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cmake: correct PIE support detection, add error output for debugging

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`check_pie_supported` only uses the `OUTPUT_VARIABLE` to to signify errors
if PIE is actually supported is signaled by `CMAKE_<lang>_LINK_PIE_SUPPORTED`.

Checking if `OUTPUT_VARIABLE` is empty is not enough either since the check
is bypassed if its results are cached but the output variable is not cached.
This commit is contained in:
Jan200101 2024-05-26 15:13:33 +02:00 committed by Alex Rønne Petersen
parent 901f344be2
commit 41dbd0d0da
1 changed files with 2 additions and 2 deletions
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4
CMakeLists.txt
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@ -125,8 +125,8 @@ check_pie_supported(
OUTPUT_VARIABLE ZIG_PIE_SUPPORTED_BY_CMAKE
LANGUAGES C CXX
)
if(ZIG_PIE AND NOT ZIG_PIE_SUPPORTED_BY_CMAKE)
message(SEND_ERROR "ZIG_PIE was requested but CMake does not support it for \"zigcpp\" target")
if(ZIG_PIE AND NOT CMAKE_CXX_LINK_PIE_SUPPORTED)
message(SEND_ERROR "ZIG_PIE was requested but CMake does not support it for \"zigcpp\" target: ${ZIG_PIE_SUPPORTED_BY_CMAKE}")
endif()