Re: [PATCH 2/2] t/Makefile: get UNIT_TESTS list from C sources

[Jeff King <peff@peff.net>]

On Mon, Jan 29, 2024 at 12:26:42PM +0100, Patrick Steinhardt wrote:

> > -UNIT_TESTS = $(sort $(filter-out %.pdb unit-tests/bin/t-basic%,$(wildcard unit-tests/bin/t-*)))
> > +UNIT_TEST_SOURCES = $(wildcard unit-tests/t-*.c)
> > +UNIT_TEST_PROGRAMS = $(patsubst unit-tests/%.c,unit-tests/bin/%,$(UNIT_TEST_SOURCES))
> > +UNIT_TESTS = $(sort $(filter-out unit-tests/bin/t-basic%,$(UNIT_TEST_PROGRAMS)))
> 
> Wouldn't we have to honor `$X` on Windows systems so that the unit tests
> have the expected ".exe" suffix here?

Hmm, good point. It seems like the answer should obviously be "yes", but
Windows CI seemed to pass all the same (and I checked that it indeed ran
the unit tests). Do we only get the $X suffix for MSVC builds or
something? Looks like maybe cygwin, as well.

I imagine the solution is just:

diff --git a/t/Makefile b/t/Makefile
index c5c6e2ef6b..9b9b30f559 100644
--- a/t/Makefile
+++ b/t/Makefile
@@ -43,7 +43,7 @@ TINTEROP = $(sort $(wildcard interop/i[0-9][0-9][0-9][0-9]-*.sh))
 CHAINLINTTESTS = $(sort $(patsubst chainlint/%.test,%,$(wildcard chainlint/*.test)))
 CHAINLINT = '$(PERL_PATH_SQ)' chainlint.pl
 UNIT_TEST_SOURCES = $(wildcard unit-tests/t-*.c)
-UNIT_TEST_PROGRAMS = $(patsubst unit-tests/%.c,unit-tests/bin/%,$(UNIT_TEST_SOURCES))
+UNIT_TEST_PROGRAMS = $(patsubst unit-tests/%.c,unit-tests/bin/%$(X),$(UNIT_TEST_SOURCES))
 UNIT_TESTS = $(sort $(filter-out unit-tests/bin/t-basic%,$(UNIT_TEST_PROGRAMS)))
 
 # `test-chainlint` (which is a dependency of `test-lint`, `test` and `prove`)

but it looks like we might need to include config.mak.uname, as well. It
would be nice to identify a build that actually needs it so I can
confirm that the fix works.

-Peff