From 33419c8dd1fa73c132b3fb87537bcb994c61cda8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Attila=20Ol=C3=A1h?= <atl@google.com>
Date: Sat, 12 Jun 2021 12:56:51 +0200
Subject: [PATCH] Fix compilation with -Wunused-variable

When compiling with -Wunused-variable, `EXT_STRERROR_R_CHAR_P` gets undefined because of a failing compilation check.

An alternative would be to mark `c` as `__attribute__((undefined))`, but MSVC doesn't have `__attribute__((undefined))`.
---
 cmake/generateConfigFile.cmake | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cmake/generateConfigFile.cmake b/cmake/generateConfigFile.cmake
index 9fc4e001..adb58d5e 100644
--- a/cmake/generateConfigFile.cmake
+++ b/cmake/generateConfigFile.cmake
@@ -32,6 +32,7 @@ check_cxx_source_compiles( "
 int main() {
     char buff[100];
     const char* c = strerror_r(0,buff,100);
+    (void)c;  // ignore unuse-variable
     return 0;
 }" EXV_STRERROR_R_CHAR_P )