termux-chroot: bind /apex if it exists

Fixes https://github.com/termux/proot/issues/95

packages/proot/build.sh

@@ -4,7 +4,7 @@ TERMUX_PKG_LICENSE="GPL-2.0"
 # Just bump commit and version when needed:
 _COMMIT=1f4ec1c9d3fcc5d44c2a252eda6d09b0c24928cd
 TERMUX_PKG_VERSION=5.1.107
-TERMUX_PKG_REVISION=25
+TERMUX_PKG_REVISION=26
 TERMUX_PKG_SRCURL=https://github.com/termux/proot/archive/${_COMMIT}.zip
 TERMUX_PKG_SHA256=1119f1d27ca7a655eb627ad227fbd9c7a0343ea988dad3ed620fd6cd98723c20
 TERMUX_PKG_DEPENDS="libtalloc"

packages/proot/termux-chroot

@@ -39,6 +39,12 @@ if [ -d /sbin ] && [ -d /root ]; then
 	ARGS="$ARGS -b /sbin:/sbin -b /root:/root"
 fi
 
+# Android 10 needs /apex for /system/bin/linker:
+# https://github.com/termux/proot/issues/95#issuecomment-584779998
+if [ -d /apex ]; then
+	ARGS="$ARGS -b /apex:/apex"
+fi
+
 if [ -f /property_contexts ]; then
 	# Used by getprop (see https://github.com/termux/termux-packages/issues/1076)
 	# but does not exist on Android 8.