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#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
set(LIB_NAME "libcurl")
set(LIBCURL_OUTPUT_NAME "libcurl" CACHE STRING "Basename of the curl library")
add_definitions("-DBUILDING_LIBCURL")
configure_file("curl_config.h.cmake" "${CMAKE_CURRENT_BINARY_DIR}/curl_config.h")
# Get 'CSOURCES', 'HHEADERS' variables
transform_makefile_inc("Makefile.inc" "${CMAKE_CURRENT_BINARY_DIR}/Makefile.inc.cmake")
include("${CMAKE_CURRENT_BINARY_DIR}/Makefile.inc.cmake")
# DllMain is added later for DLL builds only.
list(REMOVE_ITEM CSOURCES "dllmain.c")
list(APPEND HHEADERS "${CMAKE_CURRENT_BINARY_DIR}/curl_config.h")
# The rest of the build
include_directories(
"${PROJECT_BINARY_DIR}/lib" # for "curl_config.h"
"${PROJECT_SOURCE_DIR}/lib" # for "curl_setup.h"
)
if(USE_ARES)
include_directories(SYSTEM ${CARES_INCLUDE_DIRS})
endif()
if(CURL_BUILD_TESTING)
add_library(
curlu # special libcurlu library just for unittests
STATIC
EXCLUDE_FROM_ALL
${HHEADERS} ${CSOURCES}
)
target_compile_definitions(curlu PUBLIC "UNITTESTS" "CURL_STATICLIB")
target_link_libraries(curlu PRIVATE ${CURL_LIBS})
endif()
if(ENABLE_CURLDEBUG)
# We must compile these sources separately to avoid memdebug.h redefinitions
# applying to them.
set_source_files_properties("memdebug.c" "curl_multibyte.c" PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
endif()
## Library definition
# Add "_imp" as a suffix before the extension to avoid conflicting with
# the statically linked "libcurl.lib" (typically with MSVC)
if(WIN32 AND
NOT IMPORT_LIB_SUFFIX AND
CMAKE_STATIC_LIBRARY_SUFFIX STREQUAL CMAKE_IMPORT_LIBRARY_SUFFIX)
set(IMPORT_LIB_SUFFIX "_imp")
endif()
# Whether to do a single compilation pass for libcurl sources and reuse these
# objects to generate both static and shared target.
if(NOT DEFINED SHARE_LIB_OBJECT)
# Enable it by default on platforms where PIC is the default for both shared
# and static and there is a way to tell the linker which libcurl symbols it
# should export (vs. marking these symbols exportable at compile-time).
if(WIN32)
set(SHARE_LIB_OBJECT ON)
else()
# On other platforms, make it an option disabled by default
set(SHARE_LIB_OBJECT OFF)
endif()
endif()
if(SHARE_LIB_OBJECT)
set(LIB_OBJECT "libcurl_object")
add_library(${LIB_OBJECT} OBJECT ${HHEADERS} ${CSOURCES})
if(WIN32)
# Define CURL_STATICLIB always, to disable __declspec(dllexport) for
# exported libcurl symbols. We handle exports via libcurl.def instead.
# Except with symbol hiding disabled or debug mode enabled, when we export
# _all_ symbols from libcurl DLL, without using libcurl.def.
set_property(TARGET ${LIB_OBJECT} APPEND PROPERTY COMPILE_DEFINITIONS "CURL_STATICLIB")
endif()
target_link_libraries(${LIB_OBJECT} PRIVATE ${CURL_LIBS})
set_target_properties(${LIB_OBJECT} PROPERTIES
POSITION_INDEPENDENT_CODE ON)
if(CURL_HIDES_PRIVATE_SYMBOLS)
set_property(TARGET ${LIB_OBJECT} APPEND PROPERTY COMPILE_FLAGS "${CURL_CFLAG_SYMBOLS_HIDE}")
set_property(TARGET ${LIB_OBJECT} APPEND PROPERTY COMPILE_DEFINITIONS "CURL_HIDDEN_SYMBOLS")
endif()
if(CURL_HAS_LTO)
set_target_properties(${LIB_OBJECT} PROPERTIES
INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE
INTERPROCEDURAL_OPTIMIZATION_RELWITHDEBINFO TRUE)
endif()
target_include_directories(${LIB_OBJECT} INTERFACE
"$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
"$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>")
set(LIB_SOURCE $<TARGET_OBJECTS:${LIB_OBJECT}>)
else()
set(LIB_SOURCE ${HHEADERS} ${CSOURCES})
endif()
# We want it to be called libcurl on all platforms
if(BUILD_STATIC_LIBS)
list(APPEND libcurl_export ${LIB_STATIC})
add_library(${LIB_STATIC} STATIC ${LIB_SOURCE})
add_library(${PROJECT_NAME}::${LIB_STATIC} ALIAS ${LIB_STATIC})
if(WIN32)
set_property(TARGET ${LIB_OBJECT} APPEND PROPERTY COMPILE_DEFINITIONS "CURL_STATICLIB")
endif()
target_link_libraries(${LIB_STATIC} PRIVATE ${CURL_LIBS})
# Remove the "lib" prefix since the library is already named "libcurl".
set_target_properties(${LIB_STATIC} PROPERTIES
PREFIX "" OUTPUT_NAME "${LIBCURL_OUTPUT_NAME}"
SUFFIX "${STATIC_LIB_SUFFIX}${CMAKE_STATIC_LIBRARY_SUFFIX}"
INTERFACE_COMPILE_DEFINITIONS "CURL_STATICLIB")
if(CURL_HIDES_PRIVATE_SYMBOLS)
set_property(TARGET ${LIB_STATIC} APPEND PROPERTY COMPILE_FLAGS "${CURL_CFLAG_SYMBOLS_HIDE}")
set_property(TARGET ${LIB_STATIC} APPEND PROPERTY COMPILE_DEFINITIONS "CURL_HIDDEN_SYMBOLS")
endif()
if(CURL_HAS_LTO)
set_target_properties(${LIB_STATIC} PROPERTIES
INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE
INTERPROCEDURAL_OPTIMIZATION_RELWITHDEBINFO TRUE)
endif()
target_include_directories(${LIB_STATIC} INTERFACE
"$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
"$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>")
endif()
if(BUILD_SHARED_LIBS)
list(APPEND libcurl_export ${LIB_SHARED})
add_library(${LIB_SHARED} SHARED ${LIB_SOURCE})
add_library(${PROJECT_NAME}::${LIB_SHARED} ALIAS ${LIB_SHARED})
if(WIN32 OR CYGWIN)
if(CYGWIN)
# For Cygwin always compile dllmain.c as a separate unit since it
# includes windows.h, which should not be included in other units.
set_source_files_properties("dllmain.c" PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
endif()
set_property(TARGET ${LIB_SHARED} APPEND PROPERTY SOURCES "dllmain.c")
endif()
if(WIN32)
set_property(TARGET ${LIB_SHARED} APPEND PROPERTY SOURCES "libcurl.rc")
if(CURL_HIDES_PRIVATE_SYMBOLS)
set_property(TARGET ${LIB_SHARED} APPEND PROPERTY SOURCES "${PROJECT_SOURCE_DIR}/lib/libcurl.def")
endif()
endif()
target_link_libraries(${LIB_SHARED} PRIVATE ${CURL_LIBS})
# Remove the "lib" prefix since the library is already named "libcurl".
set_target_properties(${LIB_SHARED} PROPERTIES
PREFIX "" OUTPUT_NAME "${LIBCURL_OUTPUT_NAME}"
IMPORT_PREFIX "" IMPORT_SUFFIX "${IMPORT_LIB_SUFFIX}${CMAKE_IMPORT_LIBRARY_SUFFIX}"
POSITION_INDEPENDENT_CODE ON)
if(CURL_HIDES_PRIVATE_SYMBOLS)
set_property(TARGET ${LIB_SHARED} APPEND PROPERTY COMPILE_FLAGS "${CURL_CFLAG_SYMBOLS_HIDE}")
set_property(TARGET ${LIB_SHARED} APPEND PROPERTY COMPILE_DEFINITIONS "CURL_HIDDEN_SYMBOLS")
endif()
if(CURL_HAS_LTO)
set_target_properties(${LIB_SHARED} PROPERTIES
INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE
INTERPROCEDURAL_OPTIMIZATION_RELWITHDEBINFO TRUE)
endif()
target_include_directories(${LIB_SHARED} INTERFACE
"$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
"$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>")
if(CMAKE_DLL_NAME_WITH_SOVERSION OR
CYGWIN OR
APPLE OR
CMAKE_SYSTEM_NAME STREQUAL "AIX" OR
CMAKE_SYSTEM_NAME STREQUAL "Linux" OR
CMAKE_SYSTEM_NAME STREQUAL "SunOS" OR
CMAKE_SYSTEM_NAME STREQUAL "Haiku" OR
CMAKE_SYSTEM_NAME STREQUAL "GNU/kFreeBSD" OR
# FreeBSD comes with the a.out and ELF flavours but a.out was supported
# up to v3.x and ELF from v3.x. I cannot imagine someone running CMake
# on those ancient systems.
CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
set(_soversion_default TRUE)
else()
set(_soversion_default FALSE)
endif()
option(CURL_LIBCURL_SOVERSION "Enable libcurl SOVERSION" ${_soversion_default})
option(CURL_LIBCURL_VERSIONED_SYMBOLS "Enable libcurl versioned symbols" OFF)
if(CURL_LIBCURL_SOVERSION OR CURL_LIBCURL_VERSIONED_SYMBOLS)
# Get 'VERSIONCHANGE', 'VERSIONADD', 'VERSIONDEL', 'VERSIONINFO' variables
transform_makefile_inc("Makefile.soname" "${CMAKE_CURRENT_BINARY_DIR}/Makefile.soname.cmake")
include("${CMAKE_CURRENT_BINARY_DIR}/Makefile.soname.cmake")
math(EXPR _cmakesoname "${VERSIONCHANGE} - ${VERSIONDEL}")
set(_cmakeversion "${_cmakesoname}.${VERSIONDEL}.${VERSIONADD}")
endif()
if(CURL_LIBCURL_SOVERSION)
set_target_properties(${LIB_SHARED} PROPERTIES
VERSION "${_cmakeversion}" SOVERSION "${_cmakesoname}")
endif()
## Versioned symbols
if(CURL_LIBCURL_VERSIONED_SYMBOLS)
if(NOT DEFINED CURL_LIBCURL_VERSIONED_SYMBOLS_PREFIX)
# Default to prefixes used by autotools
if(CURL_WITH_MULTI_SSL)
set(CURL_LIBCURL_VERSIONED_SYMBOLS_PREFIX "MULTISSL_")
elseif(CURL_USE_OPENSSL)
set(CURL_LIBCURL_VERSIONED_SYMBOLS_PREFIX "OPENSSL_")
elseif(CURL_USE_MBEDTLS)
set(CURL_LIBCURL_VERSIONED_SYMBOLS_PREFIX "MBEDTLS_")
elseif(CURL_USE_BEARSSL)
set(CURL_LIBCURL_VERSIONED_SYMBOLS_PREFIX "BEARSSL_")
elseif(CURL_USE_WOLFSSL)
set(CURL_LIBCURL_VERSIONED_SYMBOLS_PREFIX "WOLFSSL_")
elseif(CURL_USE_GNUTLS)
set(CURL_LIBCURL_VERSIONED_SYMBOLS_PREFIX "GNUTLS_")
elseif(CURL_USE_RUSTLS)
set(CURL_LIBCURL_VERSIONED_SYMBOLS_PREFIX "RUSTLS_")
endif()
endif()
# Generate version script for the linker, for versioned symbols.
# Consumed variables:
# CURL_LIBCURL_VERSIONED_SYMBOLS_PREFIX
# CURL_LIBCURL_VERSIONED_SYMBOLS_SONAME
set(CURL_LIBCURL_VERSIONED_SYMBOLS_SONAME ${_cmakesoname})
configure_file(
"${CMAKE_CURRENT_SOURCE_DIR}/libcurl.vers.in"
"${CMAKE_CURRENT_BINARY_DIR}/libcurl.vers" @ONLY)
include(CMakePushCheckState)
include(CheckCSourceCompiles)
cmake_push_check_state()
set(CMAKE_REQUIRED_LINK_OPTIONS "-Wl,--version-script=${CMAKE_CURRENT_BINARY_DIR}/libcurl.vers")
check_c_source_compiles("int main(void) { return 0; }" HAVE_VERSIONED_SYMBOLS)
if(HAVE_VERSIONED_SYMBOLS)
# Superseded by LINK_OPTIONS in CMake 3.13 and later.
set_target_properties(${LIB_SHARED} PROPERTIES LINK_FLAGS "${CMAKE_REQUIRED_LINK_OPTIONS}")
else()
message(WARNING "Versioned symbols requested, but not supported by the toolchain.")
endif()
cmake_pop_check_state()
endif()
endif()
add_library(${LIB_NAME} ALIAS ${LIB_SELECTED})
add_library(${PROJECT_NAME}::${LIB_NAME} ALIAS ${LIB_SELECTED})
if(CURL_ENABLE_EXPORT_TARGET)
if(BUILD_STATIC_LIBS)
install(TARGETS ${LIB_STATIC}
EXPORT ${TARGETS_EXPORT_NAME}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
)
endif()
if(BUILD_SHARED_LIBS)
install(TARGETS ${LIB_SHARED}
EXPORT ${TARGETS_EXPORT_NAME}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
)
endif()
export(TARGETS ${libcurl_export}
FILE "${PROJECT_BINARY_DIR}/libcurl-target.cmake"
NAMESPACE ${PROJECT_NAME}::
)
endif()
|
