Catcrafts/Crafter.Build
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fix: decide a build step by its exit code, not by whether it printed

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RunCommand merged stderr into stdout, dropped pclose's status and returned
the text; every compile, link and archive site then read "printed something"
as "failed". A warning is printing something, so a translation unit that
warned failed the build — but only on the run that actually recompiled it,
since warnings aren't re-emitted for an object that's already up to date.
The same unchanged source therefore passed or failed depending on the state
of the build tree: flaky-looking tests locally, and a cold CI checkout
surfacing every latent warning in a project at once as unrelated failures.

RunCommand is gone, replaced by RunBuildCommand: it goes through
RunCommandChecked, returns "" when the command exited 0 (so every caller's
`if (!result.empty())` error path is unchanged) and hands any warnings to
the new Progress::Diagnostic instead of to the error path. That also closes
the quiet half of the bug — a compiler killed by the OOM killer prints
nothing, so it used to read as success and leave the build carrying on with
a missing object; it now reports the signal that killed it.

Warnings are now shown rather than swallowed, which they weren't in either
direction before: invisible on an incremental build, fatal on a cold one.
Failing on them stays a project's choice, via -Werror in compileFlags.
This commit is contained in:
catbot 2026-08-26 00:51:15 +00:00
commit 8e2d21a2bc
7 changed files with 77 additions and 64 deletions
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8
implementations/Crafter.Build-Interface.cpp
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@ -79,7 +79,7 @@ namespace Crafter {
// -MD records every header the preamble pulled in, next to the BMI as
// <name>.pcm.d, so the next Check can see an edit to one of them.
std::string result = RunCommand(std::format("{0} {1}.cppm --precompile -MD -MF {2}.pcm.d -o {2}.pcm", clang, path.string(), (pcmDir/path.filename()).string()));
std::string result = RunBuildCommand(std::format("{0} {1}.cppm --precompile -MD -MF {2}.pcm.d -o {2}.pcm", clang, path.string(), (pcmDir/path.filename()).string()));
if (!result.empty()) {
bool expected = false;
@ -94,7 +94,7 @@ namespace Crafter {
compiled.store(true);
compiled.notify_all();
result = RunCommand(std::format("{} -Wno-unused-command-line-argument {}.pcm -c -o {}.o", clang, (pcmDir/path.filename()).string(), (buildDir/path.filename()).string()));
result = RunBuildCommand(std::format("{} -Wno-unused-command-line-argument {}.pcm -c -o {}.o", clang, (pcmDir/path.filename()).string(), (buildDir/path.filename()).string()));
if (!result.empty()) {
bool expected = false;
@ -203,7 +203,7 @@ namespace Crafter {
// -MD records every header the preamble pulled in, next to the BMI as
// <name>.pcm.d, so the next Check can see an edit to one of them.
std::string result = RunCommand(std::format("{0} {1}.cppm --precompile -MD -MF {2}.pcm.d -o {2}.pcm", clang, path.string(), (pcmDir/path.filename()).string()));
std::string result = RunBuildCommand(std::format("{0} {1}.cppm --precompile -MD -MF {2}.pcm.d -o {2}.pcm", clang, path.string(), (pcmDir/path.filename()).string()));
if (!result.empty()) {
bool expected = false;
@ -218,7 +218,7 @@ namespace Crafter {
compiled.store(true);
compiled.notify_all();
result = RunCommand(std::format("{} -Wno-unused-command-line-argument {}.pcm -c -o {}.o", clang, (pcmDir/path.filename()).string(), (buildDir/path.filename()).string()));
result = RunBuildCommand(std::format("{} -Wno-unused-command-line-argument {}.pcm -c -o {}.o", clang, (pcmDir/path.filename()).string(), (buildDir/path.filename()).string()));
if (!result.empty()) {
bool expected = false;