new package: rdrview (#8313)

packages/rdrview/Makefile.patch

@@ -0,0 +1,28 @@
+--- a/Makefile
++++ b/Makefile
+@@ -1,11 +1,11 @@
+-SYSTEM = $(shell uname)
+-CC = gcc
++SYSTEM = Linux
++CC ?= gcc
+ GIT_COMMIT = $(shell git rev-parse --short HEAD)
+ 
+-CFLAGS = -DNDEBUG -O2 -Wall -Wextra -fno-strict-aliasing
+-override CFLAGS += $(shell curl-config --cflags) $(shell xml2-config --cflags)
++CFLAGS += -DNDEBUG -Wall -Wextra -fno-strict-aliasing
++override CFLAGS += $(shell sh @TERMUX_PREFIX@/bin/curl-config --cflags) $(shell sh @TERMUX_PREFIX@/bin/xml2-config --cflags)
+ 
+-LDLIBS = $(shell curl-config --libs) $(shell xml2-config --libs) -lm
++LDLIBS = $(shell sh @TERMUX_PREFIX@/bin/curl-config --libs) $(shell sh @TERMUX_PREFIX@/bin/xml2-config --libs) -lm
+ ifeq ($(SYSTEM), Linux)
+ 	LDLIBS += -lseccomp
+ else ifeq ($(SYSTEM), FreeBSD)
+@@ -14,7 +14,7 @@
+ 	LDLIBS += -liconv
+ endif
+ 
+-PREFIX = /usr/local
++PREFIX = @TERMUX_PREFIX@
+ BINDIR = $(DESTDIR)$(PREFIX)/bin
+ MANDIR = $(DESTDIR)$(PREFIX)/share/man/man1
+ 

packages/rdrview/build.sh

@@ -0,0 +1,19 @@
+TERMUX_PKG_HOMEPAGE=https://github.com/eafer/rdrview
+TERMUX_PKG_DESCRIPTION="Command line tool to extract the main content from a webpage"
+TERMUX_PKG_LICENSE="Apache-2.0"
+TERMUX_PKG_MAINTAINER="@termux"
+_COMMIT=9bde19f9e53562790b363bb2e3b15707c8c67676
+TERMUX_PKG_VERSION=2021.09.12
+TERMUX_PKG_SRCURL=https://github.com/eafer/rdrview.git
+TERMUX_PKG_GIT_BRANCH=master
+TERMUX_PKG_DEPENDS="libcurl, libiconv, libseccomp, libxml2"
+TERMUX_PKG_BUILD_IN_SRC=true
+
+termux_step_post_get_source() {
+	git fetch --unshallow
+	git checkout $_COMMIT
+}
+
+termux_step_pre_configure() {
+	LDFLAGS+=" -liconv"
+}

packages/rdrview/src-rdrview.c.patch

@@ -0,0 +1,24 @@
+--- a/src/rdrview.c
++++ b/src/rdrview.c
+@@ -143,7 +143,7 @@
+ 	char *envdir = getenv("TMPDIR");
+ 
+ 	if (!tmpdir) {
+-		dir_template = mkstring("%s/XXXXXX", envdir ? envdir : "/tmp");
++		dir_template = mkstring("%s/XXXXXX", envdir ? envdir : "@TERMUX_PREFIX@/tmp");
+ 		tmpdir = mkdtemp(dir_template);
+ 		if (!tmpdir)
+ 			fatal_errno();
+@@ -571,9 +571,9 @@
+ {
+ 	static char *mailcap_paths[] = {
+ 		NULL, /* Placeholder for the user's mailcap */
+-		"/etc/mailcap",
+-		"/usr/share/etc/mailcap",
+-		"/usr/local/etc/mailcap",
++		"@TERMUX_PREFIX@/etc/mailcap",
++		"@TERMUX_PREFIX@/share/etc/mailcap",
++		"@TERMUX_PREFIX@/local/etc/mailcap",
+ 	};
+ 	char *homepath;
+ 	char *template = NULL;