[clang] 122afae - [libclang][Cygwin] Use __declspec(dllexport) for libclang on Cygwin (#147122)

[via cfe-commits]

Author: Tomohiro Kashiwada
Date: 2025-07-07T22:55:53+03:00
New Revision: 122afae10ed28564b64530de571ce8e4ce584b2c

URL: https://github.com/llvm/llvm-project/commit/122afae10ed28564b64530de571ce8e4ce584b2c
DIFF: https://github.com/llvm/llvm-project/commit/122afae10ed28564b64530de571ce8e4ce584b2c.diff

LOG: [libclang][Cygwin] Use __declspec(dllexport) for libclang on Cygwin (#147122)

This is needed for Cygwin build without `-DLLVM_LINK_LLVM_DYLIB=ON`,
otherwise causes a linker error 'export ordinal too large'.

Added: 
    

Modified: 
    clang/include/clang-c/Platform.h

Removed: 
    


################################################################################
diff  --git a/clang/include/clang-c/Platform.h b/clang/include/clang-c/Platform.h
index 67c1fff8ff783..8d341ddd6f8eb 100644
--- a/clang/include/clang-c/Platform.h
+++ b/clang/include/clang-c/Platform.h
@@ -22,7 +22,7 @@ LLVM_CLANG_C_EXTERN_C_BEGIN
 #ifndef CINDEX_NO_EXPORTS
   #define CINDEX_EXPORTS
 #endif
-#ifdef _WIN32
+#if defined(_WIN32) || defined(__CYGWIN__)
   #ifdef CINDEX_EXPORTS
     #ifdef _CINDEX_LIB_
       #define CINDEX_LINKAGE __declspec(dllexport)