build-time: remove 20% more by PCH'ing C++ stdlib
It seems like someone implemented precompiled headers a long time ago and then it never got ported to meson or maybe didn't work at all. This is, however, blessedly easy to simply implement. I went looking for `#define` that could affect the result of precompiling the headers, and as far as I can tell we aren't doing any of that, so this should truly just be free build time savings. Previous state: Compilation (551 times): Parsing (frontend): 1302.1 s Codegen & opts (backend): 956.3 s New state: **** Time summary: Compilation (567 times): Parsing (frontend): 1123.0 s Codegen & opts (backend): 1078.1 s I wonder if the "regression" in codegen time is just doing the PCH operation a few times, because meson does it per-target. Change-Id: I664366b8069bab4851308b3a7571bea97ac64022
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parent
e6e5cacabe
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11 changed files with 18 additions and 5 deletions
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@ -87,11 +87,12 @@ pre-commit-run {
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"file"
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"header"
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];
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# generated files; these will never actually be seen by this
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# check, and are left here as documentation
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excludes = [
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"(parser|lexer)-tab\\.hh$"
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"\\.gen\\.hh$"
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''^src/pch/.*$''
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# generated files; these will never actually be seen by this
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# check, and are left here as documentation
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''(parser|lexer)-tab\.hh$''
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''\.gen\.hh$''
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];
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entry = lib.getExe pkgs.check-headers;
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};
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@ -169,7 +169,6 @@ stdenv.mkDerivation (finalAttrs: {
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./boehmgc-coroutine-sp-fallback.diff
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./doc
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./misc
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./precompiled-headers.h
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./src
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./COPYING
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]
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@ -54,6 +54,7 @@ libcmd = library(
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nlohmann_json,
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lix_doc
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],
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cpp_pch : ['../pch/precompiled-headers.hh'],
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install : true,
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# FIXME(Qyriad): is this right?
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install_rpath : libdir,
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@ -145,6 +145,7 @@ libexpr = library(
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include_directories : [
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'../libmain',
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],
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cpp_pch : ['../pch/precompiled-headers.hh'],
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install : true,
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# FIXME(Qyriad): is this right?
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install_rpath : libdir,
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@ -30,6 +30,7 @@ libfetchers = library(
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liblixutil,
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nlohmann_json,
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],
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cpp_pch : ['../pch/precompiled-headers.hh'],
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install : true,
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# FIXME(Qyriad): is this right?
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install_rpath : libdir,
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@ -20,6 +20,7 @@ libmain = library(
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liblixutil,
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liblixstore,
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],
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cpp_pch : ['../pch/precompiled-headers.hh'],
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install : true,
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# FIXME(Qyriad): is this right?
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install_rpath : libdir,
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@ -220,6 +220,7 @@ libstore = library(
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nlohmann_json,
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],
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cpp_args : cpp_args,
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cpp_pch : ['../pch/precompiled-headers.hh'],
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install : true,
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# FIXME(Qyriad): is this right?
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install_rpath : libdir,
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@ -129,6 +129,7 @@ libutil = library(
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openssl,
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nlohmann_json,
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],
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cpp_pch : ['../pch/precompiled-headers.hh'],
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implicit_include_directories : true,
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install : true,
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)
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@ -89,6 +89,7 @@ nix = executable(
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boehm,
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nlohmann_json,
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],
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cpp_pch : ['../pch/precompiled-headers.hh'],
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install : true,
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# FIXME(Qyriad): is this right?
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install_rpath : libdir,
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@ -68,6 +68,7 @@ libutil_tester = executable(
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liblixutil_test_support,
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nlohmann_json,
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],
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cpp_pch : ['../../src/pch/precompiled-headers.hh'],
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)
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test(
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@ -102,6 +103,7 @@ libstore_test_support = library(
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include_directories : include_directories(
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'libstore-support',
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),
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cpp_pch : ['../../src/pch/precompiled-headers.hh'],
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)
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liblixstore_test_support = declare_dependency(
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include_directories : include_directories('libstore-support'),
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@ -135,6 +137,7 @@ libstore_tester = executable(
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gtest,
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nlohmann_json,
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],
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cpp_pch : ['../../src/pch/precompiled-headers.hh'],
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)
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test(
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@ -166,6 +169,7 @@ libexpr_test_support = library(
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include_directories : include_directories(
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'libexpr-support',
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),
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cpp_pch : ['../../src/pch/precompiled-headers.hh'],
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)
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liblixexpr_test_support = declare_dependency(
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include_directories : include_directories('libexpr-support'),
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@ -199,6 +203,7 @@ libexpr_tester = executable(
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gtest,
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nlohmann_json,
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],
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cpp_pch : ['../../src/pch/precompiled-headers.hh'],
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)
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test(
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@ -225,6 +230,7 @@ libcmd_tester = executable(
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gtest,
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boost,
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],
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cpp_pch : ['../../src/pch/precompiled-headers.hh'],
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)
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test(
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