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80 lines
3.1 KiB
CMake
80 lines
3.1 KiB
CMake
# The following defines affect the environment configuration tests are run in:
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# CMAKE_REQUIRED_DEFINITIONS, CMAKE_REQUIRED_FLAGS, CMAKE_REQUIRED_LIBRARIES,
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# and CMAKE_REQUIRED_INCLUDES
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list(APPEND CMAKE_REQUIRED_DEFINITIONS -D_GNU_SOURCE=1)
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include(CMakePushCheckState)
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# An unrecognized flag is usually a warning and not an error, which CMake apparently does
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# not pick up on. Combine it with -Werror to determine if it's actually supported.
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# This is not bulletproof; old versions of GCC only emit a warning about unrecognized warning
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# options when there are other warnings to emit :rolleyes:
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# See https://github.com/fish-shell/fish-shell/commit/fe2da0a9#commitcomment-47431659
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# Try using CMake's own logic to locate curses/ncurses
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find_package(Curses)
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if(NOT ${CURSES_FOUND})
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# CMake has trouble finding platform-specific system libraries
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# installed to multiarch paths (e.g. /usr/lib/x86_64-linux-gnu)
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# if not symlinked or passed in as a manual define.
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message("Falling back to pkg-config for (n)curses detection")
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include(FindPkgConfig)
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pkg_search_module(CURSES REQUIRED ncurses curses)
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set(CURSES_CURSES_LIBRARY ${CURSES_LIBRARIES})
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set(CURSES_LIBRARY ${CURSES_LIBRARIES})
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endif()
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# Set up extra include directories for CheckIncludeFile
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list(APPEND CMAKE_REQUIRED_INCLUDES ${CURSES_INCLUDE_DIRS})
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# Fix undefined reference to tparm on RHEL 6 and potentially others
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# If curses is found via CMake, it also links against tinfo if it exists. But if we use our
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# fallback pkg-config logic above, we need to do this manually.
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find_library(CURSES_TINFO tinfo)
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if (CURSES_TINFO)
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set(CURSES_LIBRARY ${CURSES_LIBRARY} ${CURSES_TINFO})
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else()
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# on NetBSD, libtinfo has a longer name (libterminfo)
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find_library(CURSES_TINFO terminfo)
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if (CURSES_TINFO)
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set(CURSES_LIBRARY ${CURSES_LIBRARY} ${CURSES_TINFO})
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endif()
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endif()
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# Set up the config.h file.
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set(PACKAGE_NAME "fish")
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set(PACKAGE_TARNAME "fish")
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include(CheckCXXSymbolExists)
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include(CheckCXXSourceCompiles)
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include(CheckTypeSize)
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# workaround for lousy mtime precision on a Linux kernel
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if (CMAKE_SYSTEM_NAME MATCHES "Linux|Android")
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check_cxx_symbol_exists(clock_gettime time.h HAVE_CLOCK_GETTIME)
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check_cxx_symbol_exists(futimens sys/stat.h HAVE_FUTIMENS)
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if ((HAVE_CLOCK_GETTIME) AND (HAVE_FUTIMENS))
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set(UVAR_FILE_SET_MTIME_HACK 1)
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endif()
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endif()
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check_cxx_symbol_exists(gettext libintl.h HAVE_GETTEXT)
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check_type_size("wchar_t[8]" WCHAR_T_BITS LANGUAGE CXX)
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# Work around the fact that cmake does not propagate the language standard flag into
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# the CHECK_CXX_SOURCE_COMPILES function. See CMake issue #16456.
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# Ensure we do this after the FIND_PACKAGE calls which use C, and will error on a C++
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# standards flag.
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# Also see https://github.com/fish-shell/fish-shell/issues/5865
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if(NOT POLICY CMP0067)
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list(APPEND CMAKE_REQUIRED_FLAGS "${CMAKE_CXX${CMAKE_CXX_STANDARD}_EXTENSION_COMPILE_OPTION}")
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endif()
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check_cxx_source_compiles("
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#include <sys/wait.h>
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int main() {
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static_assert(WEXITSTATUS(0x007f) == 0x7f, \"This is our message we need to add because C++ is terrible\");
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return 0;
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}
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"
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HAVE_WAITSTATUS_SIGNAL_RET)
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