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-rw-r--r--3rdparty/expat/ConfigureChecks.cmake36
1 files changed, 29 insertions, 7 deletions
diff --git a/3rdparty/expat/ConfigureChecks.cmake b/3rdparty/expat/ConfigureChecks.cmake
index f03faa637d0..d85e48c972d 100644
--- a/3rdparty/expat/ConfigureChecks.cmake
+++ b/3rdparty/expat/ConfigureChecks.cmake
@@ -1,6 +1,7 @@
+include(CheckCCompilerFlag)
+include(CheckCSourceCompiles)
include(CheckIncludeFile)
include(CheckIncludeFiles)
-include(CheckFunctionExists)
include(CheckSymbolExists)
include(TestBigEndian)
@@ -16,10 +17,21 @@ check_include_file("sys/stat.h" HAVE_SYS_STAT_H)
check_include_file("sys/types.h" HAVE_SYS_TYPES_H)
check_include_file("unistd.h" HAVE_UNISTD_H)
-check_function_exists("getpagesize" HAVE_GETPAGESIZE)
-check_function_exists("bcopy" HAVE_BCOPY)
-check_symbol_exists("memmove" "string.h" HAVE_MEMMOVE)
-check_function_exists("mmap" HAVE_MMAP)
+check_symbol_exists("getpagesize" "unistd.h" HAVE_GETPAGESIZE)
+check_symbol_exists("mmap" "sys/mman.h" HAVE_MMAP)
+check_symbol_exists("getrandom" "sys/random.h" HAVE_GETRANDOM)
+
+if(EXPAT_WITH_LIBBSD)
+ set(CMAKE_REQUIRED_LIBRARIES "${LIB_BSD}")
+ set(_bsd "bsd/")
+else()
+ set(_bsd "")
+endif()
+check_symbol_exists("arc4random_buf" "${_bsd}stdlib.h" HAVE_ARC4RANDOM_BUF)
+if(NOT HAVE_ARC4RANDOM_BUF)
+ check_symbol_exists("arc4random" "${_bsd}stdlib.h" HAVE_ARC4RANDOM)
+endif()
+set(CMAKE_REQUIRED_LIBRARIES)
#/* Define to 1 if you have the ANSI C header files. */
check_include_files("stdlib.h;stdarg.h;string.h;float.h" STDC_HEADERS)
@@ -40,5 +52,15 @@ else(HAVE_SYS_TYPES_H)
set(SIZE_T "unsigned")
endif(HAVE_SYS_TYPES_H)
-configure_file(expat_config.h.cmake expat_config.h)
-add_definitions(-DHAVE_EXPAT_CONFIG_H)
+check_c_source_compiles("
+ #include <stdlib.h> /* for NULL */
+ #include <unistd.h> /* for syscall */
+ #include <sys/syscall.h> /* for SYS_getrandom */
+ int main() {
+ syscall(SYS_getrandom, NULL, 0, 0);
+ return 0;
+ }"
+ HAVE_SYSCALL_GETRANDOM)
+
+check_c_compiler_flag("-fno-strict-aliasing" FLAG_NO_STRICT_ALIASING)
+check_c_compiler_flag("-fvisibility=hidden" FLAG_VISIBILITY)