Calling fortran subroutine from my deal.II code

[Praveen C]

Dear all

I have made changes to CMakeLists.txt

set (CMAKE_Fortran_COMPILER "gfortran")
set (CMAKE_Fortran_FLAGS_RELEASE "-O2 -m64")
set (CMAKE_Fortran_FLAGS_DEBUG   "-O0 -g -m64”)

SET(TARGET_SRC
  ${TARGET}.cc
  kronrod.f90
  )

PROJECT(${TARGET} CXX Fortran)

When I compile, I get this error

$ make
[ 33%] Building Fortran object CMakeFiles/main.dir/kronrod.f90.o
gfortran: error: unrecognized command line option '-Qunused-arguments'; did you mean '-Wunused-argument'?
make[2]: *** [CMakeFiles/main.dir/kronrod.f90.o] Error 1
make[1]: *** [CMakeFiles/main.dir/all] Error 2
make: *** [all] Error 2

This seems related to clang. How can I fix this ? I see this flag here

CMakeFiles/main.dir/flags.make:Fortran_FLAGS = -O3 -g   -F/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/System/Library/Frameworks  -pedantic -fPIC -Wall -Wextra -Wpointer-arith -Wwrite-strings -Wsynth -Wsign-compare -Wswitch -Woverloaded-virtual  -Qunused-arguments -Wno-unsupported-friend -Wno-unused-parameter -Wno-unused-variable -Wno-undefined-var-template -openmp-simd -std=c++1z -std=c++1z -ftemplate-depth=1024 -Wno-unused-local-typedefs -O0 -ggdb -Wa,--compress-debug-sections

Thanks

praveen

[Jean-Paul Pelteret]

Hi Praveen,

I know its been a long time since you posted this question, but it caught my eye again recently. Matthias has posted an explanation on GitHub as to how to work around if you're using an older version of deal.II, or why its no longer an issue with the current development version.

Regards,
Jean-Paul

[Praveen C]

Thanks a lot. I will need this in the near future and may save me some effort from converting fortran to c++.

Best

praveen

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