[libc-commits] [libc] [libc][cmake] disable include tests in overlay mode (PR #114566)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

Weird, we're getting linkage failures:
```
: && /usr/bin/clang -fPIC -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -g -fpie -DLIBC_FULL_BUILD -ffreestanding -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wall -Werror projects/libc/test/include/CMakeFiles/libc.test.include.issignaling_c_test.__unit__.__build__.dir/issignaling_test.c.o -o projects/libc/test/include/libc.test.include.issignaling_c_test.__unit__.__build__  projects/libc/src/math/generic/CMakeFiles/libc.src.math.generic.issignaling.__internal__.dir/./issignaling.cpp.o  projects/libc/src/math/generic/CMakeFiles/libc.src.math.generic.issignalingf.__internal__.dir/./issignalingf.cpp.o  projects/libc/src/math/generic/CMakeFiles/libc.src.math.generic.issignalingl.__internal__.dir/./issignalingl.cpp.o && :
/usr/bin/ld: projects/libc/test/include/CMakeFiles/libc.test.include.issignaling_c_test.__unit__.__build__.dir/issignaling_test.c.o: in function `main':
/home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/test/include/issignaling_test.c:21: undefined reference to `issignaling'
/usr/bin/ld: /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/test/include/issignaling_test.c:22: undefined reference to `issignalingf'
/usr/bin/ld: /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/test/include/issignaling_test.c:23: undefined reference to `issignalingl'
/usr/bin/ld: /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/test/include/issignaling_test.c:24: undefined reference to `issignalingf'
/usr/bin/ld: /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/test/include/issignaling_test.c:25: undefined reference to `issignaling'
/usr/bin/ld: /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/test/include/issignaling_test.c:26: undefined reference to `issignalingl'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
[868/877] Linking C executable projects/libc/test/include/libc.test.include.iscanonical_c_test.__unit__.__build__
FAILED: projects/libc/test/include/libc.test.include.iscanonical_c_test.__unit__.__build__ 
: && /usr/bin/clang -fPIC -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -g -fpie -DLIBC_FULL_BUILD -ffreestanding -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wall -Werror projects/libc/test/include/CMakeFiles/libc.test.include.iscanonical_c_test.__unit__.__build__.dir/iscanonical_test.c.o -o projects/libc/test/include/libc.test.include.iscanonical_c_test.__unit__.__build__  projects/libc/src/math/generic/CMakeFiles/libc.src.math.generic.iscanonical.__internal__.dir/./iscanonical.cpp.o  projects/libc/src/math/generic/CMakeFiles/libc.src.math.generic.iscanonicalf.__internal__.dir/./iscanonicalf.cpp.o  projects/libc/src/math/generic/CMakeFiles/libc.src.math.generic.iscanonicall.__internal__.dir/./iscanonicall.cpp.o && :
/usr/bin/ld: projects/libc/test/include/CMakeFiles/libc.test.include.iscanonical_c_test.__unit__.__build__.dir/iscanonical_test.c.o: in function `main':
/home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/test/include/iscanonical_test.c:21: undefined reference to `iscanonical'
/usr/bin/ld: /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/test/include/iscanonical_test.c:22: undefined reference to `iscanonicalf'
/usr/bin/ld: /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/test/include/iscanonical_test.c:23: undefined reference to `iscanonicall'
/usr/bin/ld: /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/test/include/iscanonical_test.c:24: undefined reference to `iscanonicalf'
/usr/bin/ld: /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/test/include/iscanonical_test.c:25: undefined reference to `iscanonical'
/usr/bin/ld: /home/libc-buildbot/libc-aarch64-ubuntu/libc-aarch64-ubuntu-fullbuild-dbg/llvm-project/libc/test/include/iscanonical_test.c:26: undefined reference to `iscanonicall'
```
but we do have those entrypoints in the DEPENDS for those tests AND exposed in that target arch's entrypoints.txt...

https://github.com/llvm/llvm-project/pull/114566