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libwebsockets/CMakeLists.txt
Joakim Soderberg 7df9908148 Added build instructions for CMake. 
Also changed it so that specifying the include directories for CyaSSL is nicer.
2013-02-07 20:24:19 +08:00

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CMake
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cmake_minimum_required(VERSION 2.6)
project(libwebsockets)
set(PACKAGE "libwebsockets")
set(PACKAGE_VERSION "1.1")
set(PACKAGE_BUGREPORT "andy@warmcat.com")
set(PACKAGE_NAME "${PACKAGE}")
set(PACKAGE_STRING "${PACKAGE} ${PACKAGE_VERSION}")
set(PACKAGE_TARNAME "${PACKAGE}")
set(PACKAGE_URL "http://libwebsockets.org")
set(VERSION "{PACKAGE_VERSION}")
set(LWS_LIBRARY_VERSION ${PACKAGE_VERSION})
# Try to find the current Git hash.
find_package(Git)
if(GIT_EXECUTABLE)
execute_process(
COMMAND "${GIT_EXECUTABLE}" log -n 1 --pretty=%h
OUTPUT_VARIABLE GIT_HASH
OUTPUT_STRIP_TRAILING_WHITESPACE
)
set(LWS_BUILD_HASH ${GIT_HASH})
message("Git commit hash: ${LWS_BUILD_HASH}")
endif()
option(WITH_SSL "Include SSL support (default OpenSSL, CyaSSL if USE_CYASSL is set)" ON)
option(USE_EXTERNAL_ZLIB "Search the system for ZLib instead of using the included one (on Windows)" OFF)
option(USE_CYASSL "Use CyaSSL replacement for OpenSSL. When settings this, you also need to specify CYASSL_LIB and CYASSL_INCLUDE_DIRS" OFF)
option(WITH_BUILTIN_GETIFADDRS "Use BSD getifaddrs implementation from libwebsockets... default is your libc provides it" OFF)
option(WITHOUT_TESTAPPS "Don't build the libwebsocket-test-apps" OFF)
option(WITHOUT_CLIENT "Don't build the client part of the library" OFF)
option(WITHOUT_SERVER "Don't build the server part of the library" OFF)
option(WITHOUT_SERVER_EXTPOLL "Don't build a server version that uses external poll" OFF)
option(WITH_LIBCRYPTO "Use libcrypto MD5 and SHA1 implementations" ON)
option(WITHOUT_PING "Don't build the ping test application" OFF)
option(WITHOUT_DEBUG "Don't compile debug related code" OFF)
option(WITHOUT_EXTENSIONS "Don't compile with extensions" OFF)
option(WITH_LATENCY "Build latency measuring code into the library" OFF)
option(WITHOUT_DAEMONIZE "Don't build the daemonization api" OFF)
# The base dir where the SSL dirs should be looked for.
set(SSL_CERT_DIR CACHE STRING "")
set(SSL_CLIENT_CERT_DIR CACHE STRING "")
if ("${SSL_CERT_DIR}" STREQUAL "")
set(SSL_CERT_DIR ".")
endif()
if ("${SSL_CLIENT_CERT_DIR}" STREQUAL "")
set(LWS_OPENSSL_CLIENT_CERTS ".")
else()
set(LWS_OPENSSL_CLIENT_CERTS "${SSL_CLIENT_CERT_DIR}")
endif()
set(CYASSL_LIB CACHE STRING "")
set(CYASSL_INCLUDE_DIRS CACHE STRING "")
if (USE_CYASSL)
if ("${CYASSL_LIB}" STREQUAL "" OR "${CYASSL_INCLUDE_DIRS}" STREQUAL "")
message(FATAL_ERROR "You must set CYASSL_LIB and CYASSL_INCLUDE_DIRS when USE_CYASSL is turned on")
endif()
endif()
if (WITHOUT_EXTENSIONS)
set(LWS_NO_EXTENSIONS 1)
endif()
if (WITH_SSL)
set(LWS_OPENSSL_SUPPORT 1)
endif()
if (WITH_LATENCY)
set(LWS_LATENCY 1)
endif()
if (WITHOUT_DAEMONIZE)
set(LWS_NO_DAEMONIZE 1)
endif()
if (WITHOUT_SERVER)
set(LWS_NO_SERVER 1)
endif()
if (WITHOUT_CLIENT)
set(LWS_NO_CLIENT 1)
endif()
if (MINGW)
set(LWS_MINGW_SUPPORT 1)
endif()
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/cmake/")
include_directories(${PROJECT_BINARY_DIR})
include(CheckCSourceCompiles)
# Check for different inline keyword versions.
foreach(KEYWORD "inline" "__inline__" "__inline")
set(CMAKE_REQUIRED_DEFINITIONS "-DKEYWORD=${KEYWORD}")
CHECK_C_SOURCE_COMPILES(
"
#include <stdio.h>
KEYWORD void a() {}
int main(int argc, char **argv) { a(); return 0; }
" HAVE_${KEYWORD})
endforeach()
if (NOT HAVE_inline)
if (HAVE___inline__)
set(inline __inline__)
elseif(HAVE___inline)
set(inline __inline)
endif()
endif()
# Put the libaries and binaries that get built into directories at the
# top of the build tree rather than in hard-to-find leaf directories.
SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin)
SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/lib)
SET(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/lib)
# So we can include the CMake generated config file only when
# building with CMAKE.
add_definitions(-DCMAKE_BUILD)
include(CheckFunctionExists)
include(CheckIncludeFile)
include(CheckIncludeFiles)
include(CheckLibraryExists)
CHECK_FUNCTION_EXISTS(bzero HAVE_BZERO)
CHECK_FUNCTION_EXISTS(fork HAVE_FORK)
CHECK_FUNCTION_EXISTS(malloc HAVE_MALLOC)
CHECK_FUNCTION_EXISTS(memset HAVE_MEMSET)
CHECK_FUNCTION_EXISTS(realloc HAVE_REALLOC)
CHECK_FUNCTION_EXISTS(socket HAVE_SOCKET)
CHECK_FUNCTION_EXISTS(strerror HAVE_STRERROR)
CHECK_FUNCTION_EXISTS(vfork HAVE_VFORK)
CHECK_FUNCTION_EXISTS(getifaddrs HAVE_GETIFADDRS)
if (WITH_BUILTIN_GETIFADDRS)
if (HAVE_GETIFADDRS)
warning("getifaddrs already exists on the system, are you sure you want to build using the BSD version? (This is normally only needed on systems running uclibc)")
endif()
set(LWS_BUILTIN_GETIFADDRS 1)
endif()
CHECK_INCLUDE_FILE(dlfcn.h HAVE_DLFCN_H)
CHECK_INCLUDE_FILE(fcntl.h HAVE_FCNTL_H)
CHECK_INCLUDE_FILE(inttypes.h HAVE_INTTYPES_H)
CHECK_INCLUDE_FILE(memory.h HAVE_MEMORY_H)
CHECK_INCLUDE_FILE(netinet/in.h HAVE_NETINET_IN_H)
CHECK_INCLUDE_FILE(stdint.h HAVE_STDINT_H)
CHECK_INCLUDE_FILE(stdlib.h HAVE_STDLIB_H)
CHECK_INCLUDE_FILE(strings.h HAVE_STRINGS_H)
CHECK_INCLUDE_FILE(string.h HAVE_STRING_H)
CHECK_INCLUDE_FILE(sys/prctl.h HAVE_SYS_PRCTL_H)
CHECK_INCLUDE_FILE(sys/socket.h HAVE_SYS_SOCKET_H)
CHECK_INCLUDE_FILE(sys/stat.h HAVE_SYS_STAT_H)
CHECK_INCLUDE_FILE(sys/types.h HAVE_SYS_TYPES_H)
CHECK_INCLUDE_FILE(unistd.h HAVE_UNISTD_H)
CHECK_INCLUDE_FILE(vfork.h HAVE_VFORK_H)
CHECK_INCLUDE_FILE(zlib.h HAVE_ZLIB_H)
# TODO: These can be tested if they actually work also...
set(HAVE_WORKING_FORK HAVE_FORK)
set(HAVE_WORKING_VFORK HAVE_VFORK)
CHECK_INCLUDE_FILES("stdlib.h;stdarg.h;string.h;float.h" STDC_HEADERS)
if (NOT HAVE_SYS_TYPES_H)
set(pid_t int)
set(size_t "unsigned int")
endif()
if (NOT HAVE_MALLOC)
set(malloc rpl_malloc)
endif()
if (NOT HAVE_REALLOC)
set(realloc rpl_realloc)
endif()
# Generate the config.h that includes all the compilation settings.
configure_file(
${PROJECT_SOURCE_DIR}/config.h.cmake
${PROJECT_BINARY_DIR}/lws_config.h)
set(LIB_LIST)
if (MSVC)
# Turn off stupid microsoft security warnings.
add_definitions(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE)
endif()
include_directories(${PROJECT_SOURCE_DIR}/lib)
# Group headers and sources.
# Some IDEs use this for nicer file structure.
set(HDR_PRIVATE
lib/private-libwebsockets.h
lib/extension-deflate-frame.h
lib/extension-deflate-stream.h
${PROJECT_BINARY_DIR}/lws_config.h
)
set(HDR_PUBLIC
lib/libwebsockets.h
)
set(SOURCES
lib/base64-decode.c
lib/client.c
lib/client-handshake.c
lib/client-parser.c
lib/extension.c
lib/extension-deflate-frame.c
lib/extension-deflate-stream.c
lib/handshake.c
lib/libwebsockets.c
lib/minilex.c
lib/output.c
lib/parsers.c
lib/server.c
lib/server-handshake.c
lib/sha-1.c
)
# Add helper files for Windows.
if (WIN32)
set(WIN32_HELPERS_PATH win32port/win32helpers)
list(APPEND HDR_PRIVATE
${WIN32_HELPERS_PATH}/websock-w32.h
${WIN32_HELPERS_PATH}/gettimeofday.h
)
list(APPEND SOURCES
${WIN32_HELPERS_PATH}/websock-w32.c
${WIN32_HELPERS_PATH}/gettimeofday.c
)
include_directories(${WIN32_HELPERS_PATH})
else()
# Unix.
if (NOT WITHOUT_DAEMONIZE)
list(APPEND SOURCES
lib/daemonize.c
)
endif()
endif()
if (UNIX)
if (!WITH_BUILTIN_GETIFADDRS)
list(APPEND HDR_PRIVATE lib/getifaddrs.h)
list(APPEND SOURCES lib/getifaddrs.c)
endif()
endif()
source_group("Headers Private" FILES ${HDR_PRIVATE})
source_group("Headers Public" FILES ${HDR_PUBLIC})
source_group("Sources" FILES ${SOURCES})
#
# Create the lib.
#
add_library(websockets STATIC
${HDR_PRIVATE}
${HDR_PUBLIC}
${SOURCES})
#
# Find libraries.
#
#
# ZLIB.
#
if (WIN32 AND NOT USE_EXTERNAL_ZLIB)
message("Using included Zlib version")
# Compile ZLib if needed.
set(WIN32_ZLIB_PATH "win32port/zlib")
set(ZLIB_SRCS
${WIN32_ZLIB_PATH}/adler32.c
${WIN32_ZLIB_PATH}/compress.c
${WIN32_ZLIB_PATH}/crc32.c
${WIN32_ZLIB_PATH}/deflate.c
${WIN32_ZLIB_PATH}/gzclose.c
${WIN32_ZLIB_PATH}/gzio.c
${WIN32_ZLIB_PATH}/gzlib.c
${WIN32_ZLIB_PATH}/gzread.c
${WIN32_ZLIB_PATH}/gzwrite.c
${WIN32_ZLIB_PATH}/infback.c
${WIN32_ZLIB_PATH}/inffast.c
${WIN32_ZLIB_PATH}/inflate.c
${WIN32_ZLIB_PATH}/inftrees.c
${WIN32_ZLIB_PATH}/trees.c
${WIN32_ZLIB_PATH}/uncompr.c
${WIN32_ZLIB_PATH}/zutil.c
)
# Create the library.
add_library(ZLIB STATIC ${ZLIB_SRCS})
# Set the same variables as find_package would.
set(ZLIB_INCLUDE_DIRS ${WIN32_ZLIB_PATH})
get_property(ZLIB_LIBRARIES TARGET ZLIB PROPERTY LOCATION)
set(ZLIB_FOUND 1)
else()
find_package(ZLIB REQUIRED)
endif()
message("ZLib include dirs: ${ZLIB_INCLUDE_DIRS}")
message("ZLib libraries: ${ZLIB_LIBRARIES}")
include_directories(${ZLIB_INCLUDE_DIRS})
target_link_libraries(websockets ${ZLIB_LIBRARIES})
#
# OpenSSL
#
if (WITH_SSL)
message("Compiling with SSL support")
if (USE_CYASSL)
# Use CyaSSL as OpenSSL replacement.
# TODO: Add a find_package command for this also.
message("CyaSSL include dir: ${CYASSL_INCLUDE_DIRS}")
message("CyaSSL libraries: ${CYASSL_LIB}")
# Additional to the root directory we need to include
# the cyassl/ subdirectory which contains the OpenSSL
# compatability layer headers.
foreach(inc ${CYASSL_INCLUDE_DIRS})
include_directories(${inc} ${inc}/cyassl)
endforeach()
target_link_libraries(websockets ${CYASSL_LIB})
else()
# TODO: Add support for STATIC also.
find_package(OpenSSL REQUIRED)
message("OpenSSL include dir: ${OPENSSL_INCLUDE_DIR}")
message("OpenSSL libraries: ${OPENSSL_LIBRARIES}")
include_directories(${OPENSSL_INCLUDE_DIR})
target_link_libraries(websockets ${OPENSSL_LIBRARIES})
endif()
endif(WITH_SSL)
#
# Platform specific libs.
#
if (WIN32)
target_link_libraries(websockets ws2_32.lib)
endif()
if (UNIX)
target_link_libraries(websockets m)
endif()
#
# Test applications
#
if (NOT WITHOUT_TESTAPPS)
#
# Helper function for adding a test app.
#
function(create_test_app TEST_NAME MAIN_SRC WIN32_SRCS WIN32_HDRS)
set(TEST_SRCS ${MAIN_SRC})
set(TEST_HDR)
if (WIN32)
list(APPEND TEST_SRCS
${WIN32_HELPERS_PATH}/getopt.c
${WIN32_HELPERS_PATH}/getopt_long.c
${WIN32_HELPERS_PATH}/gettimeofday.c
${WIN32_SRCS})
list(APPEND TEST_HDR
${WIN32_HELPERS_PATH}/getopt.h
${WIN32_HELPERS_PATH}/gettimeofday.h
${WIN32_HDRS})
endif(WIN32)
source_group("Headers" FILES ${TEST_HDR})
source_group("Sources" FILES ${TEST_SRCS})
add_executable(${TEST_NAME} ${TEST_SRCS} ${TEST_HDR})
target_link_libraries(${TEST_NAME} websockets)
set_property(
TARGET ${TEST_NAME}
PROPERTY COMPILE_DEFINITIONS INSTALL_DATADIR="${SSL_CERT_DIR}"
)
endfunction()
#
# test-client
#
if (NOT WITHOUT_CLIENT)
create_test_app(test-client
"test-server/test-client.c"
""
"")
endif()
#
# test-server
#
if (NOT WITHOUT_SERVER)
create_test_app(test-server
"test-server/test-server.c"
""
"${WIN32_HELPERS_PATH}/netdb.h;${WIN32_HELPERS_PATH}/strings.h;${WIN32_HELPERS_PATH}/unistd.h;${WIN32_HELPERS_PATH}/websock-w32.h")
endif()
#
# test-server-extpoll
#
if (NOT WITHOUT_SERVER AND NOT WITHOUT_SERVER_EXTPOLL)
create_test_app(test-server-extpoll
"test-server/test-server.c"
""
"${WIN32_HELPERS_PATH}/netdb.h;${WIN32_HELPERS_PATH}/strings.h;${WIN32_HELPERS_PATH}/unistd.h;${WIN32_HELPERS_PATH}/websock-w32.h")
# Set defines for this executable only.
set_property(
TARGET test-server-extpoll
PROPERTY COMPILE_DEFINITIONS EXTERNAL_POLL INSTALL_DATADIR="${SSL_CERT_DIR}"
)
endif()
#
# test-fraggle
#
if (NOT WITHOUT_FRAGGLE)
create_test_app(test-fraggle
"test-server/test-fraggle.c"
""
"${WIN32_HELPERS_PATH}/unistd.h;${WIN32_HELPERS_PATH}/sys/time.h")
endif()
#
# test-ping
#
if (NOT WITHOUT_PING)
create_test_app(test-ping
"test-server/test-ping.c"
""
"${WIN32_HELPERS_PATH}/unistd.h;${WIN32_HELPERS_PATH}/sys/time.h")
endif()
#
# Copy OpenSSL dlls to the output directory on Windows.
# (Otherwise we'll get an error when trying to run)
#
if (WIN32 AND WITH_SSL AND NOT USE_CYASSL)
message("Searching for OpenSSL dlls")
find_package(OpenSSLbins)
if(OPENSSL_BIN_FOUND)
message("OpenSSL dlls found, copying to output directory")
message("Libeay: ${LIBEAY_BIN}")
message("SSLeay: ${SSLEAY_BIN}")
foreach(TARGET_BIN
test-client
test-server
test-fraggle
test-echo
test-ping
)
add_custom_command(TARGET ${TARGET_BIN}
POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy ${LIBEAY_BIN} $<TARGET_FILE_DIR:${TARGET_BIN}> VERBATIM)
add_custom_command(TARGET ${TARGET_BIN}
POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy ${SSLEAY_BIN} $<TARGET_FILE_DIR:${TARGET_BIN}> VERBATIM)
endforeach()
endif()
endif()
endif(NOT WITHOUT_TESTAPPS)
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