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# see http://www.kitware.com/products/html/BuildingExternalProjectsWithCMake2.8.html
# see http://tools.cinemapub.be/opendcp/opendcp-0.19-src/contrib/CMakeLists.txt
find_package(OpenSSL)
if (OPENSSL_FOUND)
string(REGEX REPLACE "/include$" "" OPENSSL_ROOT_DIR ${OPENSSL_INCLUDE_DIR})
set(OPENSSL_ROOT_DIR "OPENSSL_DIR=${OPENSSL_ROOT_DIR}")
set(COPY_LIBEVENT_SSL "libevent_openssl.lib")
else()
# essentially a noop to work around externalproject_add syntax
set(COPY_LIBEVENT_SSL "libevent.lib")
endif()
include(ExternalProject)
if (MSVC)
externalproject_add(libevent
URL https://github.com/libevent/libevent/releases/download/release-2.1.8-stable/libevent-2.1.8-stable.tar.gz
URL_MD5 f3eeaed018542963b7d2416ef1135ecc
BUILD_IN_SOURCE 1
PREFIX ${CMAKE_BINARY_DIR}/deps/libevent
CONFIGURE_COMMAND ""
PATCH_COMMAND
${CMAKE_COMMAND} -E copy "${PROJECT_SOURCE_DIR}/contrib/patches/libevent/Makefile.nmake" <SOURCE_DIR>/Makefile.nmake
BUILD_COMMAND nmake ${OPENSSL_ROOT_DIR} -f Makefile.nmake
INSTALL_COMMAND
${CMAKE_COMMAND} -E make_directory ${CMAKE_BINARY_DIR}/deps/libevent/lib &&
${CMAKE_COMMAND} -E copy libevent.lib ${CMAKE_BINARY_DIR}/deps/libevent/lib/ &&
${CMAKE_COMMAND} -E copy libevent_core.lib ${CMAKE_BINARY_DIR}/deps/libevent/lib/ &&
${CMAKE_COMMAND} -E copy libevent_extras.lib ${CMAKE_BINARY_DIR}/deps/libevent/lib/ &&
${CMAKE_COMMAND} -E copy ${COPY_LIBEVENT_SSL} ${CMAKE_BINARY_DIR}/deps/libevent/lib/ &&
${CMAKE_COMMAND} -E copy_directory include ${CMAKE_BINARY_DIR}/deps/libevent/include &&
${CMAKE_COMMAND} -E copy Win32-Code/nmake/event2/event-config.h ${CMAKE_BINARY_DIR}/deps/libevent/include/event2/
)
else ()
if (UNIX)
set(FORCE_FPIC "CFLAGS=-fPIC")
endif()
externalproject_add(libevent
URL https://github.com/libevent/libevent/releases/download/release-2.1.8-stable/libevent-2.1.8-stable.tar.gz
URL_MD5 f3eeaed018542963b7d2416ef1135ecc
BUILD_IN_SOURCE 0
PREFIX ${CMAKE_BINARY_DIR}/deps/libevent
PATCH_COMMAND
${CMAKE_COMMAND} -E copy "${PROJECT_SOURCE_DIR}/contrib/patches/libevent/sierra.kqueue.c" <SOURCE_DIR>/kqueue.c
CONFIGURE_COMMAND
${FORCE_FPIC} <SOURCE_DIR>/configure --enable-static --enable-shared --prefix=<INSTALL_DIR>
)
endif()
set(LIBEVENT_INCLUDE_DIR ${CMAKE_BINARY_DIR}/deps/libevent/include)
if (APPLE)
set(LIBEVENT_LIBRARIES ${CMAKE_BINARY_DIR}/deps/libevent/lib/libevent_core.a)
list (APPEND LIBEVENT_LIBRARIES ${CMAKE_BINARY_DIR}/deps/libevent/lib/libevent_extra.a)
list (APPEND LIBEVENT_LIBRARIES ${CMAKE_BINARY_DIR}/deps/libevent/lib/libevent_pthreads.a)
if (OPENSSL_FOUND)
list (APPEND LIBEVENT_LIBRARIES ${CMAKE_BINARY_DIR}/deps/libevent/lib/libevent_openssl.a)
endif()
elseif (UNIX)
set(LIBEVENT_LIBRARIES ${CMAKE_BINARY_DIR}/deps/libevent/lib/libevent_core.a)
list (APPEND LIBEVENT_LIBRARIES ${CMAKE_BINARY_DIR}/deps/libevent/lib/libevent_extra.a)
list (APPEND LIBEVENT_LIBRARIES ${CMAKE_BINARY_DIR}/deps/libevent/lib/libevent_pthreads.a)
if (OPENSSL_FOUND)
list (APPEND LIBEVENT_LIBRARIES ${CMAKE_BINARY_DIR}/deps/libevent/lib/libevent_openssl.a)
endif()
elseif(WIN32)
set(LIBEVENT_LIBRARIES ${CMAKE_BINARY_DIR}/deps/libevent/lib/libevent.lib)
if (OPENSSL_FOUND)
list (APPEND LIBEVENT_LIBRARIES ${CMAKE_BINARY_DIR}/deps/libevent/lib/libevent_openssl.lib)
endif()
else()
message(FATAL_ERROR "Unknown platform!")
endif()
set(LIBEVENT_BUILT ON)
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