new package: dgsh

packages/dgsh/build.sh

@@ -0,0 +1,22 @@
+TERMUX_PKG_HOMEPAGE=https://www.spinellis.gr/sw/dgsh/
+TERMUX_PKG_DESCRIPTION="The directed graph shell"
+TERMUX_PKG_LICENSE="Apache-2.0"
+TERMUX_PKG_MAINTAINER="@termux"
+TERMUX_PKG_VERSION=1.0.0
+TERMUX_PKG_SRCURL=https://github.com/dspinellis/dgsh/archive/refs/tags/v${TERMUX_PKG_VERSION}.tar.gz
+TERMUX_PKG_SHA256=22a7f2794e1287a46b03ce38c27a1d9349d1c66535c30e065c8783626555c76c
+TERMUX_PKG_BUILD_DEPENDS="check"
+TERMUX_PKG_BUILD_IN_SRC=true
+
+termux_step_pre_configure() {
+	TERMUX_PKG_SRCDIR=$TERMUX_PKG_SRCDIR/core-tools
+	TERMUX_PKG_BUILDDIR=$TERMUX_PKG_SRCDIR
+	cd $TERMUX_PKG_BUILDDIR
+
+	sed -i -e 's/#.*$//g' src/dgsh-elf.s
+	cp $TERMUX_PKG_BUILDER_DIR/s_cpow.c src/
+
+	touch ../.config
+	mkdir -p m4
+	autoreconf -fi
+}

packages/dgsh/core-tools-src-dgsh-tee.c.patch

@@ -0,0 +1,11 @@
+--- a/core-tools/src/dgsh-tee.c
++++ b/core-tools/src/dgsh-tee.c
+@@ -439,7 +439,7 @@
+ #ifdef FALLOC_FL_PUNCH_HOLE
+ 	static bool warned = false;
+
+-	if (fallocate(tmp_fd, FALLOC_FL_PUNCH_HOLE, pool * buffer_size, buffer_size) < 0 &&
++	if (fallocate(bp->page_file_fd, FALLOC_FL_PUNCH_HOLE, pool * buffer_size, buffer_size) < 0 &&
+ 	    !warned) {
+ 		warn("Failed to free temporary buffer space");
+ 		warned = true;

packages/dgsh/core-tools-src-dgsh-w.c.patch

@@ -0,0 +1,11 @@
+--- a/core-tools/src/dgsh-w.c
++++ b/core-tools/src/dgsh-w.c
+@@ -10,6 +10,8 @@
+ #include "dgsh.h"
+ #include "dgsh-debug.h"
+
++#include "s_cpow.c"
++
+ void
+ read_number(int fd, long double *x, long double complex *xc)
+ {

packages/dgsh/s_cpow.c

@@ -0,0 +1,82 @@
+/*-
+ * Copyright (c) 2008 Stephen L. Moshier <steve@moshier.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*							cpow
+ *
+ *	Complex power function
+ *
+ *
+ *
+ * SYNOPSIS:
+ *
+ * double complex cpow();
+ * double complex a, z, w;
+ *
+ * w = cpow (a, z);
+ *
+ *
+ *
+ * DESCRIPTION:
+ *
+ * Raises complex A to the complex Zth power.
+ * Definition is per AMS55 # 4.2.8,
+ * analytically equivalent to cpow(a,z) = cexp(z clog(a)).
+ *
+ * ACCURACY:
+ *
+ *                      Relative error:
+ * arithmetic   domain     # trials      peak         rms
+ *    IEEE      -10,+10     30000       9.4e-15     1.5e-15
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <complex.h>
+#include <float.h>
+#include <math.h>
+
+#if defined __ANDROID__ && __ANDROID_API__ < 26
+
+#pragma GCC visibility push(hidden)
+
+double complex
+cpow(double complex a, double complex z)
+{
+	double complex w;
+	double x, y, r, theta, absa, arga;
+
+	x = creal (z);
+	y = cimag (z);
+	absa = cabs (a);
+	if (absa == 0.0) {
+		return (CMPLX(0.0, 0.0));
+	}
+	arga = carg (a);
+	r = pow (absa, x);
+	theta = x * arga;
+	if (y != 0.0) {
+		r = r * exp (-y * arga);
+		theta = theta + y * log (absa);
+	}
+	w = CMPLX(r * cos (theta),  r * sin (theta));
+	return (w);
+}
+
+#pragma GCC visibility pop
+
+#endif