Thanks, it works with appending to LDFLAGS. May I know how to add additional CPP options? It seems manually adding to CXXFLAGS, CPPFLAGS and CXXPPFLAGS won't work in the makefile.
Qiyue Lu On Tue, Jul 9, 2024 at 6:34 PM Satish Balay <[email protected]> wrote: > And sometimes you might need to list these additional libraries/options > after PETSc libraries - in the link command. One way: > > balay@pj01:~/test$ cat makefile > > include ${PETSC_DIR}/lib/petsc/conf/variables > include ${PETSC_DIR}/lib/petsc/conf/rules > LDLIBS += -foobar > > balay@pj01:~/test$ make ex2 > mpicxx -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas > -Wno-lto-type-mismatch -Wno-psabi -fstack-protector -fvisibility=hidden -g > -O0 -I/home/balay/petsc/include > -I/home/balay/petsc/arch-linux-c-debug/include ex2.cpp > -Wl,-rpath,/home/balay/petsc/arch-linux-c-debug/lib > -L/home/balay/petsc/arch-linux-c-debug/lib > -Wl,-rpath,/software/mpich-4.1.1/lib -L/software/mpich-4.1.1/lib > -Wl,-rpath,/usr/lib/gcc/x86_64-redhat-linux/13 > -L/usr/lib/gcc/x86_64-redhat-linux/13 -lpetsc -llapack -lblas -ltriangle > -lm -lX11 -lmpifort -lmpi -lgfortran -lm -lgfortran -lm -lgcc_s -lquadmath > -lstdc++ -lquadmath -foobar -o ex2 > g++: error: unrecognized command-line option ‘-foobar’ > make: *** [<builtin>: ex2] Error 1 > > Satish > > On Tue, 9 Jul 2024, Satish Balay wrote: > > > It depends on your makefile - and how you are over-riding the targets. > 1. Why add -rpath to CXXFLAGS, and not LDFLAGS? The following work for me > with the default makefile format used by petsc examples > > balay@ pj01: ~/test$ ls ex2. cpp makefile > > ZjQcmQRYFpfptBannerStart > > This Message Is From an External Sender > > This message came from outside your organization. > > > > ZjQcmQRYFpfptBannerEnd > > > > It depends on your makefile - and how you are over-riding the targets. > > > > 1. Why add -rpath to CXXFLAGS, and not LDFLAGS? > > > > The following work for me with the default makefile format used by petsc > examples > > > > balay@pj01:~/test$ ls > > ex2.cpp makefile > > balay@pj01:~/test$ cat makefile > > > > include ${PETSC_DIR}/lib/petsc/conf/variables > > include ${PETSC_DIR}/lib/petsc/conf/rules > > > > balay@pj01:~/test$ make ex2 > > mpicxx -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas > -Wno-lto-type-mismatch -Wno-psabi -fstack-protector -fvisibility=hidden -g > -O0 -I/home/balay/petsc/include -I/home/balay/petsc/arch-lin > > ux-c-debug/include ex2.cpp > -Wl,-rpath,/home/balay/petsc/arch-linux-c-debug/lib > -L/home/balay/petsc/arch-linux-c-debug/lib > -Wl,-rpath,/software/mpich-4.1.1/lib -L/software/mpich-4.1.1/lib > -Wl,-rpath,/usr > > /lib/gcc/x86_64-redhat-linux/13 -L/usr/lib/gcc/x86_64-redhat-linux/13 > -lpetsc -llapack -lblas -ltriangle -lm -lX11 -lmpifort -lmpi -lgfortran -lm > -lgfortran -lm -lgcc_s -lquadmath -lstdc++ -lquadmath -o ex2 > > balay@pj01:~/test$ make clean > > balay@pj01:~/test$ make ex2 LDFLAGS=-foobar > > mpicxx -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas > -Wno-lto-type-mismatch -Wno-psabi -fstack-protector -fvisibility=hidden -g > -O0 -I/home/balay/petsc/include -I/home/balay/petsc/arch-lin > > ux-c-debug/include -foobar ex2.cpp > -Wl,-rpath,/home/balay/petsc/arch-linux-c-debug/lib > -L/home/balay/petsc/arch-linux-c-debug/lib > -Wl,-rpath,/software/mpich-4.1.1/lib -L/software/mpich-4.1.1/lib -Wl,-rpa > > th,/usr/lib/gcc/x86_64-redhat-linux/13 > -L/usr/lib/gcc/x86_64-redhat-linux/13 -lpetsc -llapack -lblas -ltriangle > -lm -lX11 -lmpifort -lmpi -lgfortran -lm -lgfortran -lm -lgcc_s -lquadmath > -lstdc++ -lquadmath > > -o ex2 > > g++: error: unrecognized command-line option ‘-foobar’ > > make: *** [<builtin>: ex2] Error 1 > > balay@pj01:~/test$ make ex2 CXXFLAGS=-foobar > > mpicxx -Wall -Wwrite-strings -Wno-strict-aliasing -Wno-unknown-pragmas > -Wno-lto-type-mismatch -Wno-psabi -fstack-protector -fvisibility=hidden -g > -O0 -foobar -I/home/balay/petsc/include -I/home/balay/petsc/a > > rch-linux-c-debug/include ex2.cpp > -Wl,-rpath,/home/balay/petsc/arch-linux-c-debug/lib > -L/home/balay/petsc/arch-linux-c-debug/lib > -Wl,-rpath,/software/mpich-4.1.1/lib -L/software/mpich-4.1.1/lib -Wl,-rpa > > th,/usr/lib/gcc/x86_64-redhat-linux/13 > -L/usr/lib/gcc/x86_64-redhat-linux/13 -lpetsc -llapack -lblas -ltriangle > -lm -lX11 -lmpifort -lmpi -lgfortran -lm -lgfortran -lm -lgcc_s -lquadmath > -lstdc++ -lquadmath > > -o ex2 > > g++: error: unrecognized command-line option ‘-foobar’ > > make: *** [<builtin>: ex2] Error 1 > > balay@pj01:~/test$ > > > > Satish > > > > On Tue, 9 Jul 2024, Qiyue Lu wrote: > > > > > Hello, > > > I am trying to compile a *.cpp code under PETSc environment. An > additional > > > flag is needed to link the metis partition library. > > > ############## > > > # This line is necessary for linking, remember need this flag in both > > > compiler options and linking options > > > LDFLAGS= -fopenmp -lpmix -lmetis > > > > > > # This line is required for using some 'helper' function like > > > cudaErrorCheck from samples suite > > > CXXFLAGS += > > > > -Wl,-rpath,/sw/spack/deltas11-2023-03/apps/linux-rhel8-zen/gcc-8.5.0/metis-5.1.0-v5iddu2/lib > > > # This two lines are required for using PETSc > > > include ${PETSC_DIR}/lib/petsc/conf/variables > > > include ${PETSC_DIR}/lib/petsc/conf/rules > > > ############## > > > > > > However, adding "CXXFLAGS += -Wl,-rpath, path_to_lib" in the makefile > under > > > the same directory, is not working. And CPPFLAGS and CXXPPFLAGS won't > work > > > either. No errors while compiling, but cannot find the metis.o while > > > running the binary. Another confusing point is, in the compilation > flash > > > screen, LDFLAGS options can be found, but CXXFLAGS cannot. > > > > > > Could you please inform me how to add additional flags in the makefile? > > > > > > Thanks, > > > Qiyue Lu > > > > > > > >
