diff --git a/Makefile.system b/Makefile.system
index d0a837046..bd361a1a2 100644
--- a/Makefile.system
+++ b/Makefile.system
@@ -242,6 +242,10 @@ EXTRALIB	+= -lm
 NO_EXPRECISION = 1
 endif
 
+ifeq ($(OSNAME), Android)
+EXTRALIB	+= -lm
+endif
+
 ifeq ($(OSNAME), AIX)
 EXTRALIB	+= -lm
 endif
@@ -414,7 +418,6 @@ CCOMMON_OPT    += -fopenmp
 endif
 
 ifeq ($(C_COMPILER), CLANG)
-$(error OpenBLAS: Clang didn't support OpenMP yet.)
 CCOMMON_OPT    += -fopenmp
 endif
 
@@ -453,8 +456,9 @@ DYNAMIC_CORE += HASWELL ZEN
 endif
 endif
 
+# If DYNAMIC_CORE is not set, DYNAMIC_ARCH cannot do anything, so force it to empty
 ifndef DYNAMIC_CORE
-DYNAMIC_ARCH =
+override DYNAMIC_ARCH=
 endif
 endif
 
@@ -482,6 +486,23 @@ endif
 ifeq ($(ARCH), arm)
 NO_BINARY_MODE  = 1
 BINARY_DEFINED  = 1
+
+CCOMMON_OPT += -marm
+FCOMMON_OPT += -marm
+
+# If softfp abi is mentioned on the command line, force it.
+ifeq ($(ARM_SOFTFP_ABI), 1)
+CCOMMON_OPT += -mfloat-abi=softfp
+FCOMMON_OPT += -mfloat-abi=softfp
+endif
+
+ifeq ($(OSNAME), Android)
+ifeq ($(ARM_SOFTFP_ABI), 1)
+EXTRALIB	+= -lm
+else
+EXTRALIB	+= -Wl,-lm_hard
+endif
+endif
 endif
 
 ifeq ($(ARCH), arm64)
@@ -583,6 +604,23 @@ endif
 #  Fortran Compiler dependent settings
 #
 
+ifeq ($(F_COMPILER), FLANG)
+CCOMMON_OPT += -DF_INTERFACE_FLANG
+ifdef BINARY64
+ifdef INTERFACE64
+ifneq ($(INTERFACE64), 0)
+FCOMMON_OPT += -i8
+endif
+endif
+FCOMMON_OPT += -Wall
+else
+FCOMMON_OPT += -Wall
+endif
+ifeq ($(USE_OPENMP), 1)
+FCOMMON_OPT += -fopenmp
+endif
+endif
+
 ifeq ($(F_COMPILER), G77)
 CCOMMON_OPT += -DF_INTERFACE_G77
 FCOMMON_OPT += -Wall
@@ -1091,7 +1129,7 @@ LIB_COMPONENTS += LAPACK
 ifneq ($(NO_LAPACKE), 1)
 LIB_COMPONENTS += LAPACKE
 endif
-ifeq (${BUILD_RELAPACK}, 1)
+ifeq ($(BUILD_RELAPACK), 1)
 LIB_COMPONENTS += ReLAPACK
 endif
 endif