1#*************************************************************************** 2# _ _ ____ _ 3# Project ___| | | | _ \| | 4# / __| | | | |_) | | 5# | (__| |_| | _ <| |___ 6# \___|\___/|_| \_\_____| 7# 8# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 9# 10# This software is licensed as described in the file COPYING, which 11# you should have received as part of this distribution. The terms 12# are also available at https://curl.se/docs/copyright.html. 13# 14# You may opt to use, copy, modify, merge, publish, distribute and/or sell 15# copies of the Software, and permit persons to whom the Software is 16# furnished to do so, under the terms of the COPYING file. 17# 18# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19# KIND, either express or implied. 20# 21# SPDX-License-Identifier: curl 22# 23########################################################################### 24#File defines convenience macros for available feature testing 25 26# This macro checks if the symbol exists in the library and if it 27# does, it prepends library to the list. It is intended to be called 28# multiple times with a sequence of possibly dependent libraries in 29# order of least-to-most-dependent. Some libraries depend on others 30# to link correctly. 31macro(check_library_exists_concat LIBRARY SYMBOL VARIABLE) 32 check_library_exists("${LIBRARY};${CURL_LIBS}" ${SYMBOL} "${CMAKE_LIBRARY_PATH}" 33 ${VARIABLE}) 34 if(${VARIABLE}) 35 set(CURL_LIBS ${LIBRARY} ${CURL_LIBS}) 36 endif() 37endmacro() 38 39# Check if header file exists and add it to the list. 40# This macro is intended to be called multiple times with a sequence of 41# possibly dependent header files. Some headers depend on others to be 42# compiled correctly. 43macro(check_include_file_concat FILE VARIABLE) 44 check_include_files("${CURL_INCLUDES};${FILE}" ${VARIABLE}) 45 if(${VARIABLE}) 46 set(CURL_INCLUDES ${CURL_INCLUDES} ${FILE}) 47 set(CURL_TEST_DEFINES "${CURL_TEST_DEFINES} -D${VARIABLE}") 48 endif() 49endmacro() 50 51# For other curl specific tests, use this macro. 52macro(curl_internal_test CURL_TEST) 53 if(NOT DEFINED "${CURL_TEST}") 54 set(MACRO_CHECK_FUNCTION_DEFINITIONS 55 "-D${CURL_TEST} ${CURL_TEST_DEFINES} ${CMAKE_REQUIRED_FLAGS}") 56 if(CMAKE_REQUIRED_LIBRARIES) 57 set(CURL_TEST_ADD_LIBRARIES 58 "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}") 59 endif() 60 61 message(STATUS "Performing Curl Test ${CURL_TEST}") 62 try_compile(${CURL_TEST} 63 ${CMAKE_BINARY_DIR} 64 ${CMAKE_CURRENT_SOURCE_DIR}/CMake/CurlTests.c 65 CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS} 66 "${CURL_TEST_ADD_LIBRARIES}" 67 OUTPUT_VARIABLE OUTPUT) 68 if(${CURL_TEST}) 69 set(${CURL_TEST} 1 CACHE INTERNAL "Curl test ${FUNCTION}") 70 message(STATUS "Performing Curl Test ${CURL_TEST} - Success") 71 file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log 72 "Performing Curl Test ${CURL_TEST} passed with the following output:\n" 73 "${OUTPUT}\n") 74 else() 75 message(STATUS "Performing Curl Test ${CURL_TEST} - Failed") 76 set(${CURL_TEST} "" CACHE INTERNAL "Curl test ${FUNCTION}") 77 file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log 78 "Performing Curl Test ${CURL_TEST} failed with the following output:\n" 79 "${OUTPUT}\n") 80 endif() 81 endif() 82endmacro() 83 84macro(curl_nroff_check) 85 find_program(NROFF NAMES gnroff nroff) 86 if(NROFF) 87 # Need a way to write to stdin, this will do 88 file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt" "test") 89 # Tests for a valid nroff option to generate a manpage 90 foreach(_MANOPT "-man" "-mandoc") 91 execute_process(COMMAND "${NROFF}" ${_MANOPT} 92 OUTPUT_VARIABLE NROFF_MANOPT_OUTPUT 93 INPUT_FILE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt" 94 ERROR_QUIET) 95 # Save the option if it was valid 96 if(NROFF_MANOPT_OUTPUT) 97 message("Found *nroff option: -- ${_MANOPT}") 98 set(NROFF_MANOPT ${_MANOPT}) 99 set(NROFF_USEFUL ON) 100 break() 101 endif() 102 endforeach() 103 # No need for the temporary file 104 file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt") 105 if(NOT NROFF_USEFUL) 106 message(WARNING "Found no *nroff option to get plaintext from man pages") 107 endif() 108 else() 109 message(WARNING "Found no *nroff program") 110 endif() 111endmacro() 112 113macro(optional_dependency DEPENDENCY) 114 set(CURL_${DEPENDENCY} AUTO CACHE STRING "Build curl with ${DEPENDENCY} support (AUTO, ON or OFF)") 115 set_property(CACHE CURL_${DEPENDENCY} PROPERTY STRINGS AUTO ON OFF) 116 117 if(CURL_${DEPENDENCY} STREQUAL AUTO) 118 find_package(${DEPENDENCY}) 119 elseif(CURL_${DEPENDENCY}) 120 find_package(${DEPENDENCY} REQUIRED) 121 endif() 122endmacro() 123