From cd9ce377f886ddfb81efc7d81f2ad3b7930ad045 Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Sat, 16 Nov 2024 05:51:58 +0800
Subject: [PATCH] fixes #24434; C gen issue using nim-lang/opengl (#24435)

fixes #24434

In https://github.com/nim-lang/Nim/pull/24432

```nim
let ex = "NIM_EXTERNC N_NIMCALL(void, nimLoadProcs$1)(void) {$2}$N$N" %
        [(i.ord - '0'.ord).rope, extract(el)]
```

```nim
procs.addDeclWithVisibility(ExternC):
   procs.addProcHeader(ccNimCall, "nimLoadProcs" & $(i.ord - '0'.ord), "void", cProcParams())
```

extern "C" makes a function-name in C++ have C linkage; it should be
effaced with C compiler
---
 compiler/cbuilderdecls.nim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/cbuilderdecls.nim b/compiler/cbuilderdecls.nim
index 0a605f31e4..f458c160c0 100644
--- a/compiler/cbuilderdecls.nim
+++ b/compiler/cbuilderdecls.nim
@@ -404,7 +404,7 @@ proc addVisibilityPrefix(builder: var Builder, visibility: DeclVisibility) =
   of Extern:
     builder.add("extern ")
   of ExternC:
-    builder.add("extern \"C\" ")
+    builder.add("NIM_EXTERNC ")
   of ImportLib:
     builder.add("N_LIB_IMPORT ")
   of ExportLib: