diff options
| author | Peter Simons <simons@cryp.to> | 2007-02-18 23:43:16 +0100 |
|---|---|---|
| committer | Peter Simons <simons@cryp.to> | 2007-02-18 23:43:16 +0100 |
| commit | 16aee45643e593e2833e4dff19df7b5f14267a79 (patch) | |
| tree | ba40c1ee401bbbcec7dbee5e3bb51d21c70db130 /m4/ax_auto_include_headers.m4 | |
| download | autoconf-archive-16aee45643e593e2833e4dff19df7b5f14267a79.tar.gz | |
Imported http://autoconf-archive.cryp.to/ release 2007-02-14.
Diffstat (limited to 'm4/ax_auto_include_headers.m4')
| -rw-r--r-- | m4/ax_auto_include_headers.m4 | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/m4/ax_auto_include_headers.m4 b/m4/ax_auto_include_headers.m4 new file mode 100644 index 0000000..8b5a9c4 --- /dev/null +++ b/m4/ax_auto_include_headers.m4 @@ -0,0 +1,63 @@ +##### http://autoconf-archive.cryp.to/ax_auto_include_headers.html +# +# SYNOPSIS +# +# AX_AUTO_INCLUDE_HEADERS(INCLUDE-FILE ...) +# +# DESCRIPTION +# +# Given a space-separated list of INCLUDE-FILEs, +# AX_AUTO_INCLUDE_HEADERS will output a conditional #include for each +# INCLUDE-FILE. The following example demonstrates how +# AX_AUTO_INCLUDE_HEADERS's might be used in a configure.ac script: +# +# AH_BOTTOM([ +# AX_AUTO_INCLUDE_HEADERS([sys/resource.h invent.h sys/sysinfo.h])dnl +# ]) +# +# The preceding invocation instructs autoheader to put the following +# code at the bottom of the config.h file: +# +# #ifdef HAVE_SYS_RESOURCE_H +# # include <sys/resource.h> +# #endif +# #ifdef HAVE_INVENT_H +# # include <invent.h> +# #endif +# #ifdef HAVE_SYS_SYSINFO_H +# # include <sys/sysinfo.h> +# #endif +# +# Note that AX_AUTO_INCLUDE_HEADERS merely outputs +# #ifdef/#include/#endif blocks. The configure.ac script still needs +# to invoke AC_CHECK_HEADERS to #define the various HAVE_*_H +# preprocessor macros. +# +# Here's an easy way to get from config.h a complete list of header +# files who existence is tested by the configure script: +# +# cat config.h | perl -ane '/ HAVE_\S+_H / && do {$_=$F[$#F-1]; s/^HAVE_//; s/_H/.h/; s|_|/|g; tr/A-Z/a-z/; print "$_ "}' +# +# You can then manually edit the resulting list and incorporate it +# into one or more calls to AX_AUTO_INCLUDE_HEADERS. +# +# LAST MODIFICATION +# +# 2006-10-22 +# +# COPYLEFT +# +# Copyright (c) 2006 Scott Pakin <pakin@uiuc.edu> +# +# Copying and distribution of this file, with or without +# modification, are permitted in any medium without royalty provided +# the copyright notice and this notice are preserved. + +AC_DEFUN([AX_AUTO_INCLUDE_HEADERS], [dnl +AC_FOREACH([AX_Header], [$1], [dnl +m4_pushdef([AX_IfDef], AS_TR_CPP(HAVE_[]AX_Header))dnl +[#]ifdef AX_IfDef +[#] include <AX_Header> +[#]endif +m4_popdef([AX_IfDef])dnl +])]) |