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FindHDF5: Find C component with only CXX compiler

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For CXX-only projects it is sometimes useful to detect the C
component even with just a CXX compiler.

Fixes: #24241
This commit is contained in:
Christoph Junghans
2022-12-13 18:29:18 -07:00
committed by Christoph Junghans
parent ff875ed859
commit 14c46fb16a
1 changed files with 4 additions and 0 deletions
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Modules/FindHDF5.cmake
+4
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@@ -222,6 +222,10 @@ function(_HDF5_test_regular_compiler_C success version is_parallel)
if(NOT ${success} OR
NOT EXISTS ${scratch_directory}/compiler_has_h5_c)
set(test_file ${scratch_directory}/cmake_hdf5_test.c)
# CXX project without C enabled
if(CMAKE_CXX_COMPILER_LOADED AND NOT CMAKE_C_COMPILER_LOADED)
set(test_file ${scratch_directory}/cmake_hdf5_test.cpp)
endif()
file(WRITE ${test_file}
"#include <hdf5.h>\n"
"const char* info_ver = \"INFO\" \":\" H5_VERSION;\n"