CODEWITHSUNDEEP
clinuxcompilationcmakecross-platform
syb0rg
syb0rg

Reputation: 8247

CMake works on Mac, but not Linux?

I have the following CMakeLists.txt:

cmake_minimum_required (VERSION 2.8.7)
project (Test)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/")

find_package(CURL REQUIRED)
find_package(PortAudio REQUIRED)
find_package(LibSndFile REQUIRED)

include_directories(src/audio src/web)
set(LIBS ${LIBS} ${LIBSNDFILE_LIBRARY} ${PORTAUDIO_LIBRARIES} ${CURL_LIBRARIES})
file(GLOB_RECURSE sources ${PROJECT_SOURCE_DIR}/src/*.c)

add_executable(Test ${sources})
target_link_libraries(Test ${LIBS})

Here is what my folder structure looks like:

Test/
├── .gitignore
├── README
├── CMakeLists.txt
├── src/
│   ├── audio/
│   │   └── ...
│   ├── web/
│   │   └── ...
│   └── ...
├── build/
└── cmake/
    ├── FindLibSndFile.cmake
    └── FindPortaudio.cmake

When I go to compile my program on a Mac, I go into the build/ directory and run cmake .., to which the program generates:

-- The C compiler identification is Clang 5.1.0
-- The CXX compiler identification is Clang 5.1.0
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Found CURL: /usr/lib/libcurl.dylib (found version "7.30.0") 
-- Found PkgConfig: /usr/local/bin/pkg-config (found version "0.28") 
-- checking for module 'portaudio-2.0'
--   found portaudio-2.0, version 19
-- Found LibSndFile: /usr/local/lib/libsndfile.dylib
-- Configuring done
-- Generating done
-- Build files have been written to: Development/Test/build

Everything runs fine and dandy. But when I copy the source over to my Raspberry Pi and repeat the above steps, it spits this out at me:

-- The C compiler identification is GNU 4.6.3
-- The CXX compiler identification is GNU 4.6.3
-- Check for working C compiler: /usr/bin/gcc
-- Check for working C compiler: /usr/bin/gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Found CURL: /usr/lib/arm-linux-gnueabihf/libcurl.so (found version "7.26.0") 
CMake Error at CMakeLists.txt:7 (find_package):
  By not providing "FindPortAudio.cmake" in CMAKE_MODULE_PATH this project
  has asked CMake to find a package configuration file provided by
  "PortAudio", but CMake did not find one.

  Could not find a package configuration file provided by "PortAudio" with
  any of the following names:

    PortAudioConfig.cmake
    portaudio-config.cmake

  Add the installation prefix of "PortAudio" to CMAKE_PREFIX_PATH or set
  "PortAudio_DIR" to a directory containing one of the above files.  If
  "PortAudio" provides a separate development package or SDK, be sure it has
  been installed.


-- Configuring incomplete, errors occurred!

I'm not too sure why it isn't working. Any suggestions?

Upvotes: 1

Views: 1079

Answers (1)

Josh
Josh

Reputation: 121

Macs are case insensitive while other operating systems are generally case sensitive. To solve this problem, either change the file name of FindPortaudio.cmake --> FindPortAudio.cmake (notice the capital A in audio). Or in the CMakeLists.txt file, change the A in audio to a lowercase character. i.e., change 

find_package(PortAudio REQUIRED)

to

find_package(Portaudio REQUIRED)

Upvotes: 3

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