Static build fixes for locale and threading

Author: daleroberts

dynadjust/cmake/StaticBuildOptimizations.cmake

@@ -6,13 +6,26 @@ function(optimize_static_target TARGET_NAME)
     if(CMAKE_BUILD_TYPE STREQUAL "Release" OR CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo")
         set_property(TARGET ${TARGET_NAME} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
     endif()
-    
+
     # Platform-specific optimizations
     if(UNIX AND NOT APPLE)
         # Linux-specific optimizations
         target_link_options(${TARGET_NAME} PRIVATE
             -static
-            -Wl,--gc-sections      # Remove unused sections
+            -pthread
+            # Clang + static glibc: libstdc++'s gthr-posix.h uses __weakref__ aliases
+            # for pthread functions. GCC resolves these at link time, but Clang leaves
+            # them as null, causing segfaults when std::thread calls through them.
+            # Force the linker to pull in the real symbols from libc.a.
+            -Wl,-u,pthread_create
+            -Wl,-u,pthread_join
+            -Wl,-u,pthread_cancel
+            -Wl,-u,pthread_detach
+            -Wl,-u,pthread_mutex_lock
+            -Wl,-u,pthread_mutex_unlock
+            -Wl,-u,pthread_once
+            -Wl,-u,pthread_key_create
+            -Wl,--gc-sections       # Remove unused sections
             -Wl,--as-needed         # Only link libraries that are actually used
             -Wl,-O2                 # Optimize at link time
             -Wl,--strip-all         # Strip all symbols

dynadjust/include/config/dnaversion.hpp

@@ -310,7 +310,7 @@ const char* const __plot_dll_name__ = "libdnaplot.so";
 
 #if defined(__clang__)                                   // Clang compiler
   #define __COMPILER__ "Clang"
-  #define __COMPILER_VERSION__ __VERSION__
+  #define __COMPILER_VERSION__ __clang_version__
 #elif defined(__GNUC__) || defined(__GNUG__)				// GNU GCC
   #define __COMPILER__ "GNU GCC"
   #define __COMPILER_VERSION__ __VERSION__