many *.m4 files: improve m4 quoting

[gnulib.git] / m4 / strdup.m4

diff --git a/m4/strdup.m4 b/m4/strdup.m4
index 42325ab..d7daac2 100644 (file)
--- a/m4/strdup.m4
+++ b/m4/strdup.m4
@@ -1,15 +1,36 @@
-# strdup.m4 serial 6
-dnl Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+# strdup.m4 serial 11
+
+dnl Copyright (C) 2002-2009 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.
 
 AC_DEFUN([gl_FUNC_STRDUP],
 [
-  AC_LIBSOURCES([strdup.c, strdup.h])
+  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+  AC_REPLACE_FUNCS([strdup])
+  AC_CHECK_DECLS_ONCE([strdup])
+  if test $ac_cv_have_decl_strdup = no; then
+    HAVE_DECL_STRDUP=0
+  fi
+  gl_PREREQ_STRDUP
+])
 
-  AC_REPLACE_FUNCS(strdup)
-  AC_CHECK_DECLS_ONCE(strdup)
+AC_DEFUN([gl_FUNC_STRDUP_POSIX],
+[
+  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+  AC_REQUIRE([gl_CHECK_MALLOC_POSIX])
+  if test $gl_cv_func_malloc_posix != yes; then
+    REPLACE_STRDUP=1
+    AC_LIBOBJ([strdup])
+  else
+    AC_REPLACE_FUNCS([strdup])
+  fi
+  AC_CHECK_DECLS_ONCE([strdup])
+  if test $ac_cv_have_decl_strdup = no; then
+    HAVE_DECL_STRDUP=0
+  fi
   gl_PREREQ_STRDUP
 ])