Modify setup in wrappers for /system/bin/ commands

On several devices several tools in /system/bin/ requires
LD_LIBRARY_PATH to contain /system/lib(64). Check for the bit-ness
with `getprop ro.product.cpu.abilist64`  and setup the environment
accordingly.

Closes #193.
Closes #206.

packages/jack/build.sh

@@ -4,7 +4,7 @@
 TERMUX_PKG_HOMEPAGE=http://tools.android.com/tech-docs/jackandjill
 TERMUX_PKG_DESCRIPTION="Java Android Compiler Kit"
 TERMUX_PKG_VERSION="1.1-mr2"
-TERMUX_PKG_BUILD_REVISION=2
+TERMUX_PKG_BUILD_REVISION=3
 TERMUX_PKG_PLATFORM_INDEPENDENT=true
 
 termux_step_make () {

packages/jack/jack.sh

@@ -4,15 +4,6 @@
 export ANDROID_DATA=@TERMUX_PREFIX@/var/android/
 mkdir -p $ANDROID_DATA/dalvik-cache
 
-# Find the right lib folder for dalvikvm. We cannot take LD_LIBRARY_PATH
-# as is since it contains Termux-supplied libraries which may clash with
-# system ones.
-LIBFOLDER=/system/lib
-if test -d /system/lib64; then
-	LIBFOLDER=/system/lib64
-fi
-
-LD_LIBRARY_PATH=$LIBFOLDER \
 exec dalvikvm -Xmx256m \
 -Djava.io.tmpdir=@TERMUX_PREFIX@/tmp \
 -cp @TERMUX_PREFIX@/share/dex/jack.jar com.android.jack.Main \

packages/termux-api/build.sh

@@ -1,6 +1,6 @@
 TERMUX_PKG_HOMEPAGE=http://termux.com/add-ons/api/
 TERMUX_PKG_DESCRIPTION="Termux API commands"
-TERMUX_PKG_VERSION=0.13
+TERMUX_PKG_VERSION=0.14
 
 termux_step_make_install () {
         mkdir -p $TERMUX_PREFIX/bin

packages/termux-api/termux-api.c

@@ -32,12 +32,6 @@ void exec_am_broadcast(int argc, char** argv, char* input_address_string, char*
         // Close stdin:
         close(STDIN_FILENO);
 
-        char const* const file = "/system/bin/am";
-        // Avoid the system am binary from linking to wrong libraries:
-        unsetenv("LD_LIBRARY_PATH");
-	// Ensure /system/bin/app_process is in path, which is needed by am in some systems:
-	putenv("PATH=/system/bin");
-
 	// The user is calculated from the uid in android.os.UserHandle#getUserId(int uid) as "uid / 100000", so we do the same:
 	uid_t current_uid = getuid();
 	int android_user_id = current_uid / 100000;
@@ -73,7 +67,10 @@ void exec_am_broadcast(int argc, char** argv, char* input_address_string, char*
         // End with NULL:
         child_argv[argc + extra_args] = NULL;
 
-        execv(file, child_argv);
+	// Use an a executable taking care of PATH and LD_LIBRARY_PATH:
+        char const* const am_executable = "/data/data/com.termux/files/usr/bin/am";
+        execv(am_executable, child_argv);
+
         perror("execv(\"/system/bin/am\")");
 	exit(1);
 }

packages/termux-tools/build.sh

@@ -1,21 +1,27 @@
 TERMUX_PKG_HOMEPAGE=http://termux.com/
 TERMUX_PKG_DESCRIPTION="Some tools for Termux"
-TERMUX_PKG_VERSION=0.24
+TERMUX_PKG_VERSION=0.25
 
 termux_step_make_install () {
 	$CXX $CFLAGS $LDFLAGS -std=c++14 -Wall -Wextra -pedantic -Werror $TERMUX_PKG_BUILDER_DIR/*.cpp -o $TERMUX_PREFIX/bin/termux-elf-cleaner
 
 	# Remove LD_LIBRARY_PATH from environment to avoid conflicting
 	# with system libraries that am may link against.
-	for tool in am dalvikvm df getprop logcat ping ping6 ip pm; do
+	for tool in am dalvikvm df getprop logcat ping ping6 ip pm settings; do
 		WRAPPER_FILE=$TERMUX_PREFIX/bin/$tool
 		echo '#!/bin/sh' > $WRAPPER_FILE
-		if [ $tool = am -o $tool = pm ]; then
+
-			# These tools require having /system/bin/app_process in the PATH,
+		# Some of these tools (am,dalvikvm,?) requires LD_LIBRARY_PATH setup on at least some devices:
-			# at least on a Nexus 6p running Android 6.0.
+		if [ $tool != getprop ]; then
-			echo -n 'PATH=$PATH:/system/bin ' >> $WRAPPER_FILE
+			echo 'if [ -n "`getprop ro.product.cpu.abilist64`" ]; then BITS=64; else BITS=; fi' >> $WRAPPER_FILE
+			echo -n 'LD_LIBRARY_PATH=/system/lib$BITS ' >> $WRAPPER_FILE
 		fi
-		echo "LD_LIBRARY_PATH= exec /system/bin/$tool \$@" >> $WRAPPER_FILE
+
+		# Some tools require having /system/bin/app_process in the PATH,
+		# at least am&pm on a Nexus 6p running Android 6.0:
+		echo -n 'PATH=$PATH:/system/bin ' >> $WRAPPER_FILE
+
+		echo "exec /system/bin/$tool \$@" >> $WRAPPER_FILE
 		chmod +x $TERMUX_PREFIX/bin/$tool
 	done
 

packages/termux-tools/termux-reload-settings

@@ -9,4 +9,4 @@ if [ "$#" != "0" ]; then
         exit
 fi
 
-LD_LIBRARY_PATH= am broadcast --user 0 -a com.termux.app.reload_style com.termux > /dev/null
+am broadcast --user 0 -a com.termux.app.reload_style com.termux > /dev/null

packages/termux-tools/termux-setup-storage

@@ -7,6 +7,6 @@ if [ "$#" != "0" ]; then
         exit
 fi
 
-LD_LIBRARY_PATH= am broadcast --user 0 \
+am broadcast --user 0 \
 		 --es com.termux.app.reload_style storage \
 		 -a com.termux.app.reload_style com.termux > /dev/null