Build target armel (not armhf), for legacy armv5-like devices (#5060)

mk/armel.mk

@@ -0,0 +1,25 @@
+ARCH=arm
+CROSS_ROOT=/usr/bin
+CROSS_TRIPLET=${ARCH}-linux-gnueabi
+
+CC=${CROSS_ROOT}/${CROSS_TRIPLET}-gcc
+USERCC=${CROSS_ROOT}/${CROSS_TRIPLET}-gcc
+
+RANLIB=${CROSS_TRIPLET}-ranlib
+CC_AR=${CROSS_ROOT}/${CROSS_TRIPLET}-ar -r ${LIBAR}
+
+ONELIB=0
+OSTYPE=android
+LINK=
+PICFLAGS=-fPIC -fpic
+CFLAGS+=${PICFLAGS}
+LDFLAGS+=-ldl -pthread -lutil
+CC_LIB=${CC} -shared -o
+CFLAGS_INCLUDE=-I
+LDFLAGS_LINK=-l
+LDFLAGS_LINKPATH=-L
+CFLAGS_OPT0=-O0
+CFLAGS_OPT1=-O1
+CFLAGS_OPT2=-O2
+CFLAGS_OPT3=-O3
+CFLAGS_DEBUG=-g