Dear SLEPc Developers,
I a am student from Tongji University. Recently I am trying to write a c++
program for matrix solving, which requires importing the PETSc library that you
have developed. However a lot of errors occur in the cpp file when I use
#include <petscts.h> directly. I also try to use extern "C" but it gives me the
error in the picture below. Is there a good way to use the PETSc library in a
c++ program? (I compiled using cmake and my compiler is g++ (GCC) 4.8.5
20150623 (Red Hat 4.8.5-44)).
My cmakelists.txt is:
cmake_minimum_required(VERSION 3.1.0)
set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
set(PETSC $ENV{PETSC_DIR}/$ENV{PETSC_ARCH})
set(SLEPC $ENV{SLEPC_DIR}/$ENV{PETSC_ARCH})
set(ENV{PKG_CONFIG_PATH} ${PETSC}/lib/pkgconfig:${SLEPC}/lib/pkgconfig)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")
project(test)
add_executable(${PROJECT_NAME} eigen_test2.cpp)
find_package(PkgConfig REQUIRED)
pkg_search_module(PETSc REQUIRED IMPORTED_TARGET PETSc)
target_link_libraries(${PROJECT_NAME} PkgConfig::PETSc)
The testing code is:eigen_test2.cpp
extern "C"{
//#include <petsc.h>
#include <petscts.h>
#include <petscdm.h>
#include <petscdmda.h>
#include <petscdraw.h>
}
int main(int argc,char **argv)
{
return 0;
}
Best regards
Weijie Xu
