From: Robert Marko <robimarko@gmail.com>
Date: Thu, 24 Apr 2025 10:31:30 +0000 (+0200)
Subject: toolchain: gdb: set -std=gnu17
X-Git-Tag: v24.10.2~114
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=refs%2Fpull%2F18581%2Fhead;p=thirdparty%2Fopenwrt.git

toolchain: gdb: set -std=gnu17

Fedora 42 updated to GCC15 which now defaults to GNU23 as the default
instead of GNU17[1], and this breaks gdb compilation.

This looks like a readline issue, that was fixed in GDB 16.2 but to
not update toolchain components we can simply set the C standard back
to GNU17.

[1] https://gcc.gnu.org/gcc-15/porting_to.html#c23

Link: https://github.com/openwrt/openwrt/pull/18581
Signed-off-by: Robert Marko <robimarko@gmail.com>
---

diff --git a/toolchain/gdb/Makefile b/toolchain/gdb/Makefile
index 9b9ee5a9d8d..ad0c843f75d 100644
--- a/toolchain/gdb/Makefile
+++ b/toolchain/gdb/Makefile
@@ -56,6 +56,8 @@ else
   HOST_CONFIGURE_ARGS+= --without-python
 endif
 
+HOST_CFLAGS += -std=gnu17
+
 define Host/Install
 	mkdir -p $(TOOLCHAIN_DIR)/bin
 	$(INSTALL_BIN) $(HOST_BUILD_DIR)/gdb/gdb $(TOOLCHAIN_DIR)/bin/$(TARGET_CROSS)gdb