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authorJim Meyering <jim@meyering.net>2006-07-02 08:29:26 +0000
committerJim Meyering <jim@meyering.net>2006-07-02 08:29:26 +0000
commitb1f0257390ad776da05e926880438f102a5533fe (patch)
tree6d66a6da70fe4f897f53d80d1067c51eb4249cc0 /m4
parent58df3afc50366e5a2647a38a27cefd0ffed8d393 (diff)
downloadcoreutils-b1f0257390ad776da05e926880438f102a5533fe.tar.xz
New file, from gnulib. Required by stdint.m4.
Diffstat (limited to 'm4')
-rw-r--r--m4/full-header-path.m441
1 files changed, 41 insertions, 0 deletions
diff --git a/m4/full-header-path.m4 b/m4/full-header-path.m4
new file mode 100644
index 000000000..b54e1b39c
--- /dev/null
+++ b/m4/full-header-path.m4
@@ -0,0 +1,41 @@
+# full-header-path.m4 serial 2
+dnl Copyright (C) 2006 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 Derek Price.
+
+# gl_FULL_HEADER_PATH(HEADER1 HEADER2 ...)
+# ----------------------------------------
+# Find the full path to a header file, assuming the header exists.
+# If the header were sys/inttypes.h, this macro would define
+# FULL_PATH_SYS_INTTYPES_H to the `<>' quoted full path to sys/inttypes.h
+# in config.h
+# (e.g. `#define FULL_PATH_SYS_INTTYPES_H </usr/include/sys/inttypes.h>').
+AC_DEFUN([gl_FULL_HEADER_PATH],
+[AC_LANG_PREPROC_REQUIRE()dnl
+AC_FOREACH([gl_HEADER_NAME], [$1],
+ [AS_VAR_PUSHDEF([gl_full_header_path],
+ [gl_cv_full_path_]m4_quote(m4_defn([gl_HEADER_NAME])))dnl
+ AC_CACHE_CHECK([full path to <]m4_quote(m4_defn([gl_HEADER_NAME]))[>],
+ m4_quote(m4_defn([gl_full_header_path])),
+ [AS_VAR_PUSHDEF([ac_header_exists],
+ [ac_cv_header_]m4_quote(m4_defn([gl_HEADER_NAME])))dnl
+ AC_CHECK_HEADERS_ONCE(m4_quote(m4_defn([gl_HEADER_NAME])))dnl
+ if test AS_VAR_GET(ac_header_exists) = yes; then
+ AC_LANG_CONFTEST([AC_LANG_SOURCE([[#include <]]m4_dquote(m4_defn([gl_HEADER_NAME]))[[>]])])
+dnl eval is necessary to expand ac_cpp.
+dnl Ultrix and Pyramid sh refuse to redirect output of eval, so use subshell.
+ AS_VAR_SET(gl_full_header_path,
+[`(eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
+sed -n '\#/]m4_quote(m4_defn([gl_HEADER_NAME]))[#{s#.*"\(.*/]m4_quote(m4_defn([gl_HEADER_NAME]))[\)".*#\1#;p;q;}'`])
+ fi
+ AS_VAR_POPDEF([ac_header_exists])dnl
+ ])dnl
+ AC_DEFINE_UNQUOTED(AS_TR_CPP([FULL_PATH_]m4_quote(m4_defn([gl_HEADER_NAME]))),
+ [<AS_VAR_GET(gl_full_header_path)>],
+ [Define this to the full path to <]m4_quote(m4_defn([gl_HEADER_NAME]))[>.])
+ AS_VAR_POPDEF([gl_full_header_path])dnl
+])dnl
+])# gl_FULL_HEADER_PATH