# cmake_minimum_required(VERSION 3.5.0)

# set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)

# # set root of location to find PETSc's pkg-config
# set(PETSC $ENV{PETSC_DIR}/$ENV{PETSC_ARCH})
# set(ENV{PKG_CONFIG_PATH} ${PETSC}/lib/pkgconfig)

# # Remove the lines below if you do not wish to have PETSc determine the compilers
# execute_process ( COMMAND pkg-config PETSc --variable=ccompiler COMMAND tr -d '\n' OUTPUT_VARIABLE C_COMPILER)
# SET(CMAKE_C_COMPILER ${C_COMPILER})
# execute_process ( COMMAND pkg-config PETSc --variable=cxxcompiler COMMAND tr -d '\n' OUTPUT_VARIABLE CXX_COMPILER)
# if (CXX_COMPILER)
#   SET(CMAKE_CXX_COMPILER ${CXX_COMPILER})
# endif (CXX_COMPILER)
# execute_process ( COMMAND pkg-config PETSc --variable=fcompiler COMMAND tr -d '\n' OUTPUT_VARIABLE FORTRAN_COMPILER)
# if (FORTRAN_COMPILER)
#   SET(CMAKE_Fortran_COMPILER ${FORTRAN_COMPILER})
#   enable_language(Fortran)
# endif (FORTRAN_COMPILER)

# #  tells CMake to build the application ex1 from the source file ex1.c
# #  this must appear AFTER the compilers are set
# project(main)
# add_executable(main main.c)

# find_package(MPI REQUIRED)
# include_directories(${MPI_INCLUDE_PATH})

# find_package(PkgConfig REQUIRED)
# pkg_search_module(PETSC REQUIRED IMPORTED_TARGET PETSc)
# target_link_libraries(main PkgConfig::PETSC)

cmake_minimum_required(VERSION 3.5.0)

set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)

# Set root of location to find PETSc's pkg-config
set(PETSC $ENV{PETSC_DIR}/$ENV{PETSC_ARCH})
set(ENV{PKG_CONFIG_PATH} ${PETSC}/lib/pkgconfig)

# Remove the lines below if you do not wish to have PETSc determine the compilers
SET(CMAKE_C_COMPILER gcc)
SET(CMAKE_CXX_COMPILER g++)
SET(CMAKE_Fortran_COMPILER gfortran)
enable_language(Fortran)

# Tells CMake to build the application ex1 from the source file ex1.c
# This must appear AFTER the compilers are set
project(main)
add_executable(main main.c)

find_package(MPI REQUIRED)
find_package(PkgConfig REQUIRED)

pkg_search_module(PETSC REQUIRED IMPORTED_TARGET PETSc)
target_link_libraries(main MPI::MPI_C MPI::MPI_CXX MPI::MPI_Fortran PkgConfig::PETSC)