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CMakeLists.txt
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CMakeLists.txt
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# ngtcp2
#
# Copyright (c) 2016 ngtcp2 contributors
# Copyright (c) 2012 nghttp2 contributors
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
cmake_minimum_required(VERSION 3.1)
# Allow setting VISIBILITY_PRESET on static library targets without warning.
cmake_policy(SET CMP0063 NEW)
# XXX using 0.1.90 instead of 0.1.0-DEV
project(ngtcp2 VERSION 0.1.90)
# See versioning rule:
# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
set(LT_CURRENT 0)
set(LT_REVISION 0)
set(LT_AGE 0)
set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" "${CMAKE_MODULE_PATH}")
include(Version)
math(EXPR LT_SOVERSION "${LT_CURRENT} - ${LT_AGE}")
set(LT_VERSION "${LT_SOVERSION}.${LT_AGE}.${LT_REVISION}")
set(PACKAGE_VERSION "${PROJECT_VERSION}")
HexVersion(PACKAGE_VERSION_NUM ${PROJECT_VERSION_MAJOR} ${PROJECT_VERSION_MINOR} ${PROJECT_VERSION_PATCH})
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
set(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "Choose the build type" FORCE)
# Include "None" as option to disable any additional (optimization) flags,
# relying on just CMAKE_C_FLAGS and CMAKE_CXX_FLAGS (which are empty by
# default). These strings are presented in cmake-gui.
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
"None" "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
endif()
include(GNUInstallDirs)
include(CMakeOptions.txt)
# Do not disable assertions based on CMAKE_BUILD_TYPE.
foreach(_build_type "Release" "MinSizeRel" "RelWithDebInfo")
foreach(_lang C CXX)
string(TOUPPER "CMAKE_${_lang}_FLAGS_${_build_type}" _var)
string(REGEX REPLACE "(^| )[/-]D *NDEBUG($| )" "" ${_var} "${${_var}}")
endforeach()
endforeach()
if(ENABLE_GNUTLS)
find_package(GnuTLS 3.6.12)
endif()
if(ENABLE_OPENSSL)
find_package(OpenSSL 1.1.1)
endif()
find_package(Libev 4.11)
find_package(Libnghttp3 0.0.0)
find_package(CUnit 2.1)
enable_testing()
set(HAVE_CUNIT ${CUNIT_FOUND})
if(HAVE_CUNIT)
add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND})
endif()
# openssl (for examples)
include(CMakePushCheckState)
include(CheckSymbolExists)
if(ENABLE_OPENSSL AND OPENSSL_FOUND)
# Until OpenSSL gains mainline support for QUIC, check for a patched version.
cmake_push_check_state()
set(CMAKE_REQUIRED_INCLUDES "${OPENSSL_INCLUDE_DIR}")
set(CMAKE_REQUIRED_LIBRARIES "${OPENSSL_LIBRARIES}")
check_symbol_exists(SSL_is_quic "openssl/ssl.h" HAVE_SSL_IS_QUIC)
if(NOT HAVE_SSL_IS_QUIC)
message(WARNING "Disabling OpenSSL due to lack of QUIC support in ${OPENSSL_LIBRARIES}")
endif()
cmake_pop_check_state()
endif()
if(ENABLE_OPENSSL AND HAVE_SSL_IS_QUIC)
set(OPENSSL_INCLUDE_DIRS ${OPENSSL_INCLUDE_DIR})
set(HAVE_OPENSSL 1)
set(HAVE_CRYPTO 1)
else()
set(OPENSSL_INCLUDE_DIRS "")
set(OPENSSL_LIBRARIES "")
endif()
# libev (for examples)
set(HAVE_LIBEV ${LIBEV_FOUND})
# libnghttp3 (for examples)
set(HAVE_LIBNGHTTP3 ${LIBNGHTTP3_FOUND})
# GnuTLS (required for external https://github.com/ueno/ngtcp2-gnutls-examples)
if(ENABLE_GNUTLS AND GNUTLS_FOUND)
# Until GnuTLS gains mainline support for QUIC, check for a patched version.
cmake_push_check_state()
set(CMAKE_REQUIRED_INCLUDES "${GNUTLS_INCLUDE_DIR}")
set(CMAKE_REQUIRED_LIBRARIES "${GNUTLS_LIBRARIES}")
check_symbol_exists(gnutls_handshake_write "gnutls/gnutls.h" HAVE_GNUTLS_HANDSHAKE_WRITE)
if(NOT HAVE_GNUTLS_HANDSHAKE_WRITE)
message(WARNING "Disabling GnuTLS due to lack of QUIC support in ${GNUTLS_LIBRARIES}")
endif()
cmake_pop_check_state()
endif()
if(ENABLE_GNUTLS AND HAVE_GNUTLS_HANDSHAKE_WRITE)
set(GNUTLS_INCLUDE_DIRS ${GNUTLS_INCLUDE_DIR})
set(HAVE_GNUTLS 1)
set(HAVE_CRYPTO 1)
else()
set(GNUTLS_INCLUDE_DIRS "")
set(GNUTLS_LIBRARIES "")
endif()
# Checks for header files.
include(CheckIncludeFile)
check_include_file("arpa/inet.h" HAVE_ARPA_INET_H)
check_include_file("netinet/in.h" HAVE_NETINET_IN_H)
check_include_file("stddef.h" HAVE_STDDEF_H)
check_include_file("stdint.h" HAVE_STDINT_H)
check_include_file("stdlib.h" HAVE_STDLIB_H)
check_include_file("string.h" HAVE_STRING_H)
check_include_file("unistd.h" HAVE_UNISTD_H)
check_include_file("sys/endian.h" HAVE_SYS_ENDIAN_H)
check_include_file("endian.h" HAVE_ENDIAN_H)
check_include_file("byteswap.h" HAVE_BYTESWAP_H)
include(CheckTypeSize)
# Checks for typedefs, structures, and compiler characteristics.
# AC_TYPE_SIZE_T
check_type_size("ssize_t" SIZEOF_SSIZE_T)
if(SIZEOF_SSIZE_T STREQUAL "")
# ssize_t is a signed type in POSIX storing at least -1.
# Set it to a pointer-size int.
set(ssize_t ptrdiff_t)
endif()
# Checks for symbols.
if(HAVE_ENDIAN_H)
check_symbol_exists(be64toh "endian.h" HAVE_BE64TOH)
endif()
if(HAVE_SYS_ENDIAN_H)
check_symbol_exists(be64toh "sys/endian.h" HAVE_BE64TOH)
endif()
check_symbol_exists(bswap_64 "byteswap.h" HAVE_BSWAP_64)
include(ExtractValidFlags)
set(WARNCFLAGS)
set(WARNCXXFLAGS)
if(CMAKE_C_COMPILER_ID MATCHES "MSVC")
if(ENABLE_WERROR)
set(WARNCFLAGS /WX)
set(WARNCXXFLAGS /WX)
endif()
else()
if(ENABLE_WERROR)
extract_valid_c_flags(WARNCFLAGS -Werror)
extract_valid_c_flags(WARNCXXFLAGS -Werror)
endif()
# For C compiler
extract_valid_c_flags(WARNCFLAGS
-Wall
-Wextra
-Wmissing-prototypes
-Wstrict-prototypes
-Wmissing-declarations
-Wpointer-arith
-Wdeclaration-after-statement
-Wformat-security
-Wwrite-strings
-Wshadow
-Winline
-Wnested-externs
-Wfloat-equal
-Wundef
-Wendif-labels
-Wempty-body
-Wcast-align
-Wclobbered
-Wvla
-Wpragmas
-Wunreachable-code
-Waddress
-Wattributes
-Wdiv-by-zero
-Wshorten-64-to-32
-Wconversion
-Wextended-offsetof
-Wformat-nonliteral
-Wlanguage-extension-token
-Wmissing-field-initializers
-Wmissing-noreturn
-Wmissing-variable-declarations
# Not used because we cannot change public structs
# -Wpadded
-Wsign-conversion
# Not used because this basically disallows default case
# -Wswitch-enum
-Wunreachable-code-break
-Wunused-macros
-Wunused-parameter
-Wredundant-decls
# Only work with Clang for the moment
-Wheader-guard
-Wsometimes-uninitialized
# Only work with gcc7 for the moment
-Wduplicated-branches
# This is required because we pass format string as "const char*.
-Wno-format-nonliteral
)
extract_valid_cxx_flags(WARNCXXFLAGS
# For C++ compiler
-Wall
-Wformat-security
-Wsometimes-uninitialized
# Disable noexcept-type warning of g++-7. This is not harmful as
# long as all source files are compiled with the same compiler.
-Wno-noexcept-type
)
if(ENABLE_ASAN)
cmake_push_check_state()
set(CMAKE_REQUIRED_LIBRARIES "-fsanitize=address")
check_c_compiler_flag(-fsanitize=address C__fsanitize_address_VALID)
check_cxx_compiler_flag(-fsanitize=address CXX__fsanitize_address_VALID)
cmake_pop_check_state()
if(NOT C__fsanitize_address_VALID OR NOT CXX__fsanitize_address_VALID)
message(WARNING "ENABLE_ASAN was requested, but not supported!")
else()
set(CMAKE_C_FLAGS "-fsanitize=address ${CMAKE_C_FLAGS}")
set(CMAKE_CXX_FLAGS "-fsanitize=address ${CMAKE_CXX_FLAGS}")
endif()
endif()
endif()
if(ENABLE_DEBUG)
set(DEBUGBUILD 1)
endif()
add_definitions(-DHAVE_CONFIG_H)
configure_file(cmakeconfig.h.in config.h)
# autotools-compatible names
# Sphinx expects relative paths in the .rst files. Use the fact that the files
# below are all one directory level deep.
file(RELATIVE_PATH top_srcdir "${CMAKE_CURRENT_BINARY_DIR}/dir" "${CMAKE_CURRENT_SOURCE_DIR}")
file(RELATIVE_PATH top_builddir "${CMAKE_CURRENT_BINARY_DIR}/dir" "${CMAKE_CURRENT_BINARY_DIR}")
set(abs_top_srcdir "${CMAKE_CURRENT_SOURCE_DIR}")
set(abs_top_builddir "${CMAKE_CURRENT_BINARY_DIR}")
# libngtcp2.pc (pkg-config file)
set(prefix "${CMAKE_INSTALL_PREFIX}")
set(exec_prefix "${CMAKE_INSTALL_PREFIX}")
set(libdir "${CMAKE_INSTALL_FULL_LIBDIR}")
set(includedir "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
set(VERSION "${PACKAGE_VERSION}")
# For init scripts and systemd service file (in contrib/)
set(bindir "${CMAKE_INSTALL_FULL_BINDIR}")
set(sbindir "${CMAKE_INSTALL_FULL_SBINDIR}")
foreach(name
lib/libngtcp2.pc
lib/includes/ngtcp2/version.h
)
configure_file("${name}.in" "${name}" @ONLY)
endforeach()
include_directories(
"${CMAKE_CURRENT_BINARY_DIR}" # for config.h
)
# For use in src/CMakeLists.txt
set(PKGDATADIR "${CMAKE_INSTALL_FULL_DATADIR}/${CMAKE_PROJECT_NAME}")
install(FILES README.rst DESTINATION "${CMAKE_INSTALL_DOCDIR}")
add_subdirectory(lib)
add_subdirectory(tests)
add_subdirectory(crypto)
add_subdirectory(third-party)
add_subdirectory(examples)
string(TOUPPER "${CMAKE_BUILD_TYPE}" _build_type)
message(STATUS "summary of build options:
Package version: ${VERSION}
Library version: ${LT_CURRENT}:${LT_REVISION}:${LT_AGE}
Install prefix: ${CMAKE_INSTALL_PREFIX}
Target system: ${CMAKE_SYSTEM_NAME}
Compiler:
Build type: ${CMAKE_BUILD_TYPE}
C compiler: ${CMAKE_C_COMPILER}
CFLAGS: ${CMAKE_C_FLAGS_${_build_type}} ${CMAKE_C_FLAGS}
C++ compiler: ${CMAKE_CXX_COMPILER}
CXXFLAGS: ${CMAKE_CXX_FLAGS_${_build_type}} ${CMAKE_CXX_FLAGS}
WARNCFLAGS: ${WARNCFLAGS}
WARNCXXFLAGS: ${WARNCXXFLAGS}
Library:
Shared: ${BUILD_SHARED_LIBS}
Test:
CUnit: ${HAVE_CUNIT} (LIBS='${CUNIT_LIBRARIES}')
Libs:
OpenSSL: ${HAVE_OPENSSL} (LIBS='${OPENSSL_LIBRARIES}')
Libev: ${HAVE_LIBEV} (LIBS='${LIBEV_LIBRARIES}')
Libnghttp3: ${HAVE_LIBNGHTTP3} (LIBS='${LIBNGHTTP3_LIBRARIES}')
GnuTLS: ${HAVE_GNUTLS} (LIBS='${GNUTLS_LIBRARIES}')
")