mirror of
https://github.com/libevent/libevent.git
synced 2025-01-20 05:02:55 +08:00
41d1d75a84
Checking functions with `CheckFunctionExists` may get wrong results, we should replace it with `CheckSymbolExists`, which is recommended by the cmake official documentation. Before using `CheckSymbolExists`, we use `CheckIncludeFiles` to check header files and save the available header files in a variable that guarantees `CheckSymbolExists` and `CheckTypeSize` to work correctly. This approach is modeled after the cmake scripts of `curl`. The following functions or files were not found before modification, they can now be found: - msys2 + mingw-8.1.0 on Windows10 or mingw-7.3.0 on Ubuntu-18.04 timerclear timercmp timerisset - windows10 getaddrinfo getnameinfo getprotobynumber getservbyname putenv strtoll timerclear timercmp timerisset - ubuntu-18.04 sys/sysctl.h timeradd timerclear timercmp timerisset - MacOS 10.13 sys/random.h timeradd timerclear timercmp timerisset
37 lines
1.2 KiB
CMake
37 lines
1.2 KiB
CMake
include(CheckSymbolExists)
|
|
include(CheckIncludeFiles)
|
|
|
|
# Check if each symbol in the symbol list exists,
|
|
# and define PREFIX__HAVE_SYMNAME to 1 if yes.
|
|
#
|
|
# SYMLIST: list of symbols to check
|
|
# HEADERS: header files to be included in check code
|
|
# PREFIX: the prefix of definition
|
|
macro(CHECK_SYMBOLS_EXIST SYMLIST HEADERS PREFIX)
|
|
foreach(SYMNAME ${SYMLIST})
|
|
string(TOUPPER "${SYMNAME}" SYMNAME_UPPER)
|
|
if ("${PREFIX}" STREQUAL "")
|
|
set(HAVE_SYM_DEF "HAVE_${SYMNAME_UPPER}")
|
|
else()
|
|
set(HAVE_SYM_DEF "${PREFIX}__HAVE_${SYMNAME_UPPER}")
|
|
endif()
|
|
CHECK_SYMBOL_EXISTS(${SYMNAME} "${HEADERS}" ${HAVE_SYM_DEF})
|
|
endforeach()
|
|
endmacro()
|
|
|
|
# Check if file exists, define PREFIX__HAVE_FILE to 1 if yes,
|
|
# and collect file to EVENT_INCLUDES
|
|
macro(CHECK_INCLUDE_FILE_CONCAT FILE PREFIX)
|
|
string(REGEX REPLACE "[./]" "_" FILE_UL ${FILE})
|
|
string(TOUPPER "${FILE_UL}" FILE_UL_UPPER)
|
|
if ("${PREFIX}" STREQUAL "")
|
|
set(HAVE_FILE_DEF "HAVE_${FILE_UL_UPPER}")
|
|
else()
|
|
set(HAVE_FILE_DEF "${PREFIX}__HAVE_${FILE_UL_UPPER}")
|
|
endif()
|
|
CHECK_INCLUDE_FILES("${EVENT_INCLUDES};${FILE}" ${HAVE_FILE_DEF})
|
|
if(${HAVE_FILE_DEF})
|
|
set(EVENT_INCLUDES ${EVENT_INCLUDES} ${FILE})
|
|
endif()
|
|
endmacro()
|