system/heirloom-pax: Update for Modern C

Enums do not work like they did in the mid 1980s.  This allows the build
to work on GCC 13.  I have tested basic usage of cpio and pax tools.

2 files changed, 77 insertions, 3 deletions

diff --git a/system/heirloom-pax/APKBUILD b/system/heirloom-pax/APKBUILD
index 303af5ebb..ec9e444d4 100644
--- a/system/heirloom-pax/APKBUILD
+++ b/system/heirloom-pax/APKBUILD
@@ -2,7 +2,7 @@
 # Maintainer: A. Wilcox <awilfox@adelielinux.org>
 pkgname=heirloom-pax
 pkgver=1.0
-pkgrel=1
+pkgrel=2
 pkgdesc="Portable Archive eXchange, the POSIX archival tool"
 url="http://heirloom.sourceforge.net/"
 arch="all"
@@ -13,7 +13,9 @@ makedepends="bsd-compat-headers bzip2-dev zlib-dev"
 replaces="pax"
 subpackages="$pkgname-doc"
 source="https://distfiles.adelielinux.org/source/${pkgname}-$pkgver.tar.xz
-	sysmacros.patch"
+	sysmacros.patch
+	modern-c.patch
+	"
 
 build() {
 	make LD="gcc"
@@ -30,4 +32,5 @@ package() {
 }
 
 sha512sums="7b0ad20cc51b5bcec9c07e84c603e4891f636944f6f6bd13d3decb0e9d6b23d6164b663468ee2293b37721aae20334774f4e56fd8541ffceee934050e819b642  heirloom-pax-1.0.tar.xz
-bcc12138ebed707e165a1ac5dac815acd85770974e19f62610e0fe32a96879fb1173fc4e7beafde12b7bc1ed03f2751b2839eeb3ccacbe209d8cbcfe0307eac3  sysmacros.patch"
+bcc12138ebed707e165a1ac5dac815acd85770974e19f62610e0fe32a96879fb1173fc4e7beafde12b7bc1ed03f2751b2839eeb3ccacbe209d8cbcfe0307eac3  sysmacros.patch
+e0e2756bf3f55862880eadf6c5852e1c2dc6cdc4a75451a4d917685ef3c7f955f23229eef1c778be32bc27a1253ceaf820225d3ea794cfc88fe702adccaf9ef7  modern-c.patch"
diff --git a/system/heirloom-pax/modern-c.patch b/system/heirloom-pax/modern-c.patch
new file mode 100644
index 000000000..8574d71dc
--- /dev/null
+++ b/system/heirloom-pax/modern-c.patch
@@ -0,0 +1,71 @@
+GCC 10 and higher treat enums differently and the way that cpio(1)/pax(1) use
+them is no longer supported.  This is similar, but not identical, to the patch
+used by Gentoo for sys-apps/heirloom-tools.
+
+This should be upstreamable, but sadly, there is no upstream any more.
+--- heirloom-pax-1.0/cpio/cpio.c.old	2024-05-25 11:20:07.088299291 -0500
++++ heirloom-pax-1.0/cpio/cpio.c	2024-05-25 11:25:21.674430528 -0500
+@@ -824,6 +824,9 @@
+ static int		compressed_bar;	/* this is a compressed bar archive */
+ static int		formatforced;	/* -k -i -Hfmt forces a format */
+ static long long	lineno;		/* input line number */
++enum fmttype		fmttype;	/* type of archive format */
++enum pax		pax;		/* type of pax command this is */
++enum pax_preserve	pax_preserve;	/* attributes to preserve */
+ 
+ int			pax_dflag;	/* directory matches only itself */
+ int			pax_kflag;	/* do not overwrite files */
+--- heirloom-pax-1.0/cpio/cpio.h.old	2007-03-26 13:14:57.000000000 -0500
++++ heirloom-pax-1.0/cpio/cpio.h	2024-05-25 11:23:54.143854185 -0500
+@@ -31,7 +31,7 @@
+ #include <sys/stat.h>
+ #include <inttypes.h>
+ 
+-enum	{
++enum fmttype	{
+ 	FMT_NONE	= 00000000,	/* no format chosen yet */
+ 
+ 	TYP_PAX		= 00000010,	/* uses pax-like extended headers */
+@@ -70,7 +70,8 @@
+ 	FMT_BAR		= 00400001,	/* bar format type */
+ 
+ 	FMT_ZIP		= 01000000	/* zip format */
+-} fmttype;
++};
++extern enum fmttype	fmttype;
+ 
+ /*
+  * Zip compression method.
+@@ -173,11 +174,12 @@
+ extern char		*progname;
+ extern struct glist	*patterns;
+ 
+-enum {			/* type of pax command this is */
++enum pax {			/* type of pax command this is */
+ 	PAX_TYPE_CPIO		= 0,	/* not a pax command */
+ 	PAX_TYPE_PAX1992	= 1,	/* POSIX.2 pax command */
+ 	PAX_TYPE_PAX2001	= 2	/* POSIX.1-2001 pax command */
+-} pax;
++};
++extern enum pax		pax;
+ extern int		pax_dflag;
+ extern int		pax_kflag;
+ extern int		pax_nflag;
+@@ -185,14 +187,15 @@
+ extern int		pax_uflag;
+ extern int		pax_Xflag;
+ 
+-enum {
++enum pax_preserve {
+ 	PAX_P_NONE	= 0000,
+ 	PAX_P_ATIME	= 0001,
+ 	PAX_P_MTIME	= 0004,
+ 	PAX_P_OWNER	= 0010,
+ 	PAX_P_MODE	= 0020,
+ 	PAX_P_EVERY	= 0400
+-} pax_preserve;
++};
++extern enum pax_preserve	pax_preserve;
+ 
+ extern size_t		(*ofiles)(char **, size_t *);
+ extern void		(*prtime)(time_t);