Question

I am writing a PHP extension. config.m4 generates the Makefile, but I want to include, at the begin of this Makefile another Makefile. (e.g.: "-include Makefile.local").

I don’t want to do it in the Makefile itself, since configure will recreate it and erase my changes when invoked.

How can I do it from config.m4?

Answer 1

Try this in config.m4:

AC_CONFIG_COMMANDS_PRE([cat >Makefile.tmp <<EOF
-include MyInclude1
-include MyInclude2
EOF
cat Makefile >> Makefile.tmp
mv -f Makefile.tmp Makefile])

Your Makefile should now look like:

-include MyInclude1
-include MyInclude2
srcdir = /path/to/source/dir
...

…after running configure.