install-reloc: Support multi-binary installation.

[gnulib.git] / m4 / ld-version-script.m4

diff --git a/m4/ld-version-script.m4 b/m4/ld-version-script.m4
index e321347..63386f1 100644 (file)
--- a/m4/ld-version-script.m4
+++ b/m4/ld-version-script.m4
@@ -1,11 +1,16 @@
-# ld-version-script.m4 serial 1
-dnl Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+# ld-version-script.m4 serial 3
+dnl Copyright (C) 2008-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
 dnl From Simon Josefsson
 
+# FIXME: The test below returns a false positive for mingw
+# cross-compiles, 'local:' statements does not reduce number of
+# exported symbols in a DLL.  Use --disable-ld-version-script to work
+# around the problem.
+
 # gl_LD_VERSION_SCRIPT
 # --------------------
 # Check if LD supports linker scripts, and define automake conditional
@@ -21,16 +26,25 @@ AC_DEFUN([gl_LD_VERSION_SCRIPT],
     save_LDFLAGS="$LDFLAGS"
     LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map"
     cat > conftest.map <<EOF
+foo
+EOF
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
+                   [accepts_syntax_errors=yes], [accepts_syntax_errors=no])
+    if test "$accepts_syntax_errors" = no; then
+      cat > conftest.map <<EOF
 VERS_1 {
-       global: sym;
+        global: sym;
 };
 
 VERS_2 {
         global: sym;
 } VERS_1;
 EOF
-    AC_LINK_IFELSE(AC_LANG_PROGRAM([], []),
-                   [have_ld_version_script=yes], [have_ld_version_script=no])
+      AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
+                     [have_ld_version_script=yes], [have_ld_version_script=no])
+    else
+      have_ld_version_script=no
+    fi
     rm -f conftest.map
     LDFLAGS="$save_LDFLAGS"
     AC_MSG_RESULT($have_ld_version_script)