[petsc-users] Makefile for mixed C++ and Fortran code

[Smith, Barry F.]

   You need to determine exactly what flags are passed to the C++ compiler for your compile that works and make sure those same flags are used in "PETSc version" of the makefile. You could add the flags directly to the rule 

> %.o:%.cpp
>    $(CLINKER) $(CXXFLAGS) $(CPPFLAGS) -c -frounding-math $< -o $@

  Barry


> On Jun 1, 2018, at 12:37 PM, Danyang Su <danyang.su at gmail.com> wrote:
> 
> Follow up:
> 
> With following command
> 
> executable: $(SOURCES) chkopts
>    -${FLINKER} $(FFLAGS) $(FPPFLAGS) $(CPPFLAGS)  -o executable.out $(SOURCES) ${PETSC_LIB}
> 
> %.o:%.F90
>    $(FLINKER) $(FFLAGS) $(FPPFLAGS) -c -frounding-math $< -o $@
> %.o:%.cpp
>    $(CLINKER) $(CXXFLAGS) $(CPPFLAGS) -c -frounding-math $< -o $@
> 
> The compiler return error: no match function.
> 
> ../../usg/cgal_triangulation_2d.cpp: In function ‘void outputTriangulation2d(in\
> t, const char*, int, const char*)’:
> ../../usg/cgal_triangulation_2d.cpp:485:20: error: no matching function for cal\
> l to ‘std::basic_ofstream<char>::open(std::string&)’
>    out.open(strfile);
> 
> Thanks,
> 
> 
> Danyang
> 
> On 18-06-01 10:07 AM, Danyang Su wrote:
>> Hi All,
>> 
>> My code needs to link to an external C++ library (CGAL). The code is written in Fortran and I have already written interface to let Fortran call C++ function. For the sequential version without PETSc, it can be compiled without problem using the following makefile. The parallel version without CGAL can also be compiled successfully. However, when I tried to use PETSc together with CGAL library, I cannot compile the code. My questions is: How can I modify the makefile? Do I need to reconfigure PETSc with special flags? All the makefile samples are shown below.
>> 
>> #makefile for sequential version
>> 
>> FC = gfortran
>> #FC = ifort
>> CXX = g++ -std=c++11
>> 
>> DLIB = -lstdc++ -lm -L/usr/local/lib -rdynamic /usr/local/lib/libmpfr.so /usr/local/lib/libgmp.so /usr/local/lib/libCGAL_ImageIO.so.11.0.1 /usr/local/lib/libCGAL.so.11.0.1 /usr/local/lib/libboost_thread.so /usr/local/lib/libboost_system.so -lpthread -lGLU -lGL -lX11 -lXext -lz /usr/local/lib/libCGAL_ImageIO.so.11.0.1 /usr/local/lib/libCGAL.so.11.0.1 /usr/local/lib/libboost_thread.so /usr/local/lib/libboost_system.so -lpthread -lGLU -lGL -lX11 -lXext -lz /usr/local/lib/libmpfr.so /usr/local/lib/libgmp.so /usr/local/lib/libboost_thread.so /usr/local/lib/libboost_system.so -lpthread -Wl,-rpath,/usr/local/lib
>> 
>> FFLAGS = -O3
>> CXXFLAGS = -O3
>> 
>> FPPFLAGS =  -DUSECGAL
>> 
>> SRC =./../../
>> 
>> SOURCES = $(SRC)usg/math_common.o\
>>    $(SRC)usg/geometry_definition.o\
>>    $(SRC)usg/cgal_common.o\
>> 
>> ...
>> 
>> executable: $(SOURCES)
>>    $(FC) $(FFLAGS) $(FPPFLAGS) -o executable.out $(SOURCES) ${LIS_LIB} $(DLIB)
>> %.o:%.F90
>>    $(FC) $(FFLAGS) $(FPPFLAGS) -c -frounding-math $< -o $@
>> %.o:%.cpp
>>    $(CXX) $(CXXFLAGS) $(CPPFLAGS) -c -frounding-math $< -o $@
>> 
>> 
>> #makefile for parallel version with PETSc, without CGAL
>> 
>> #FC = ifort
>> #FC = gfortran
>> 
>> DLIB = -lm
>> 
>> FFLAGS = -O3
>> 
>> FPPFLAGS =  -DUSEPETSC
>> 
>> SRC =./../../
>> 
>> SOURCES = $(SRC)usg/math_common.o\
>>    $(SRC)usg/geometry_definition.o\
>>    $(SRC)usg/cgal_common.o\
>> 
>> ...
>> 
>> executable: $(SOURCES) chkopts
>>    -${FLINKER} $(FFLAGS) $(FPPFLAGS) $(CPPFLAGS)  -o executable.out $(SOURCES) ${PETSC_LIB}
>> 
>> 
>> #makefile for parallel version with PETSc, with CGAL, CANNOT work
>> 
>> #FC = ifort
>> #FC = gfortran
>> 
>> DLIB = -lm
>> 
>> FFLAGS = -O3
>> 
>> FPPFLAGS =  -DUSEPETSC -DUSECGAL
>> 
>> SRC =./../../
>> 
>> SOURCES = $(SRC)usg/math_common.o\
>>    $(SRC)usg/geometry_definition.o\
>>    $(SRC)usg/cgal_common.o\
>> 
>> ...
>> 
>> executable: $(SOURCES) chkopts
>>    -${FLINKER} $(FFLAGS) $(FPPFLAGS) $(CPPFLAGS)  -o executable.out $(SOURCES) ${PETSC_LIB}
>> 
>> %.o:%.F90
>>    $(FC) $(FFLAGS) $(FPPFLAGS) -c -frounding-math $< -o $@
>> %.o:%.cpp
>>    $(CXX) $(CXXFLAGS) $(CPPFLAGS) -c -frounding-math $< -o $@
>> 
>> 
>> Thanks,
>> 
>> Danyang
>> 
>