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curl/lib/CMakeLists.txt
Daniel Stenberg 255aac56f9
curlx: move into to curlx/ 
Move curlx_ functions into its own subdir.

The idea is to use the curlx_ prefix proper on these functions, and use
these same function names both in tool, lib and test suite source code.
Stop the previous special #define setup for curlx_ names.

The printf defines are now done for the library alone. Tests no longer
use the printf defines. The tool code sets its own defines. The printf
functions are not curlx, they are publicly available.

The strcase defines are not curlx_ functions and should not be used by
tool or server code.

dynbuf, warnless, base64, strparse, timeval, timediff are now proper
curlx functions.

When libcurl is built statically, the functions from the library can be
used as-is. The key is then that the functions must work as-is, without
having to be recompiled for use in tool/tests. This avoids symbol
collisions - when libcurl is built statically, we use those functions
directly when building the tool/tests. When libcurl is shared, we
build/link them separately for the tool/tests.

Assisted-by: Jay Satiro

Closes #17253
2025-05-07 11:01:15 +02:00

326 lines
13 KiB
CMake
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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(LIBCURL_OUTPUT_NAME "${LIB_NAME}" CACHE STRING "Basename of the curl library")
set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS "BUILDING_LIBCURL")
set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS "${CURL_DEBUG_MACROS}")
configure_file("curl_config.h.cmake" "${CMAKE_CURRENT_BINARY_DIR}/curl_config.h")
# Get 'CSOURCES', 'HHEADERS' variables
curl_transform_makefile_inc("Makefile.inc" "${CMAKE_CURRENT_BINARY_DIR}/Makefile.inc.cmake")
include("${CMAKE_CURRENT_BINARY_DIR}/Makefile.inc.cmake")
list(APPEND HHEADERS "${CMAKE_CURRENT_BINARY_DIR}/curl_config.h")
# The rest of the build
set_property(DIRECTORY APPEND PROPERTY INCLUDE_DIRECTORIES
"${PROJECT_BINARY_DIR}/lib" # for "curl_config.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 "CURL_STATICLIB" "UNITTESTS")
target_link_libraries(curlu PRIVATE ${CURL_LIBS})
# There is plenty of parallelism when building the testdeps target.
# Override the curlu batch size with the maximum to optimize performance.
set_target_properties(curlu PROPERTIES UNITY_BUILD_BATCH_SIZE 0)
endif()
if(ENABLE_CURLDEBUG)
# We must compile this source separately to avoid memdebug.h redefinitions
# applying to it.
set_source_files_properties("memdebug.c" PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
endif()
## Library definition
if(NOT DEFINED IMPORT_LIB_SUFFIX)
# Suffix implib name with "_imp" by default, to avoid conflicting with
# the generated static "libcurl.lib" (typically with MSVC).
if(WIN32 AND BUILD_SHARED_LIBS AND
CMAKE_IMPORT_LIBRARY_SUFFIX STREQUAL CMAKE_STATIC_LIBRARY_SUFFIX)
set(IMPORT_LIB_SUFFIX "_imp")
else()
set(IMPORT_LIB_SUFFIX "")
endif()
endif()
if(NOT DEFINED STATIC_LIB_SUFFIX)
set(STATIC_LIB_SUFFIX "")
endif()
# Detect implib static lib filename collision
if(WIN32 AND BUILD_STATIC_LIBS AND BUILD_SHARED_LIBS AND
"${IMPORT_LIB_SUFFIX}${CMAKE_IMPORT_LIBRARY_SUFFIX}" STREQUAL
"${STATIC_LIB_SUFFIX}${CMAKE_STATIC_LIBRARY_SUFFIX}")
message(FATAL_ERROR "Library suffix is the same ('${STATIC_LIB_SUFFIX}${CMAKE_STATIC_LIBRARY_SUFFIX}') "
"for the import and static '${LIBCURL_OUTPUT_NAME}' library. "
"Set IMPORT_LIB_SUFFIX and/or STATIC_LIB_SUFFIX to different values, "
"or disable building either the shared or static library to avoid the filename collision.")
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 AND CMAKE_VERSION VERSION_GREATER_EQUAL 3.12)
set(LIB_OBJECT "libcurl_object")
add_library(${LIB_OBJECT} OBJECT ${HHEADERS} ${CSOURCES}) # Requires CMake 3.12
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 ${LIB_OBJECT} APPEND PROPERTY COMPILE_DEFINITIONS "CURL_HIDDEN_SYMBOLS")
endif()
if(CURL_HAS_LTO)
if(CMAKE_CONFIGURATION_TYPES)
set_target_properties(${LIB_OBJECT} PROPERTIES
INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE
INTERPROCEDURAL_OPTIMIZATION_RELWITHDEBINFO TRUE)
else()
set_target_properties(${LIB_OBJECT} PROPERTIES INTERPROCEDURAL_OPTIMIZATION TRUE)
endif()
endif()
target_include_directories(${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 ${LIB_STATIC} APPEND PROPERTY COMPILE_DEFINITIONS "CURL_STATICLIB")
endif()
target_link_libraries(${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}${CMAKE_STATIC_LIBRARY_SUFFIX}"
INTERFACE_COMPILE_DEFINITIONS "CURL_STATICLIB"
INTERFACE_LINK_DIRECTORIES "${CURL_LIBDIRS}")
if(CURL_HIDES_PRIVATE_SYMBOLS)
set_property(TARGET ${LIB_STATIC} APPEND PROPERTY COMPILE_FLAGS "${CURL_CFLAG_SYMBOLS_HIDE}")
set_property(TARGET ${LIB_STATIC} APPEND PROPERTY COMPILE_DEFINITIONS "CURL_HIDDEN_SYMBOLS")
endif()
if(CURL_HAS_LTO)
if(CMAKE_CONFIGURATION_TYPES)
set_target_properties(${LIB_OBJECT} PROPERTIES
INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE
INTERPROCEDURAL_OPTIMIZATION_RELWITHDEBINFO TRUE)
else()
set_target_properties(${LIB_OBJECT} PROPERTIES INTERPROCEDURAL_OPTIMIZATION TRUE)
endif()
endif()
target_include_directories(${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 ${LIB_SHARED} APPEND PROPERTY COMPILE_DEFINITIONS "CURL_HIDDEN_SYMBOLS")
endif()
if(CURL_HAS_LTO)
if(CMAKE_CONFIGURATION_TYPES)
set_target_properties(${LIB_OBJECT} PROPERTIES
INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE
INTERPROCEDURAL_OPTIMIZATION_RELWITHDEBINFO TRUE)
else()
set_target_properties(${LIB_OBJECT} PROPERTIES INTERPROCEDURAL_OPTIMIZATION TRUE)
endif()
endif()
target_include_directories(${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" ${_soversion_default})
option(CURL_LIBCURL_VERSIONED_SYMBOLS "Enable libcurl versioned symbols" OFF)
if(CURL_LIBCURL_SOVERSION OR CURL_LIBCURL_VERSIONED_SYMBOLS)
# Get 'VERSIONCHANGE', 'VERSIONADD', 'VERSIONDEL', 'VERSIONINFO' variables
curl_transform_makefile_inc("Makefile.soname" "${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)
if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.13)
set_target_properties(${LIB_SHARED} PROPERTIES LINK_OPTIONS "${CMAKE_REQUIRED_LINK_OPTIONS}")
else()
set_target_properties(${LIB_SHARED} PROPERTIES LINK_FLAGS "${CMAKE_REQUIRED_LINK_OPTIONS}")
endif()
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()
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