From e20afe69bbd267fc5a1401ed3e137dbd3d399dc9 Mon Sep 17 00:00:00 2001
From: vxtls <187420201+vxtls@users.noreply.github.com>
Date: Sun, 1 Mar 2026 19:37:54 -0500
Subject: [PATCH] fix(gawk): patch bundled getopt prototypes to match modern
 libc declarations

---
 .../patches/fix-getopt-prototypes.patch       | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 steps-guix/gawk-4.2.1/patches/fix-getopt-prototypes.patch

diff --git a/steps-guix/gawk-4.2.1/patches/fix-getopt-prototypes.patch b/steps-guix/gawk-4.2.1/patches/fix-getopt-prototypes.patch
new file mode 100644
index 00000000..8666a109
--- /dev/null
+++ b/steps-guix/gawk-4.2.1/patches/fix-getopt-prototypes.patch
@@ -0,0 +1,26 @@
+SPDX-License-Identifier: GPL-3.0-or-later
+
+Fix legacy getopt declarations that conflict with modern libc headers.
+
+--- gawk-4.2.1/support/getopt.c
++++ gawk-4.2.1/support/getopt.c
+@@ -152,7 +152,7 @@
+    whose names are inconsistent.  */
+ 
+ #ifndef getenv
+-extern char *getenv ();
++extern char *getenv (const char *);
+ #endif
+ 
+ #endif /* not __GNU_LIBRARY__ */
+--- gawk-4.2.1/support/getopt.h
++++ gawk-4.2.1/support/getopt.h
+@@ -181,7 +181,7 @@
+ #  endif
+ # endif
+ #else /* not __GNU_LIBRARY__ */
+-extern int getopt ();
++extern int getopt (int, char *const *, const char *);
+ #endif /* __GNU_LIBRARY__ */
+ 
+ #ifndef __need_getopt