I have followed the steps described here to install Sniffles on my Mac Book Pro running macOS High Sierra.
However, I am struggling with this step:
cmake -D CMAKE_C_COMPILER=/opt/local/bin/gcc-mp-4.7 -D CMAKE_CXX_COMPILER=/opt/local/bin/g++-mp-4.7 ..
I do not have an /opt folder, so I get the following output:
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:2 (project):
The CMAKE_C_COMPILER:
/opt/local/bin/gcc-mp-4.7
is not a full path to an existing compiler tool.
Tell CMake where to find the compiler by setting either the environment
variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
the compiler, or to the compiler name if it is in the PATH.
CMake Error at CMakeLists.txt:2 (project):
The CMAKE_CXX_COMPILER:
/opt/local/bin/g++-mp-4.7
is not a full path to an existing compiler tool.
Tell CMake where to find the compiler by setting either the environment
variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
to the compiler, or to the compiler name if it is in the PATH.
-- Configuring incomplete, errors occurred!
See also "/Users/xxx/Documents/xxx/xxx/Sniffles-master/build/CMakeFiles/CMakeOutput.log".
See also "/Users/xxx/Documents/xxx/xxx/Sniffles-master/build/CMakeFiles/CMakeError.log".
Unsurprisingly, the error file says that /opt/local/bin/gcc-mp-4.7 does not exist.
So I tried:
cmake -D CMAKE_C_COMPILER=/usr/bin/gcc -D CMAKE_CXX_COMPILER=/usr/bin/gcc ..
I get another long message but the most important bit is:
CMake Error at /usr/local/Cellar/cmake/3.8.1/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:137 (message):
Could NOT find OpenMP (missing: OpenMP_C_FLAGS OpenMP_CXX_FLAGS)
I do not know what to do to solve this error.
I do have gcc here: /usr/bin/gcc and cmake version 3.8.1.
I have created an issue on the Sniffles GitHub repository.
Update 13th June 2018
I installed the latest version of gcc:
brew install gcc
Warning: gcc 8.1.0 is already installed and up-to-date
To reinstall 8.1.0, run `brew reinstall gcc`
Then, I tried to make cmake use gcc and g++ in the /usr/local/bin folder.
cmake -D CMAKE_C_COMPILER=/usr/local/bin/gcc-8 -D CMAKE_CXX_COMPILER=/usr/local/bin/g++-8 ..
This recreated the same problem:
CMake Error at /usr/local/Cellar/cmake/3.8.1/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:137 (message):
Could NOT find OpenMP (missing: OpenMP_C_FLAGS OpenMP_CXX_FLAGS)
Do I need to set the OpenMP_C*_FLAGS to something?