Make it possible to compile setenv.c separately, unconditionally.

diff --git a/ChangeLog b/ChangeLog
index 3754e7c..5b669a0 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2007-03-03  Bruno Haible  <bruno@clisp.org>
 
+       * m4/setenv.m4 (gl_FUNC_SETENV_SEPARATE): New macro.
+       * lib/setenv.c: Compile the file only if _LIBC || !HAVE_SETENV.
+
        * m4/readlink.m4 (gl_FUNC_READLINK_SEPARATE): New macro.
        (gl_FUNC_READLINK): Update.
 

diff --git a/lib/setenv.c b/lib/setenv.c
index 2383248..c54c28d 100644 (file)
--- a/lib/setenv.c
+++ b/lib/setenv.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992,1995-1999,2000-2003,2005,2006 Free Software Foundation, Inc.
+/* Copyright (C) 1992,1995-1999,2000-2003,2005-2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This program is free software; you can redistribute it and/or modify
@@ -31,6 +31,8 @@
 # include <unistd.h>
 #endif
 
+#if _LIBC || !HAVE_SETENV
+
 #if !_LIBC
 # include "allocsa.h"
 #endif
@@ -326,3 +328,5 @@ text_set_element (__libc_subfreeres, free_mem);
 weak_alias (__setenv, setenv)
 weak_alias (__clearenv, clearenv)
 #endif
+
+#endif /* _LIBC || !HAVE_SETENV */

diff --git a/m4/setenv.m4 b/m4/setenv.m4
index 0d54a96..d6901de 100644 (file)
--- a/m4/setenv.m4
+++ b/m4/setenv.m4
@@ -1,4 +1,4 @@
-# setenv.m4 serial 7
+# setenv.m4 serial 8
 dnl Copyright (C) 2001-2004, 2006-2007 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -13,6 +13,13 @@ AC_DEFUN([gl_FUNC_SETENV],
   fi
 ])
 
+# Like gl_FUNC_SETENV, except prepare for separate compilation (no AC_LIBOBJ).
+AC_DEFUN([gl_FUNC_SETENV_SEPARATE],
+[
+  AC_CHECK_FUNCS_ONCE([setenv])
+  gl_PREREQ_SETENV
+])
+
 AC_DEFUN([gl_FUNC_UNSETENV],
 [
   AC_CHECK_FUNCS([unsetenv])