Simplify build: add libcommon.a instead of listing all common objects #8594
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Signed-off-by: Rusty Russell <[email protected]>
This means we don't have to manually choose what to link against, which is much of the complexity of our Makefiles: the compiler will automatically use any object files it needs to link. We already do this for ccan as libccan.a, now we have libcommon.a. We don't link against it for *everything*, as some tests require their own versions. Notes: 1. I get rid of the weird plugins/test/Makefile2 (accidental commit?) 2. Many tests change due to update-mocks. 3. In some places I added the missing dependency on the Makefile itself, though most are in the next patch. Before: Total program size: 221366528 Total tests size: 364243856 After: Total program size: 190733656 Total tests size: 337880888 Build time from make clean (RUST=0) (includes building external libs): Before: real 0m38.227000-44.245000(41.8222+/-1.6)s user 3m2.105000-33.696000(23.1442+/-8.4)s sys 0m35.054000-42.269000(39.7231+/-2)s After: real 0m38.944000-40.416000(40.1131+/-0.4)s user 3m6.790000-17.159000(15.0571+/-2.8)s sys 0m35.304000-37.336000(36.8942+/-0.57)s Build time after touch config.vars (RUST=0): Before: real 0m18.928000-22.776000(21.5084+/-1.1)s user 2m8.613000-36.567000(27.7281+/-7.7)s sys 0m20.458000-23.436000(22.3963+/-0.77)s After: real 0m19.831000-21.862000(21.5528+/-0.58)s user 2m15.361000-30.731000(28.4798+/-4.4)s sys 0m21.056000-22.339000(22.0346+/-0.35)s Signed-off-by: Rusty Russell <[email protected]> rusty@rusty-Framework:~/devel/cvs/lightni
…their Makefile. 1. $(JSMN_OBJS) is not set anywhere. 2. You don't need to depend on CCAN_HEADERS: the top level Makefile has all object depedning on it. 3. Similarly, CCAN_OBJS. 4. Every object file should be rebuilt if its Makefile changes. Signed-off-by: Rusty Russell <[email protected]>
Each header should only include the other headers it needs to compile; `devtools/reduce-includes.sh */*.h` does this. The C files then need additional includes if they don't compile. And remove the entirely useless wire/onion_wire.h, which only serves to include wire/onion_wiregen.h. Signed-off-by: Rusty Russell <[email protected]>
…ludes. Even if we would currently include it indirectly, we must include it directly. Signed-off-by: Rusty Russell <[email protected]>
Basically, `devtools/reduce-includes.sh */*.c`. Build time from make clean (RUST=0) (includes building external libs): Before: real 0m38.944000-40.416000(40.1131+/-0.4)s user 3m6.790000-17.159000(15.0571+/-2.8)s sys 0m35.304000-37.336000(36.8942+/-0.57)s After: real 0m37.872000-39.974000(39.5466+/-0.59)s user 3m1.211000-14.968000(12.4556+/-3.9)s sys 0m35.008000-36.830000(36.4143+/-0.5)s Build time after touch config.vars (RUST=0): Before: real 0m19.831000-21.862000(21.5528+/-0.58)s user 2m15.361000-30.731000(28.4798+/-4.4)s sys 0m21.056000-22.339000(22.0346+/-0.35)s After: real 0m18.384000-21.307000(20.8605+/-0.92)s user 2m5.585000-26.843000(23.6017+/-6.7)s sys 0m19.650000-22.003000(21.4943+/-0.69)s Signed-off-by: Rusty Russell <[email protected]>
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The main change here is to generate a single archive with all the common, wire and bitcoin objects in it. Programs can simply link against this instead of listing each object file they need: the linker will only use the object files needed. This simplifies Makefiles a great deal, and actually shrinks our binaries a little.
I also took the chance to clean up our Makefiles and reduce our includes.
Changelog-None: build cleanups only.