[bazel] Port e175ecf

Author: d0k

utils/bazel/llvm-project-overlay/llvm/config.bzl

@@ -32,6 +32,7 @@ posix_defines = [
     "BACKTRACE_HEADER=<execinfo.h>",
     r'LTDL_SHLIB_EXT=\".so\"',
     r'LLVM_PLUGIN_EXT=\".so\"',
+    "LLVM_ENABLE_LLVM_EXPORT_ANNOTATIONS=1",
     "LLVM_ENABLE_PLUGINS=1",
     "LLVM_ENABLE_THREADS=1",
     "HAVE_DEREGISTER_FRAME=1",

utils/bazel/llvm-project-overlay/llvm/include/llvm/Config/llvm-config.h

@@ -114,6 +114,9 @@
 /* Define if building LLVM with BUILD_SHARED_LIBS */
 /* #undef LLVM_BUILD_SHARED_LIBS */
 
+/* Define if exporting LLVM public interface for shared library */
+/* LLVM_ENABLE_LLVM_EXPORT_ANNOTATIONS defined in Bazel */
+
 /* Define if building LLVM with LLVM_FORCE_USE_OLD_TOOLCHAIN_LIBS */
 /* #undef LLVM_FORCE_USE_OLD_TOOLCHAIN ${LLVM_FORCE_USE_OLD_TOOLCHAIN} */
 

utils/bazel/llvm_configs/llvm-config.h.cmake

@@ -110,6 +110,9 @@
 /* Define if building LLVM with BUILD_SHARED_LIBS */
 #cmakedefine LLVM_BUILD_SHARED_LIBS
 
+/* Define if exporting LLVM public interface for shared library */
+#cmakedefine LLVM_ENABLE_LLVM_EXPORT_ANNOTATIONS
+
 /* Define if building LLVM with LLVM_FORCE_USE_OLD_TOOLCHAIN_LIBS */
 #cmakedefine LLVM_FORCE_USE_OLD_TOOLCHAIN ${LLVM_FORCE_USE_OLD_TOOLCHAIN}