Eric Blake ec81852f46 build: enforce makefile conditional style ... Automake has builtin support to prevent botched conditional nesting, but only if you use: if FOO else !FOO endif !FOO An example error message when using the wrong name: daemon/Makefile.am:378: error: else reminder (LIBVIRT_INIT_SCRIPT_SYSTEMD_TRUE) incompatible with current conditional: LIBVIRT_INIT_SCRIPT_SYSTEMD_FALSE daemon/Makefile.am:381: error: endif reminder (LIBVIRT_INIT_SCRIPT_SYSTEMD_TRUE) incompatible with current conditional: LIBVIRT_INIT_SCRIPT_SYSTEMD_FALSE As our makefiles tend to have quite a bit of nested conditionals, it's better to take advantage of the benefits of the build system double-checking that our conditionals are well-nested, but that requires a syntax check to enforce our usage style. Alas, unlike C preprocessor and spec files, we can't use indentation to make it easier to see how deeply nesting goes. * cfg.mk (sc_makefile_conditionals): New rule. * daemon/Makefile.am: Enforce the style. * gnulib/tests/Makefile.am: Likewise. * python/Makefile.am: Likewise. * src/Makefile.am: Likewise. * tests/Makefile.am: Likewise. * tools/Makefile.am: Likewise. Signed-off-by: Eric Blake <eblake@redhat.com>		2013-09-04 09:40:20 -06:00
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Makefile.am	build: enforce makefile conditional style	2013-09-04 09:40:20 -06:00