Add yexport export generators

1 files changed, 25 insertions, 0 deletions

diff --git a/build/export_generators/hardcoded-cmake/cmake/global_flags.linker.gnu.cmake b/build/export_generators/hardcoded-cmake/cmake/global_flags.linker.gnu.cmake
new file mode 100644
index 0000000000..5b32a8868f
--- /dev/null
+++ b/build/export_generators/hardcoded-cmake/cmake/global_flags.linker.gnu.cmake
@@ -0,0 +1,25 @@
+if (ANDROID)
+  # NDK r23 onwards has stopped using libgcc:
+  # - https://github.com/android/ndk/wiki/Changelog-r23#changes
+  # - https://github.com/android/ndk/issues/1230
+  #   LLVM's libunwind is now used instead of libgcc for all architectures rather than just 32-bit Arm.
+  # - https://github.com/android/ndk/issues/1231
+  #   LLVM's libclang_rt.builtins is now used instead of libgcc.
+  if (CMAKE_ANDROID_NDK_VERSION GREATER_EQUAL 23)
+    # Use toolchain defaults to link with libunwind/clang_rt.builtins
+    add_link_options("-nostdlib++")
+  else ()
+    # Preserve old behaviour: specify runtime libs manually
+    add_link_options(-nodefaultlibs)
+    link_libraries(gcc)
+    if (CMAKE_ANDROID_ARCH_ABI STREQUAL "armeabi-v7a")
+      link_libraries(unwind)
+    endif()
+  endif()
+elseif (CMAKE_SYSTEM_NAME MATCHES "^(Darwin|Linux)$")
+  add_link_options("-nodefaultlibs")
+endif()
+
+if (APPLE)
+  set(CMAKE_SHARED_LINKER_FLAGS "-undefined dynamic_lookup")
+endif()