canonicalize, canonicalize-lgpl: use <stdlib.h> Match current gnulib conventions of glibc functions being declared in the same header as glibc. This makes it easier to replace broken canonicalize_file_name. canonicalize still requires "canonicalize.h" because canonicalize_filename_mode is not in glibc. With this patch, canonicalize-lgpl always provides realpath and canonicalize_file_name, while canonicalize can provide canonicalize_file_name but not realpath; if both modules are in use, canonicalize_file_name comes from the LGPLv2+ sources, but the testing comes from canonicalize. * modules/canonicalize-lgpl (Files): Drop canonicalize.h. (Include): Mention <stdlib.h>. (configure.ac): Mention functions we provide. * modules/canonicalize (configure.ac): Likewise. * m4/canonicalize-lgpl.m4 (gl_CANONICALIZE_LGPL): Always replace realpath if canonicalize_file_name is missing. * m4/stdlib_h.m4 (gl_STDLIB_H_DEFAULTS): Provide defaults. * modules/stdlib (Makefile.am): Substitute witnesses. * lib/stdlib.in.h (canonicalize_file_name, realpath): Declare. * lib/canonicalize-lgpl.c (includes): Adjust accordingly. * lib/canonicalize.h (canonicalize_file_name): Drop declaration. * NEWS: Document this. * doc/glibc-functions/canonicalize_file_name.texi (canonicalize_file_name): Likewise. * doc/posix-functions/realpath.texi (realpath): Likewise. * tests/test-canonicalize-lgpl.c (includes): Use <stdlib.h>. Signed-off-by: Eric Blake <ebb9@byu.net>

--- a/modules/canonicalize-lgpl
+++ b/modules/canonicalize-lgpl
@@ -1,8 +1,7 @@
 Description:
-Canonical absolute file name (LGPLed version).
+realpath, canonical_file_name: Provide canonical absolute file name
 
 Files:
-lib/canonicalize.h
 lib/canonicalize-lgpl.c
 m4/canonicalize-lgpl.m4
 
@@ -21,11 +20,13 @@
 configure.ac:
 gl_CANONICALIZE_LGPL
 gl_MODULE_INDICATOR([canonicalize-lgpl])
+gl_STDLIB_MODULE_INDICATOR([canonicalize_file_name])
+gl_STDLIB_MODULE_INDICATOR([realpath])
 
 Makefile.am:
 
 Include:
-"canonicalize.h"
+<stdlib.h>
 
 License:
 LGPLv2+