRY_COMMAND([${CC-cc} $CFLAGS $LDFLAGS -shared
  20                                -o conftest.so conftest.c
  21                                -Wl,--version-script,conftest.map]);
  22   then
  23     rk_cv_version_script=yes
  24   fi
  25 rm -f conftest*
  26 ])
  27
  28 if test $rk_cv_version_script = yes ; then
  29   doversioning=yes
  30   LDFLAGS_VERSION_SCRIPT="-Wl,--version-script,"
  31 else
  32   doversioning=no
  33   LDFLAGS_VERSION_SCRIPT=
  34 fi
  35 AC_SUBST(VERSIONING)
  36
  37 AM_CONDITIONAL(versionscript,test $doversioning = yes)
  38 AC_SUBST(LDFLAGS_VERSION_SCRIPT)
  39
  40 ])