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} -c $CFLAGS -fPIC conftest.c])  &&
  20      AC_TRY_COMMAND([${CC-cc} -shared -Wl,--version-script,conftest.map $CFLAGS $LDFLAGS -o libconftestlib.so conftest.o]);
  21   then
  22     rk_cv_version_script=yes
  23   fi
  24 rm -rf conftest* libconftest* .libs
  25 ])
  26
  27 if test $rk_cv_version_script = yes ; then
  28   doversioning=yes
  29   LDFLAGS_VERSION_SCRIPT="-Wl,--version-script,"
  30 else
  31   doversioning=no
  32   LDFLAGS_VERSION_SCRIPT=
  33 fi
  34 AC_SUBST(VERSIONING)
  35
  36 AM_CONDITIONAL(versionscript,test $doversioning = yes)
  37 AC_SUBST(LDFLAGS_VERSION_SCRIPT)
  38
  39 ])