How can I add extra params via config.m4 when building a PHP extension?

Question

I am working on a new PHP Extension written in C. Typically the commands I would use to build it look like this:

phpize
./configure --enable-framework
make
sudo make install

So nothing too crazy here, just standard. My config.m4 is very basic and looks like this:

PHP_ARG_ENABLE(framework, whether to enable framework support,
[ --enable-framework   Enable Framework support])

if test "$PHP_FRAMEWORK" = "yes"; then
    AC_DEFINE(HAVE_FRAMEWORK, 1, [Whether you have Framework])
    PHP_NEW_EXTENSION(framework, framework.c, $ext_shared)
fi

But I have the multi.o binary file generated from gccgo that I want to be part of the compilation process. Adding it just after framework.c doesn't work; like it would for a .c source file.

Because the Makefile is generated automaticly it obviously doesn't know about multi.o, so I know it has to be in this config.m4 file somewhere but I've no idea where.

Does anybody know what I need to do in order for this to work?

Answer 1

I have added this line to my config.m4 file and it appears to have fixed it:

EXTRA_LDFLAGS=multi.o

So now the whole file looks like this:

PHP_ARG_ENABLE(framework, whether to enable framework support,
[ --enable-framework   Enable Framework support])

if test "$PHP_FRAMEWORK" = "yes"; then
    AC_DEFINE(HAVE_FRAMEWORK, 1, [Whether you have Framework])
    PHP_NEW_EXTENSION(framework, framework.c, $ext_shared)
    EXTRA_LDFLAGS=multi.o
fi

Which generates the Makefile that has the line EXTRA_LDFLAGS = multi.o on line 36. This then pulls in the source I need and works correctly.

Not sure if this is the best / right way of doing it, but it works.