Glog: fixed OpenBSD support

- Usage of syscall() is not allowed
- Use getthrid() to retreive the thread ID

Pull Request: https://projects.blender.org/blender/blender/pulls/107818

extern/glog/README.blender

@@ -8,3 +8,5 @@ Local modifications:
 * Added special definitions of HAVE_SNPRINTF and HAVE_LIB_GFLAGS
   in Windows' specific config.h.
 * Silenced syscall deprecation warnings on macOS >= 10.12.
+* Usage of syscall() is not allowed and use getthrid() to
+  retreive the thread ID on OpenBSD

extern/glog/src/config.h

@@ -2,6 +2,8 @@
  #include "config_mac.h"
 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
  #include "config_freebsd.h"
+#elif defined(__OpenBSD__)
+ #include "config_openbsd.h"
 #elif defined(__MINGW32__)
  #include "windows/config.h"
 #elif defined(__linux__)

extern/glog/src/config_openbsd.h

@@ -0,0 +1,192 @@
+/* define if glog doesn't use RTTI */
+/* #undef DISABLE_RTTI */
+
+/* Namespace for Google classes */
+#define GOOGLE_NAMESPACE google
+
+/* Define if you have the `dladdr' function */
+/* #undef HAVE_DLADDR */
+
+/* Define if you have the `snprintf' function */
+#define HAVE_SNPRINTF
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H
+
+/* Define to 1 if you have the <execinfo.h> header file. */
+/* #undef HAVE_EXECINFO_H */
+
+/* Define if you have the `fcntl' function */
+#define HAVE_FCNTL
+
+/* Define to 1 if you have the <glob.h> header file. */
+#define HAVE_GLOB_H
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `pthread' library (-lpthread). */
+#define HAVE_LIBPTHREAD
+
+/* Define to 1 if you have the <libunwind.h> header file. */
+/* #undef HAVE_LIBUNWIND_H */
+
+/* define if you have google gflags library */
+#define HAVE_LIB_GFLAGS
+
+/* define if you have google gmock library */
+/* #undef HAVE_LIB_GMOCK */
+
+/* define if you have google gtest library */
+/* #undef HAVE_LIB_GTEST */
+
+/* define if you have libunwind */
+/* #undef HAVE_LIB_UNWIND */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H
+
+/* define to disable multithreading support. */
+/* #undef NO_THREADS */
+
+/* define if the compiler implements namespaces */
+#define HAVE_NAMESPACES
+
+/* Define if you have the 'pread' function */
+#define HAVE_PREAD
+
+/* Define if you have POSIX threads libraries and header files. */
+#define HAVE_PTHREAD
+
+/* Define to 1 if you have the <pwd.h> header file. */
+#define HAVE_PWD_H
+
+/* Define if you have the 'pwrite' function */
+#define HAVE_PWRITE
+
+/* define if the compiler implements pthread_rwlock_* */
+#define HAVE_RWLOCK 1
+
+/* Define if you have the 'sigaction' function */
+#define HAVE_SIGACTION
+
+/* Define if you have the `sigaltstack' function */
+#define HAVE_SIGALTSTACK 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H
+
+/* Define to 1 if you have the <syscall.h> header file. */
+/* #undef HAVE_SYSCALL_H */
+
+/* Define to 1 if you have the <syslog.h> header file. */
+#define HAVE_SYSLOG_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/syscall.h> header file. */
+#define HAVE_SYS_SYSCALL_H
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/ucontext.h> header file. */
+/* #undef HAVE_SYS_UCONTEXT_H */
+
+/* Define to 1 if you have the <sys/utsname.h> header file. */
+#define HAVE_SYS_UTSNAME_H
+
+/* Define to 1 if you have the <ucontext.h> header file. */
+/* #undef HAVE_UCONTEXT_H */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the <unwind.h> header file. */
+#define HAVE_UNWIND_H 1
+
+/* define if the compiler supports using expression for operator */
+#define HAVE_USING_OPERATOR
+
+/* define if your compiler has __attribute__ */
+#define HAVE___ATTRIBUTE__
+
+/* define if your compiler has __builtin_expect */
+#define HAVE___BUILTIN_EXPECT 1
+
+/* define if your compiler has __sync_val_compare_and_swap */
+#define HAVE___SYNC_VAL_COMPARE_AND_SWAP
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+   */
+/* #undef LT_OBJDIR */
+
+/* Name of package */
+/* #undef PACKAGE */
+
+/* Define to the address where bug reports for this package should be sent. */
+/* #undef PACKAGE_BUGREPORT */
+
+/* Define to the full name of this package. */
+/* #undef PACKAGE_NAME */
+
+/* Define to the full name and version of this package. */
+/* #undef PACKAGE_STRING */
+
+/* Define to the one symbol short name of this package. */
+/* #undef PACKAGE_TARNAME */
+
+/* Define to the home page for this package. */
+/* #undef PACKAGE_URL */
+
+/* Define to the version of this package. */
+/* #undef PACKAGE_VERSION */
+
+/* How to access the PC from a struct ucontext */
+/* #undef PC_FROM_UCONTEXT */
+
+/* Define to necessary symbol if this constant uses a non-standard name on
+   your system. */
+/* #undef PTHREAD_CREATE_JOINABLE */
+
+/* The size of `void *', as computed by sizeof. */
+#define SIZEOF_VOID_P 8
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* the namespace where STL code like vector<> is defined */
+#define STL_NAMESPACE std
+
+/* location of source code */
+#define TEST_SRC_DIR "."
+
+/* Version number of package */
+/* #undef VERSION */
+
+/* Stops putting the code inside the Google namespace */
+#define _END_GOOGLE_NAMESPACE_ }
+
+/* Puts following code inside the Google namespace */
+#define _START_GOOGLE_NAMESPACE_ namespace google {
+
+#define GOOGLE_GLOG_DLL_DECL
+
+/* isn't getting defined by configure script when clang compilers are used
+   and cuases compilation errors in stactrace/unwind modules */
+#ifdef __clang__
+#  define NO_FRAME_POINTER
+#endif

extern/glog/src/raw_logging.cc

@@ -59,7 +59,8 @@
 # include <unistd.h>
 #endif
 
-#if (defined(HAVE_SYSCALL_H) || defined(HAVE_SYS_SYSCALL_H)) && (!(defined OS_MACOSX))
+#if (defined(HAVE_SYSCALL_H) || defined(HAVE_SYS_SYSCALL_H)) && \
+    (!(defined OS_MACOSX) && !(defined OS_OPENBSD))
 # define safe_write(fd, s, len)  syscall(SYS_write, fd, s, len)
 #else
   // Not so safe, but what can you do?

extern/glog/src/utilities.cc

@@ -282,6 +282,8 @@ pid_t GetTID() {
   return getpid();  // Linux:  getpid returns thread ID when gettid is absent
 #elif defined OS_WINDOWS && !defined OS_CYGWIN
   return GetCurrentThreadId();
+#elif defined OS_OPENBSD
+  return getthrid();
 #else
   // If none of the techniques above worked, we use pthread_self().
   return (pid_t)(uintptr_t)pthread_self();