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Use system-provided nanomsg if available #88

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Use system-provided nanomsg if available #88

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35 changes: 19 additions & 16 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -60,22 +60,25 @@ add_subdirectory(vendor/libcorrect EXCLUDE_FROM_ALL)
add_subdirectory(vendor/libaec EXCLUDE_FROM_ALL)
add_subdirectory(vendor/json EXCLUDE_FROM_ALL)

# Build nanomsg
option(NN_STATIC_LIB "Build nanomsg as static library." ON)
option(NN_ENABLE_DOC "Build nanomsg documentation." OFF)
option(NN_TESTS "Build nanomsg tests" OFF)
option(NN_TOOLS "Build nanomsg tools" OFF)
add_subdirectory(vendor/nanomsg EXCLUDE_FROM_ALL)

# Symlink vendor/nanomsg/src such that we can still use the "nanomsg"
# include path and not conflict with system includes (e.g. protocol.h).
execute_process(COMMAND
${CMAKE_COMMAND} -E make_directory
${PROJECT_BINARY_DIR}/include)
execute_process(COMMAND
${CMAKE_COMMAND} -E create_symlink
${PROJECT_SOURCE_DIR}/vendor/nanomsg/src
${PROJECT_BINARY_DIR}/include/nanomsg)
find_package(nanomsg QUIET)
if(NOT ${nanomsg_FOUND})
# Build nanomsg
option(NN_STATIC_LIB "Build nanomsg as static library." ON)
option(NN_ENABLE_DOC "Build nanomsg documentation." OFF)
option(NN_TESTS "Build nanomsg tests" OFF)
option(NN_TOOLS "Build nanomsg tools" OFF)
add_subdirectory(vendor/nanomsg EXCLUDE_FROM_ALL)

# Symlink vendor/nanomsg/src such that we can still use the "nanomsg"
# include path and not conflict with system includes (e.g. protocol.h).
execute_process(COMMAND
${CMAKE_COMMAND} -E make_directory
${PROJECT_BINARY_DIR}/include)
execute_process(COMMAND
${CMAKE_COMMAND} -E create_symlink
${PROJECT_SOURCE_DIR}/vendor/nanomsg/src
${PROJECT_BINARY_DIR}/include/nanomsg)
endif()

include_directories(BEFORE SYSTEM ${PROJECT_BINARY_DIR}/include)
include_directories(BEFORE SYSTEM ${PROJECT_SOURCE_DIR}/vendor/libcorrect/include)
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