addpkg(root/libgpiod): add v2.2

libgpiod allows for checking and setting different GPIO pins in the
device, if kernel is new enough (>= v4.6).

root-packages/libgpiod/build.sh

@@ -0,0 +1,15 @@
+TERMUX_PKG_HOMEPAGE=https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git
+TERMUX_PKG_DESCRIPTION="C library and tools for interacting with the GPIO character device. Requires kernel v4.6 or higher"
+TERMUX_PKG_LICENSE="LGPL-2.1"
+TERMUX_PKG_MAINTAINER="@termux"
+TERMUX_PKG_VERSION=2.2
+TERMUX_PKG_SRCURL="https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/snapshot/libgpiod-${TERMUX_PKG_VERSION}.tar.gz"
+TERMUX_PKG_SHA256=ae35329db7027c740e90c883baf27c26311f0614e6a7b115771b28188b992aec
+TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
+--enable-tools=yes
+ac_cv_func_versionsort=yes
+"
+
+termux_step_pre_configure() {
+	autoreconf -vfi
+}

root-packages/libgpiod/gpiod.subpackage.sh

@@ -0,0 +1,4 @@
+TERMUX_SUBPKG_DESCRIPTION="Tools for interacting with Linux GPIO character device"
+TERMUX_SUBPKG_INCLUDE="
+bin/*
+"

root-packages/libgpiod/versionsort.patch

@@ -0,0 +1,45 @@
+--- ./tools/tools-common.c~	2024-10-22 08:57:17.000000000 +0000
++++ ./tools/tools-common.c	2024-12-24 10:09:30.231824790 +0000
+@@ -476,6 +476,42 @@
+ 	return 1;
+ }
+
++int strverscmp(const char *l0, const char *r0)
++{
++	const unsigned char *l = (const void *)l0;
++	const unsigned char *r = (const void *)r0;
++	size_t i, dp, j;
++	int z = 1;
++
++	/* Find maximal matching prefix and track its maximal digit
++	 * suffix and whether those digits are all zeros. */
++	for (dp=i=0; l[i]==r[i]; i++) {
++		int c = l[i];
++		if (!c) return 0;
++		if (!isdigit(c)) dp=i+1, z=1;
++		else if (c!='0') z=0;
++	}
++
++	if (l[dp]!='0' && r[dp]!='0') {
++		/* If we're not looking at a digit sequence that began
++		 * with a zero, longest digit string is greater. */
++		for (j=i; isdigit(l[j]); j++)
++			if (!isdigit(r[j])) return 1;
++		if (isdigit(r[j])) return -1;
++	} else if (z && dp<i && (isdigit(l[i]) || isdigit(r[i]))) {
++		/* Otherwise, if common prefix of digit sequence is
++		 * all zeros, digits order less than non-digits. */
++		return (unsigned char)(l[i]-'0') - (unsigned char)(r[i]-'0');
++	}
++
++	return l[i] - r[i];
++}
++
++static int versionsort(const struct dirent **a, const struct dirent **b)
++{
++	return strverscmp((*a)->d_name, (*b)->d_name);
++}
++
+ int all_chip_paths(char ***paths_ptr)
+ {
+ 	int i, j, num_chips, ret = 0;