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

[Smith, Barry F.]

  What happens if you add ${DLIB} to the end of the line

> executable: $(SOURCES) chkopts
>    -${FLINKER} $(FFLAGS) $(FPPFLAGS) $(CPPFLAGS)  -o executable.out $(SOURCES) ${PETSC_LIB}

  Send all the output from trying this.

   Barry




> On Jun 1, 2018, at 12:07 PM, Danyang Su <danyang.su at gmail.com> 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
>