p7zip: add package

I put almost 3 hours on this!

It ships with a lot of makefiles for various platforms, notably
one for android_arm. I patched it a bit because Termux already gives
many of the goodies. Probably it could be simplified.

Most of the time went on tinkering with flags and waiting for the
Docker container to reload the new files...there must be a better way!

p7zip doesn't seem to honor $prefix, instead it uses $DEST_HOME.

packages/p7zip/build.sh

@@ -0,0 +1,26 @@
+# adapted from archlinux PKGBUILD
+pkgname=p7zip
+pkgver=15.09
+TERMUX_PKG_VERSION=$pkgver
+TERMUX_PKG_HOMEPAGE=http://p7zip.sourceforge.net/
+TERMUX_PKG_DESCRIPTION="Command-line version of the 7zip compressed file archiver"
+TERMUX_PKG_SRCURL="http://downloads.sourceforge.net/project/${pkgname}/${pkgname}/${pkgver}/${pkgname}_${pkgver}_src_all.tar.bz2"
+TERMUX_PKG_BUILD_IN_SRC=yes
+TERMUX_PKG_FOLDERNAME=${pkgname}_${pkgver}
+
+termux_step_configure () {
+	cp makefile.android_arm makefile.machine
+
+	rm GUI/kde4/p7zip_compress.desktop
+
+	sed -i 's/wx-config/wx-config-2.8/g' CPP/7zip/TEST/TestUI/makefile \
+	CPP/7zip/UI/{FileManager,GUI,P7ZIP}/makefile
+}
+
+termux_step_make () {
+	LD="$CC $LDFLAGS" CC="$CC $CFLAGS $CPPFLAGS $LDFLAGS" make -j $TERMUX_MAKE_PROCESSES all3 OPTFLAGS="${CXXFLAGS}" DEST_HOME=$TERMUX_PREFIX
+}
+
+termux_step_make_install () {
+	make install DEST_HOME=$TERMUX_PREFIX
+}

packages/p7zip/makefile.patch

@@ -0,0 +1,70 @@
+diff -u -r orig/makefile.android_arm p7zip_15.09/makefile.android_arm
+--- orig/makefile.android_arm	2015-09-13 15:15:17.000000000 -0300
++++ p7zip_15.09/makefile.android_arm	2015-12-21 13:50:55.895794056 -0300
+@@ -1,12 +1,7 @@
+ #
+-# makefile for ANDROID (generic ARM)
++# makefile for Android with Termux
+ #
+ 
+-ANDROID_NDK_HOME=$(HOME)/ANDROID/android-ndk-r5c
+-ANDROID_NDK_BIN=$(ANDROID_NDK_HOME)/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin
+-
+-# -fpic -Os
+-# -fstack-protector 
+ ANDROID_FLAGS=\
+  -ffunction-sections \
+  -funwind-tables \
+@@ -16,27 +11,18 @@
+  -D__ARM_ARCH_5TE__  \
+  -DANDROID \
+  -DANDROID_NDK \
++ -D_UNICODE \
++ -DUNICODE \
+  -Wno-psabi  \
+- -march=armv5te  \
+- -mtune=xscale  \
+- -msoft-float  \
+  -mthumb \
+  -fomit-frame-pointer \
+  -fno-strict-aliasing -finline-limit=64 \
+- -I$(ANDROID_NDK_HOME)/sources/cxx-stl/system/include \
+- -I$(ANDROID_NDK_HOME)/platforms/android-3/arch-arm/usr/include \
+- -Wa,--noexecstack 
++ -Wa,--noexecstack
+ 
+ ANDROID_LINK=-v \
+  -Wl,--gc-sections -Wl,-z,nocopyreloc \
+- --sysroot=$(ANDROID_NDK_HOME)/platforms/android-3/arch-arm \
+- $(ANDROID_NDK_HOME)/platforms/android-3/arch-arm/usr/lib/libc.so \
+- $(ANDROID_NDK_HOME)/platforms/android-3/arch-arm/usr/lib/libstdc++.so \
+- $(ANDROID_NDK_HOME)/platforms/android-3/arch-arm/usr/lib/libm.so  \
+  -Wl,--no-undefined -Wl,-z,noexecstack  \
+- -L$(ANDROID_NDK_HOME)/platforms/android-3/arch-arm/usr/lib \
+- -lstdc++ -Wl,-rpath-link=$(ANDROID_NDK_HOME)/platforms/android-3/arch-arm/usr/lib \
+- -lsupc++
++ -lstdc++ -lsupc++
+ 
+ OPTFLAGS=-O3 -s
+ 
+@@ -45,14 +31,14 @@
+ 	$(ANDROID_FLAGS) \
+ 	$(LOCAL_FLAGS)
+ 
+-CXX=$(ANDROID_NDK_BIN)/arm-linux-androideabi-g++ -fexceptions -frtti
+-CC=$(ANDROID_NDK_BIN)/arm-linux-androideabi-gcc
+-CC_SHARED= -fpic
+-LINK_SHARED=-fpic -shared
++CXX=arm-linux-androideabi-g++ -fexceptions -frtti
++CC=arm-linux-androideabi-gcc
++
++CC_SHARED=-fPIC
++LINK_SHARED=-fPIC -shared
+ 
+ LOCAL_LIBS=$(ANDROID_LINK)
+-LOCAL_LIBS_DLL=$(LOCAL_LIBS) # -ldl
++LOCAL_LIBS_DLL=$(LOCAL_LIBS)
+ 
+ OBJ_CRC32=$(OBJ_CRC32_C)
+ OBJ_AES=
+-