Autodetect the availability of -export-dynamic in the linker.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66156 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index e58dc66..44397b8 100644
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -636,9 +636,12 @@
AC_PATH_PROGS(OCAMLDOC, [ocamldoc])
AC_PATH_PROGS(GAS, [gas as])
-dnl Determine if the linker supports the -R option.
+dnl Determine whether the linker supports the -R option.
AC_LINK_USE_R
+dnl Determine whether the linker supports the -export-dynamic option.
+AC_LINK_EXPORT_DYNAMIC
+
dnl Check for libtool and the library that has dlopen function (which must come
dnl before the AC_PROG_LIBTOOL check in order to enable dlopening libraries with
dnl libtool).
@@ -1013,16 +1016,25 @@
AC_MSG_ERROR([Prequisites for bindings not satisfied. Fix them or use configure --disable-bindings.])
fi
-dnl Determine if the compiler supports -fvisibility-inlines-hidden.
+dnl Determine whether the compiler supports -fvisibility-inlines-hidden.
AC_CXX_USE_VISIBILITY_INLINES_HIDDEN
dnl Determine linker rpath flag
-case $llvm_cv_os_type in
- SunOS) RPATH="-Wl,-R" ;;
- *) RPATH="-Wl,-rpath" ;;
-esac
+if test "$llvm_cv_link_use_r" = "yes" ; then
+ RPATH="-Wl,-R"
+else
+ RPATH="-Wl,-rpath"
+fi
AC_SUBST(RPATH)
+dnl Determine linker rdynamic flag
+if test "$llvm_cv_link_use_export_dynamic" = "yes" ; then
+ RDYNAMIC="-Wl,-export-dynamic"
+else
+ RDYNAMIC=""
+fi
+AC_SUBST(RDYNAMIC)
+
dnl===-----------------------------------------------------------------------===
dnl===
dnl=== SECTION 10: Specify the output files and generate it
diff --git a/autoconf/m4/link_options.m4 b/autoconf/m4/link_options.m4
new file mode 100644
index 0000000..66036de
--- /dev/null
+++ b/autoconf/m4/link_options.m4
@@ -0,0 +1,41 @@
+#
+# Determine if the system can handle the -R option being passed to the linker.
+#
+# This macro is specific to LLVM.
+#
+AC_DEFUN([AC_LINK_USE_R],
+[AC_CACHE_CHECK([for compiler -Wl,-R<path> option],[llvm_cv_link_use_r],
+[ AC_LANG_PUSH([C])
+ oldcflags="$CFLAGS"
+ CFLAGS="$CFLAGS -Wl,-R."
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[int main() { return 0; }]])],
+ [llvm_cv_link_use_r=yes],[llvm_cv_link_use_r=no])
+ CFLAGS="$oldcflags"
+ AC_LANG_POP([C])
+])
+if test "$llvm_cv_link_use_r" = yes ; then
+ AC_DEFINE([HAVE_LINK_R],[1],[Define if you can use -Wl,-R. to pass -R. to the linker, in order to add the current directory to the dynamic linker search path.])
+ fi
+])
+
+#
+# Determine if the system can handle the -R option being passed to the linker.
+#
+# This macro is specific to LLVM.
+#
+AC_DEFUN([AC_LINK_EXPORT_DYNAMIC],
+[AC_CACHE_CHECK([for compiler -Wl,-export-dynamic option],
+ [llvm_cv_link_use_export_dynamic],
+[ AC_LANG_PUSH([C])
+ oldcflags="$CFLAGS"
+ CFLAGS="$CFLAGS -Wl,-export-dynamic"
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[int main() { return 0; }]])],
+ [llvm_cv_link_use_export_dynamic=yes],[llvm_cv_link_use_export_dynamic=no])
+ CFLAGS="$oldcflags"
+ AC_LANG_POP([C])
+])
+if test "$llvm_cv_link_use_export_dynamic" = yes ; then
+ AC_DEFINE([HAVE_LINK_EXPORT_DYNAMIC],[1],[Define if you can use -Wl,-export-dynamic.])
+ fi
+])
+
diff --git a/autoconf/m4/link_use_r.m4 b/autoconf/m4/link_use_r.m4
deleted file mode 100644
index 30c964e..0000000
--- a/autoconf/m4/link_use_r.m4
+++ /dev/null
@@ -1,19 +0,0 @@
-#
-# Determine if the system can handle the -R option being passed to the linker.
-#
-# This macro is specific to LLVM.
-#
-AC_DEFUN([AC_LINK_USE_R],
-[AC_CACHE_CHECK([for compiler -Wl,-R<path> option],[llvm_cv_link_use_r],
-[ AC_LANG_PUSH([C])
- oldcflags="$CFLAGS"
- CFLAGS="$CFLAGS -Wl,-R."
- AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[int main() { return 0; }]])],
- [llvm_cv_link_use_r=yes],[llvm_cv_link_use_r=no])
- CFLAGS="$oldcflags"
- AC_LANG_POP([C])
-])
-if test "$llvm_cv_link_use_r" = yes ; then
- AC_DEFINE([HAVE_LINK_R],[1],[Define if you can use -Wl,-R. to pass -R. to the linker, in order to add the current directory to the dynamic linker search path.])
- fi
-])