linux-kernel - [PATCH] parisc: fix building with gcc-15

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Message-Id: <20250520090051.4058923-1-arnd@kernel.org>
Date: Tue, 20 May 2025 11:00:46 +0200
From: Arnd Bergmann <arnd@...nel.org>
To: "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
	Helge Deller <deller@....de>
Cc: Arnd Bergmann <arnd@...db.de>,
	stable@...r.kernel.org,
	linux-parisc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] parisc: fix building with gcc-15

From: Arnd Bergmann <arnd@...db.de>

The decompressor is built with the default C dialect, which is now gnu23
on gcc-15, and this clashes with the kernel's bool type definition:

In file included from include/uapi/linux/posix_types.h:5,
                 from arch/parisc/boot/compressed/misc.c:7:
include/linux/stddef.h:11:9: error: cannot use keyword 'false' as enumeration constant
   11 |         false   = 0,

Add the -std=gnu11 argument here, as we do for all other architectures.

Cc: stable@...r.kernel.org
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/parisc/boot/compressed/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/parisc/boot/compressed/Makefile b/arch/parisc/boot/compressed/Makefile
index 92227fa813dc..17c42d718eb3 100644
--- a/arch/parisc/boot/compressed/Makefile
+++ b/arch/parisc/boot/compressed/Makefile
@@ -18,6 +18,7 @@ KBUILD_CFLAGS += -fno-PIE -mno-space-regs -mdisable-fpregs -Os
 ifndef CONFIG_64BIT
 KBUILD_CFLAGS += -mfast-indirect-calls
 endif
+KBUILD_CFLAGS += -std=gnu11
 
 LDFLAGS_vmlinux := -X -e startup --as-needed -T
 $(obj)/vmlinux: $(obj)/vmlinux.lds $(addprefix $(obj)/, $(OBJECTS)) $(LIBGCC) FORCE
-- 
2.39.5