(This is a follow-up of Detect library in Makefile.PL).

I would like to use Devel::CheckLib to check that a number of PHP header files (e.g. php_main.h) are present:

use strict;
use warnings;
use Devel::CheckLib;

our $debug ||= 0;

my @headers = qw ( php_main.h );
my @incpath = qw(
  /usr/local/include
  /usr/local/include/php
  /usr/local/include/php/main
  /usr/local/include/php/TSRM
  /usr/local/include/php/Zend
  /usr/local/include/php/ext
  /usr/local/include/php/ext/date/lib
);

check_lib_or_exit(
  header  => \@headers,
  incpath => \@incpath,
  debug   => $debug,
);
__END__

$ perl -s check.pl -debug 1 | head -20
# /usr/bin/cc assertlibFY1Ue6D2.c -I/usr/local/include -I/usr/local/in
+clude/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM
+ -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/lo
+cal/include/php/ext/date/lib -o assertlibZUeAsG6l
In file included from /usr/local/include/php/Zend/zend_globals.h:28,
                 from /usr/local/include/php/main/php_main.h:25,
                 from assertlibFY1Ue6D2.c:1:
/usr/local/include/php/Zend/zend_globals_macros.h: In function ‘BEGIN_
+EXTERN_C’:
/usr/local/include/php/Zend/zend_globals_macros.h:37: error: expected 
+‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘struct’
/usr/local/include/php/Zend/zend_globals_macros.h:47: error: expected 
+‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘zend_executor_globals
+’
/usr/local/include/php/Zend/zend_globals_macros.h:56: error: expected 
+‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘zend_scanner_globals’
/usr/local/include/php/Zend/zend_globals_macros.h:66: error: expected 
+‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘zend_scanner_globals’
/usr/local/include/php/Zend/zend_globals_macros.h:69: error: expected 
+declaration specifiers before ‘END_EXTERN_C’
[download]

The problem is that the compilation of the header file above apparently need some compiler flags or other options set in order to be successful. To say that the PHP build process is difficult is an understatement. Any light into how, if at all possible, to use Devel::CheckLib in this context is highly appreciated.

Update: As suggested by Anonymous Monk my problem boils down to how to make the following compile:

$ cat foo.c
#include <php_main.h>
int main(void) { 
  return 0; 
}
$ /usr/bin/gcc foo.c -I/usr/local/include -I/usr/local/include/php -I/
+usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local
+/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/p
+hp/ext/date/lib -o foo
[download]

Devel::CheckLib adds platform independence, but making it compile on at least one platform would be a good start. ENV:

gcc version 4.2.4 (Ubuntu 4.2.4-1ubuntu3)
Linux 2.6.24-22-generic #1 SMP Mon Nov 24 18:32:42 UTC 2008 i686 GNU/L
+inux
This is perl, v5.8.8 built for i486-linux-gnu-thread-multi
PHP 5.2.6 (cli)
Zend Engine v2.2.0
[download]