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rocm-systems/samples/2_Cookbook/19_cmake_lang/README.md
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ROCm CI Service Account 30fcf2f17c SWDEV-402093 - Updated README to use AMDGPU_TARGETS=native to enable compiler autodetection (#378)
Change-Id: I33a71d12b5b883eacac706725322bc13e0d57852
2023-08-14 21:26:49 +05:30

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### This will test cmake lang support: CXX and Fortran
I. Prepare
1) You must install cmake version 3.18 or above to support LINK_LANGUAGE.
Otherwise, Fortran build will fail.
To download the latest cmake, see https://cmake.org/download/.
2) If there is no Fortran on your system, you must install it via,
sudo apt install gfortran
II. Build
```
mkdir -p build; cd build
rm -rf *;
CXX="$(hipconfig -l)"/clang++ FC=$(which gfortran) cmake -DCMAKE_PREFIX_PATH=/opt/rocm ..
cmake ..
make
```
Note, users may need to add AMD GPU support, if test failed, for example,
```
CXX="$(hipconfig -l)"/clang++ FC=$(which gfortran) cmake -DCMAKE_PREFIX_PATH=/opt/rocm -DAMDGPU_TARGETS="gfx1102" ..
```
To enable compiler auto detection of gpu users may need to add ADMGPU support as command line option,
if test failed to run, for example,
```
CXX="$(hipconfig -l)"/clang++ FC=$(which gfortran) cmake -DCMAKE_PREFIX_PATH=/opt/rocm -DAMDGPU_TARGETS=native ..
```
III. Test
```
./test_fortran
Succeeded testing Fortran!
./test_cpp
Device name AMD Radeon Graphics
PASSED!
```