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1#File defines convenience macros for available feature testing
2
3# This macro checks if the symbol exists in the library and if it
4# does, it prepends library to the list.  It is intended to be called
5# multiple times with a sequence of possibly dependent libraries in
6# order of least-to-most-dependent.  Some libraries depend on others
7# to link correctly.
8macro(check_library_exists_concat LIBRARY SYMBOL VARIABLE)
9  check_library_exists("${LIBRARY};${CURL_LIBS}" ${SYMBOL} "${CMAKE_LIBRARY_PATH}"
10    ${VARIABLE})
11  if(${VARIABLE})
12    set(CURL_LIBS ${LIBRARY} ${CURL_LIBS})
13  endif()
14endmacro()
15
16# Check if header file exists and add it to the list.
17# This macro is intended to be called multiple times with a sequence of
18# possibly dependent header files.  Some headers depend on others to be
19# compiled correctly.
20macro(check_include_file_concat FILE VARIABLE)
21  check_include_files("${CURL_INCLUDES};${FILE}" ${VARIABLE})
22  if(${VARIABLE})
23    set(CURL_INCLUDES ${CURL_INCLUDES} ${FILE})
24    set(CURL_TEST_DEFINES "${CURL_TEST_DEFINES} -D${VARIABLE}")
25  endif()
26endmacro()
27
28# For other curl specific tests, use this macro.
29macro(curl_internal_test CURL_TEST)
30  if(NOT DEFINED "${CURL_TEST}")
31    set(MACRO_CHECK_FUNCTION_DEFINITIONS
32      "-D${CURL_TEST} ${CURL_TEST_DEFINES} ${CMAKE_REQUIRED_FLAGS}")
33    if(CMAKE_REQUIRED_LIBRARIES)
34      set(CURL_TEST_ADD_LIBRARIES
35        "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
36    endif()
37
38    message(STATUS "Performing Curl Test ${CURL_TEST}")
39    try_compile(${CURL_TEST}
40      ${CMAKE_BINARY_DIR}
41      ${CMAKE_CURRENT_SOURCE_DIR}/CMake/CurlTests.c
42      CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
43      "${CURL_TEST_ADD_LIBRARIES}"
44      OUTPUT_VARIABLE OUTPUT)
45    if(${CURL_TEST})
46      set(${CURL_TEST} 1 CACHE INTERNAL "Curl test ${FUNCTION}")
47      message(STATUS "Performing Curl Test ${CURL_TEST} - Success")
48      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
49        "Performing Curl Test ${CURL_TEST} passed with the following output:\n"
50        "${OUTPUT}\n")
51    else()
52      message(STATUS "Performing Curl Test ${CURL_TEST} - Failed")
53      set(${CURL_TEST} "" CACHE INTERNAL "Curl test ${FUNCTION}")
54      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
55        "Performing Curl Test ${CURL_TEST} failed with the following output:\n"
56        "${OUTPUT}\n")
57    endif()
58  endif()
59endmacro()
60
61macro(curl_nroff_check)
62  find_program(NROFF NAMES gnroff nroff)
63  if(NROFF)
64    # Need a way to write to stdin, this will do
65    file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt" "test")
66    # Tests for a valid nroff option to generate a manpage
67    foreach(_MANOPT "-man" "-mandoc")
68      execute_process(COMMAND "${NROFF}" ${_MANOPT}
69        OUTPUT_VARIABLE NROFF_MANOPT_OUTPUT
70        INPUT_FILE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt"
71        ERROR_QUIET)
72      # Save the option if it was valid
73      if(NROFF_MANOPT_OUTPUT)
74        message("Found *nroff option: -- ${_MANOPT}")
75        set(NROFF_MANOPT ${_MANOPT})
76        set(NROFF_USEFUL ON)
77        break()
78      endif()
79    endforeach()
80    # No need for the temporary file
81    file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt")
82    if(NOT NROFF_USEFUL)
83      message(WARNING "Found no *nroff option to get plaintext from man pages")
84    endif()
85  else()
86    message(WARNING "Found no *nroff program")
87  endif()
88endmacro()
89