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Merge topic 'FortranCInterface-gcc-12-lto'

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6a0ce19ce1 FortranCInterface: Fix compatibility with GCC gfortran 12 LTO

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !6879
This commit is contained in:
Brad King
2022-01-20 16:57:57 +00:00
committed by Kitware Robot
parent 925d089a4d 6a0ce19ce1
commit 79589f7dfe
1 changed files with 13 additions and 0 deletions
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Modules/FortranCInterface/CMakeLists.txt
+13
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@@ -102,6 +102,19 @@ set_property(TARGET symbols PROPERTY POSITION_INDEPENDENT_CODE 1)
add_executable(FortranCInterface main.F call_sub.f ${call_mod})
target_link_libraries(FortranCInterface PUBLIC symbols)
# If IPO is enabled here, GCC gfortran >= 12.0 will obfuscate
# the strings of the return values in the compiled executable,
# which we use to regex match against later.
# The static libraries must be build with IPO and non-IPO objects,
# as that will ensure the verify step will operate on IPO objects,
# if requested by the system compiler flags.
if(CMAKE_Fortran_COMPILER_ID STREQUAL "GNU" AND
CMAKE_Fortran_COMPILER_VERSION VERSION_GREATER_EQUAL 12)
target_compile_options(FortranCInterface PRIVATE "-fno-lto")
target_compile_options(myfort PRIVATE "-flto=auto" "-ffat-lto-objects")
target_compile_options(symbols PRIVATE "-flto=auto" "-ffat-lto-objects")
endif()
file(GENERATE OUTPUT exe-$<CONFIG>.cmake CONTENT [[
set(FortranCInterface_EXE "$<TARGET_FILE:FortranCInterface>")
]])