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GET /api/1.1/patches/2227914/?format=api
{ "id": 2227914, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2227914/?format=api", "web_url": "http://patchwork.ozlabs.org/project/buildroot/patch/20260424132326.825570-3-jeanmichel.hautbois@yoseli.org/", "project": { "id": 27, "url": "http://patchwork.ozlabs.org/api/1.1/projects/27/?format=api", "name": "Buildroot development", "link_name": "buildroot", "list_id": "buildroot.buildroot.org", "list_email": "buildroot@buildroot.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260424132326.825570-3-jeanmichel.hautbois@yoseli.org>", "date": "2026-04-24T13:23:17", "name": "[02/11] package/gcc: force --with-arch=cf on m68k MCF5441x", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c89ee6a84a30c546fd2f8c6e082129ad0c64c925", "submitter": { "id": 86730, "url": "http://patchwork.ozlabs.org/api/1.1/people/86730/?format=api", "name": "Jean-Michel Hautbois", "email": "jeanmichel.hautbois@yoseli.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/buildroot/patch/20260424132326.825570-3-jeanmichel.hautbois@yoseli.org/mbox/", "series": [ { "id": 501366, "url": "http://patchwork.ozlabs.org/api/1.1/series/501366/?format=api", "web_url": "http://patchwork.ozlabs.org/project/buildroot/list/?series=501366", "date": "2026-04-24T13:23:15", "name": "Add ColdFire MCF5441x (m68k) support", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501366/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2227914/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2227914/checks/", "tags": {}, "headers": { "Return-Path": "<buildroot-bounces@buildroot.org>", "X-Original-To": [ "incoming-buildroot@patchwork.ozlabs.org", "buildroot@buildroot.org" ], "Delivered-To": [ "patchwork-incoming-buildroot@legolas.ozlabs.org", "buildroot@buildroot.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=buildroot.org header.i=@buildroot.org\n header.a=rsa-sha256 header.s=default header.b=ZW4WAi0y;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=buildroot.org\n (client-ip=2605:bc80:3010::137; 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charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "buildroot-bounces@buildroot.org", "Sender": "\"buildroot\" <buildroot-bounces@buildroot.org>" }, "content": "On m68k ColdFire V4e (MCF5441x) with BR2_USE_MMU selected, the\nhost-gcc build fails during the multilib pass because the compiler\ncannot disambiguate between m68k and cf variants. It needs to be\nconfigured explicitly with --with-arch=cf.\n\nThe natural place to wire this would be BR2_GCC_TARGET_ARCH=\"cf\" in\narch/Config.in.m68k (as was attempted in an earlier v1 submission\n[1], see the v1 review at [2]). That mechanism is however also\nconsumed by the external toolchain infrastructure: when\nBR2_GCC_TARGET_ARCH is non-empty,\ntoolchain/toolchain-external/pkg-toolchain-external.mk unconditionally\nadds -march=$(GCC_TARGET_ARCH) to TOOLCHAIN_EXTERNAL_CFLAGS and bakes\nit into the toolchain wrapper as the default BR_ARCH.\n\nThis is fine as long as the value is a valid -march= argument, but\ngcc m68k only accepts 68000/68010/68020/68030/68040/68060/cpu32/isaa\n/isaaplus/isab/isac on the command line; \"cf\" is a valid --with-arch\nvalue for configure, but not a valid -march. The result is that an\nexternal toolchain user selecting BR2_m68k_cf5441x gets the wrapper\ninjecting -march=cf on every compile, which immediately fails with\n\"unrecognized argument in option '-march=cf'\". This was confirmed by\nconsuming a Buildroot-generated cf5441x toolchain as external.\n\nInstead, add the --with-arch=cf configure argument via Buildroot's\ngcc packaging Makefile (package/gcc/gcc.mk), gated on\nBR2_m68k_cf5441x. Only the internal host-gcc configure step picks\nit up; BR2_GCC_TARGET_ARCH remains unset, so the external toolchain\ninfrastructure is untouched and external toolchain users are not\naffected by this patch.\n\n[1] https://lore.kernel.org/buildroot/20230629053130.3976-1-jeanmichel.hautbois@yoseli.org/\n[2] https://lore.kernel.org/buildroot/20230704052449.GM2510@scaer/\n\nSigned-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@yoseli.org>\n---\n package/gcc/gcc.mk | 4 ++++\n 1 file changed, 4 insertions(+)", "diff": "diff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk\nindex ea96286c32..270a0638d9 100644\n--- a/package/gcc/gcc.mk\n+++ b/package/gcc/gcc.mk\n@@ -220,6 +220,10 @@ endif\n ifneq ($(GCC_TARGET_ARCH),)\n HOST_GCC_COMMON_CONF_OPTS += --with-arch=\"$(GCC_TARGET_ARCH)\"\n endif\n+\n+ifeq ($(BR2_m68k_cf5441x),y)\n+HOST_GCC_COMMON_CONF_OPTS += --with-arch=cf\n+endif\n ifneq ($(GCC_TARGET_ABI),)\n HOST_GCC_COMMON_CONF_OPTS += --with-abi=\"$(GCC_TARGET_ABI)\"\n endif\n", "prefixes": [ "02/11" ] }