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[flang-rt] Fixed HAVE_LDBL_MANT_DIG_113 detection. #131010

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Merged
merged 1 commit into from
Mar 12, 2025
Merged

[flang-rt] Fixed HAVE_LDBL_MANT_DIG_113 detection. #131010

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11 changes: 0 additions & 11 deletions flang-rt/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -293,17 +293,6 @@ elseif (FLANG_RT_GCC_RESOURCE_DIR)
endif ()
endif ()

# Check if 128-bit float computations can be done via long double.
check_cxx_source_compiles(
"#include <cfloat>
#if LDBL_MANT_DIG != 113
#error LDBL_MANT_DIG != 113
#endif
int main() { return 0; }
"
HAVE_LDBL_MANT_DIG_113)


#####################
# Build Preparation #
#####################
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8 changes: 6 additions & 2 deletions flang/cmake/modules/FlangCommon.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -25,8 +25,12 @@ if (FLANG_RUNTIME_F128_MATH_LIB)
endif()

# Check if 128-bit float computations can be done via long double
check_cxx_source_compiles(
"#include <cfloat>
# Note that '-nostdinc++' might be implied when this code kicks in
# (see 'runtimes/CMakeLists.txt'), so we cannot use 'cfloat' C++ header
# file in the test below.
# Compile it as C.
check_c_source_compiles(
"#include <float.h>
#if LDBL_MANT_DIG != 113
#error LDBL_MANT_DIG != 113
#endif
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