[compiler-rt] d0761d5 - [compiler-rt] Allow to build on CYGWIN (#66348)

[via llvm-commits]

Author: Carlo Bramini
Date: 2023-09-15T11:13:51+03:00
New Revision: d0761d560a24b1b2b21f2cea67d19f3c244555ae

URL: https://github.com/llvm/llvm-project/commit/d0761d560a24b1b2b21f2cea67d19f3c244555ae
DIFF: https://github.com/llvm/llvm-project/commit/d0761d560a24b1b2b21f2cea67d19f3c244555ae.diff

LOG: [compiler-rt] Allow to build on CYGWIN (#66348)

If you try to build `compiler-rt` on CYGWIN, you will get message:
```
error: Unsupported target
```
Adding support for this platform. just needs to add testing if
`__CYGWIN__` is defined into `lib\builtins\int_lib.h`.

Added: 
    

Modified: 
    compiler-rt/lib/builtins/int_lib.h

Removed: 
    


################################################################################
diff  --git a/compiler-rt/lib/builtins/int_lib.h b/compiler-rt/lib/builtins/int_lib.h
index fb791ebc42eb16d..04ea2d910574bcf 100644
--- a/compiler-rt/lib/builtins/int_lib.h
+++ b/compiler-rt/lib/builtins/int_lib.h
@@ -49,7 +49,7 @@
 #define SYMBOL_NAME(name) XSTR(__USER_LABEL_PREFIX__) #name
 
 #if defined(__ELF__) || defined(__MINGW32__) || defined(__wasm__) ||           \
-    defined(_AIX)
+    defined(_AIX)    || defined(__CYGWIN__)
 #define COMPILER_RT_ALIAS(name, aliasname) \
   COMPILER_RT_ABI __typeof(name) aliasname __attribute__((__alias__(#name)));
 #elif defined(__APPLE__)