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Fix CMake builds on Apple that use the Ninja generator #5769

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Merged
martin-frbg merged 2 commits into from
Apr 22, 2026
+3 −3
Merged

Fix CMake builds on Apple that use the Ninja generator #5769

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d270dcb
Using response files on Mac is incompatible (and unnecessary) with Ninja
martin-frbg Apr 22, 2026
c1bb49d
Omit the entire APPLE-specific block if using Ninja
martin-frbg Apr 22, 2026
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6 changes: 3 additions & 3 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -309,8 +309,8 @@ if (USE_OPENMP)
endif()

# Fix "Argument list too long" for macOS - mostly seen with older OS versions on POWERPC or Intel CPUs
if(APPLE)
# Use response files
if(APPLE AND "${CMAKE_GENERATOR}" MATCHES ".*Makefiles")
# Use response files to get around the ARG_MAX limit, unless using the Ninja generator
set(CMAKE_C_USE_RESPONSE_FILE_FOR_OBJECTS 1)
# Always build static library first
if(BUILD_STATIC_LIBS)
Expand All @@ -333,7 +333,7 @@ if(APPLE)
endif()
if(NOT NOFORTRAN)
set(CMAKE_Fortran_USE_RESPONSE_FILE_FOR_OBJECTS 1)
set(CMAKE_Fortran_CREATE_STATIC_LIBRARY ${CREATE_STATIC_LIBRARY_COMMAND})
set(CMAKE_Fortran_CREATE_STATIC_LIBRARY ${CREATE_STATIC_LIBRARY_COMMAND})
if(BUILD_SHARED_LIBS)
set(CMAKE_Fortran_CREATE_SHARED_LIBRARY
"sh -c 'echo \"\" | ${CMAKE_Fortran_COMPILER} -o dummy.o -c -x f95-cpp-input - '"
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