How to mix compile HIP and Fortran using CMake - cmake

Question

I don't know how to mix HIP compilation and Fortran using CMake. The follow is a demo.
I have 3 files:
fcode.f90
SUBROUTINE fcode()
implicit double precision (a-h, o-z)
parameter (M=64)
dimension x(M),y(M),z(M)
do k=1, M
x(k) = 1.0
y(k) = 2.0
z(k) = 0.0
end do
call hipcode(x,y,z,M)
do k = 1, M
if ( z(k) .ne. 3.0 ) then
write(6,*) 'u fail !'
return
endif
end do
write(6,*)' PASSED !'
return
end
hipcode.cpp
#include <hip/hip_runtime.h>
#define HIP_ASSERT(status) assert(status == hipSuccess)
__global__ void add(double *x, double *y, double *z, const unsigned int M) {
z[threadIdx.x] = x[threadIdx.x] + y[threadIdx.x];
}
extern "C" void hipcode_(double *h_x, double *h_y, double *h_z, int &M) {
HIP_ASSERT(hipSetDevice(0));
double *d_x, *d_y, *d_z;
HIP_ASSERT(hipMalloc((void **)&d_x, M * sizeof(double)));
HIP_ASSERT(hipMalloc((void **)&d_y, M * sizeof(double)));
HIP_ASSERT(hipMalloc((void **)&d_z, M * sizeof(double)));
HIP_ASSERT(hipMemcpy(d_x, h_x, M * sizeof(double), hipMemcpyHostToDevice));
HIP_ASSERT(hipMemcpy(d_y, h_y, M * sizeof(double), hipMemcpyHostToDevice));
HIP_ASSERT(hipMemcpy(d_z, h_z, M * sizeof(double), hipMemcpyHostToDevice));
hipLaunchKernelGGL(add, 1, 64, 0, 0, d_x, d_y, d_z, M);
HIP_ASSERT(hipMemcpy(h_z, d_z, M * sizeof(double), hipMemcpyDeviceToHost));
hipFree(d_x);
hipFree(d_y);
hipFree(d_z);
}
main.f90
call fcode()
stop
end
and I write a Makefile to compile it, it works. But I don't know how to use cmake to do this.
OBJS=main.o fcode.o hipcode.o
FC=gfortran
HIPCC=hipcc
FCFLAGS=-c
HIPCCFLAGS=-c
LDFLAGS=-lgfortran
all :
$(HIPCC) $(HIPCCFLAGS) hipcode.cpp
$(FC) $(FCFLAGS) fcode.f90
$(FC) $(FCFLAGS) main.f90
$(HIPCC) $(OBJS) $(LDFLAGS) -o test
Here is my CMakeLists.txt
cmake_minimum_required(VERSION 3.15)
project(test LANGUAGES Fortran CXX)
# source file: hipcode.cpp fcode.f90 main.f90
# target:
# hipcc -c hipcode.cpp
# gfortran -c fcode.f90
# gfortran -c main.f90
# hipcc hipcode.o fcode.o main.o -lgfortran -o test
set(sources_list hipcode.cpp)
set(raw_sources_list_f90 fcode.f90)
# find hip
find_package(HIP QUIET)
set(CMAKE_HIP_FLAGS "${CMAKE_CXX_FLAGS} -D__HIP_PLATFORM_HCC__ --offload-arch=gfx906")
set(HIP_CLANG_FLAGS "${HIP_CLANG_FLAG} --hip-link")
set_source_files_properties(${sources_list} PROPERTIES HIP_SOURCE_PROPERTY_FORMAT 1)
set(MY_SOURCE_FILES ${sources_list})
set(MY_TARGET_NAME hipcode)
set(MY_HIPCC_OPTIONS "--hip-link")
set(HIP_TARGET_LINK_LIB "rocm/hip/lib/libamdhip64.so" )
set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -x hip -fgpu-rdc --hip-link -std=c++14 -g")
set(CMAKE_CXX_COMPILER "hipcc")
set(CMAKE_HIP_FLAFS "${CMAKE_HIP_FLAGS} --hip-link")
set(CMAKE_HIP_LINKER_WRAPPER_FLAG "--hip-link")
set(CMAKE_CXX_LINK_FLAGS " -fgpu-rdc --hip-link -std=c++14 ")
set(HIP_HIPCC_CMAKE_LINKER_HELPER "hipcc")
set(HIP_CLANG_PATH " ")
set(HIP_CLANG_PARALLEL_BUILD_LINK_OPTIONS " ")
add_library(${MY_TARGET_NAME} ${MY_SOURCE_FILES})
target_link_libraries(${MY_TARGET_NAME} ${HIP_TARGET_LINK_LIB} )
add_library(fcodef90 STATIC ${raw_sources_list_f90})
target_link_libraries(fcodef90 hipcode)
I use CXX=hipcc cmake .. && make -j to build the demo, and it passed.
But then I got an error: "undefined reference to `hipcode_'", so how to modify the CMakeLists.txt?

Answer 1

First of all thank you again, after use nm, I realized that maybe I need to add separate compilation options, then I found answer here, all right, thank you very much!
And the final compiled command is
gfortran -c main.f90
hipcc -fgpu-rdc --hip-link main.o libfcode.a libhipcode.a -lgfortran