{"id":2224600,"url":"http://patchwork.ozlabs.org/api/patches/2224600/?format=json","web_url":"http://patchwork.ozlabs.org/project/buildroot/patch/20260417171046.12548-1-chakrabortyshubham66@gmail.com/","project":{"id":27,"url":"http://patchwork.ozlabs.org/api/projects/27/?format=json","name":"Buildroot development","link_name":"buildroot","list_id":"buildroot.buildroot.org","list_email":"buildroot@buildroot.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260417171046.12548-1-chakrabortyshubham66@gmail.com>","list_archive_url":null,"date":"2026-04-17T17:10:45","name":"[v2] package/make: fix conflicting prototypes for getenv and getopt","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"a0f0529ea3bad63b2c6761aa16e8dec7bf2668db","submitter":{"id":92564,"url":"http://patchwork.ozlabs.org/api/people/92564/?format=json","name":"Shubham Chakraborty","email":"chakrabortyshubham66@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/buildroot/patch/20260417171046.12548-1-chakrabortyshubham66@gmail.com/mbox/","series":[{"id":500376,"url":"http://patchwork.ozlabs.org/api/series/500376/?format=json","web_url":"http://patchwork.ozlabs.org/project/buildroot/list/?series=500376","date":"2026-04-17T17:10:45","name":"[v2] package/make: fix conflicting prototypes for getenv and getopt","version":2,"mbox":"http://patchwork.ozlabs.org/series/500376/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2224600/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2224600/checks/","tags":{},"related":[],"headers":{"Return-Path":"","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=Tc/eo6no;\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\" "},"content":"GCC 15 defaults to C23, which rejects old-style K&R empty parameter\nlist declarations that conflict with typed prototypes in system headers.\nThis is particularly visible when using non-glibc C libraries (e.g. musl).\n\nFixes:\nlib/fnmatch.c:124:14: error: conflicting types for 'getenv'; have 'char *(void)'\n| 124 | extern char *getenv ();\n| | ^~~~~~\n\nFix getenv() declarations in lib/fnmatch.c and src/getopt.c, and\nfix getopt() declarations in src/getopt.h to match the prototypes\nin and .\n\nUpstream: https://lists.gnu.org/archive/html/bug-make/2025-03/msg00032.html\n\nSigned-off-by: Shubham Chakraborty \n\n---\nv1 -> v2:\n - Add Upstream: tag with link to bug-make mailing list (Marcus)\n - Include specific GCC 15 error log in commit message\n - Improve commit description with more technical context\n - Update patch headers to standard format\n---\n ...ing-prototypes-for-getenv-and-getopt.patch | 70 +++++++++++++++++++\n 1 file changed, 70 insertions(+)\n create mode 100644 package/make/0001-fix-conflicting-prototypes-for-getenv-and-getopt.patch","diff":"diff --git a/package/make/0001-fix-conflicting-prototypes-for-getenv-and-getopt.patch b/package/make/0001-fix-conflicting-prototypes-for-getenv-and-getopt.patch\nnew file mode 100644\nindex 0000000000..70f2dc2886\n--- /dev/null\n+++ b/package/make/0001-fix-conflicting-prototypes-for-getenv-and-getopt.patch\n@@ -0,0 +1,70 @@\n+From b64b62d00cb64b62d00cb64b62d00cb64b62d00c Mon Sep 17 00:00:00:00 2001\n+From: Shubham Chakraborty \n+Date: Sat, 21 Feb 2026 12:00:00 +0000\n+Subject: [PATCH] fix conflicting prototypes for getenv and getopt\n+\n+GCC 15 defaults to C23, which rejects old-style K&R empty parameter\n+list declarations that conflict with typed prototypes in system headers.\n+\n+Fix getenv() declarations in lib/fnmatch.c and src/getopt.c, and\n+fix getopt() declarations in src/getopt.h to match the prototypes\n+in and .\n+\n+This fixes build errors like:\n+error: conflicting types for 'getenv'; have 'char *(void)'\n+\n+Upstream: https://lists.gnu.org/archive/html/bug-make/2025-03/msg00032.html\n+Signed-off-by: Shubham Chakraborty \n+---\n+ lib/fnmatch.c | 2 +-\n+ src/getopt.c | 2 +-\n+ src/getopt.h | 4 ++--\n+ 3 files changed, 4 insertions(+), 4 deletions(-)\n+\n+diff --git a/lib/fnmatch.c b/lib/fnmatch.c\n+--- a/lib/fnmatch.c\n++++ b/lib/fnmatch.c\n+@@ -121,7 +121,7 @@\n+ whose names are inconsistent. */\n+ \n+ # if !defined _LIBC && !defined getenv\n+-extern char *getenv ();\n++extern char *getenv (const char *__name);\n+ # endif\n+ \n+ # ifndef errno\n+diff --git a/src/getopt.c b/src/getopt.c\n+--- a/src/getopt.c\n++++ b/src/getopt.c\n+@@ -202,7 +202,7 @@\n+ whose names are inconsistent. */\n+ \n+ #ifndef getenv\n+-extern char *getenv ();\n++extern char *getenv (const char *__name);\n+ #endif\n+ \n+ static char *\n+diff --git a/src/getopt.h b/src/getopt.h\n+--- a/src/getopt.h\n++++ b/src/getopt.h\n+@@ -102,7 +102,7 @@\n+ errors, only prototype getopt for the GNU C library. */\n+ extern int getopt (int argc, char *const *argv, const char *shortopts);\n+ #else /* not __GNU_LIBRARY__ */\n+-extern int getopt ();\n++extern int getopt (int argc, char *const *argv, const char *shortopts);\n+ #endif /* __GNU_LIBRARY__ */\n+ extern int getopt_long (int argc, char *const *argv, const char *shortopts,\n+ \t\t const struct option *longopts, int *longind);\n+@@ -116,7 +116,7 @@\n+ \t\t const struct option *longopts, int *longind,\n+ \t\t\t int long_only);\n+ #else /* not __STDC__ */\n+-extern int getopt ();\n++extern int getopt (int argc, char *const *argv, const char *shortopts);\n+ extern int getopt_long ();\n+ extern int getopt_long_only ();\n+ \n+-- \n+2.43.0\n","prefixes":["v2"]}