[debug] Don't define g_debuglevel in the kernel

We only use this constant when `DEBUGLEVEL>=2`, but we get -Werror=pedantic errors for empty translation units, so still define it except in kernel environments. Backport from the kernel: https://lore.kernel.org/lkml/[email protected]/
facebook · Nov 17, 2023 · 4b243e6 · 4b243e6
1 parent d8ae0a6
commit 4b243e6
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/lib/common/debug.c b/lib/common/debug.c
@@ -21,4 +21,10 @@
 
 #include "debug.h"
 
+#if !defined(ZSTD_LINUX_KERNEL) || (DEBUGLEVEL>=2)
+/* We only use this when DEBUGLEVEL>=2, but we get -Werror=pedantic errors if a
+ * translation unit is empty. So remove this from Linux kernel builds, but
+ * otherwise just leave it in.
+ */
 int g_debuglevel = DEBUGLEVEL;
+#endif