Auto-set Make.arm options, also remove NEON flags and bump LLVM to 3.6.0

Make.inc

@@ -381,6 +381,26 @@ else
 build_shlibdir = $(build_libdir)
 endif
 
+# If we are running on ARM, set certain options automatically
+ifneq (,$(findstring arm,$(ARCH)))
+LLVM_ASSERTIONS=1
+LLVM_FLAGS+="--with-cpu=cortex-a9 --with-float=hard --with-abi=aapcs-vfp --enable-assertions"
+
+OPENBLAS_DYNAMIC_ARCH=0
+OPENBLAS_TARGET_ARCH=ARMV7
+USE_BLAS64=0
+
+LLVM_VER=3.6.0
+
+USE_SYSTEM_LIBM=1
+USE_SYSTEM_FFTW=1
+USE_SYSTEM_GMP=1
+USE_SYSTEM_MPFR=1
+
+JCFLAGS += -fsigned-char
+endif
+
+
 ifeq (exists, $(shell [ -e $(JULIAHOME)/Make.user ] && echo exists ))
 include $(JULIAHOME)/Make.user
 endif

README.arm.md

@@ -24,23 +24,9 @@ following command:
 sudo apt-get install libblas3gf liblapack3gf libfftw3-dev libgmp3-dev libmpfr-dev libblas-dev liblapack-dev cmake gcc-4.7 g++-4.7 gfortran libgfortran3
 ````
 
-# ARM specific Make.user
+# ARM specific build problems
 
-Please start from the standard [build
-instructions](README.md#source-download-and-compilation), in
-particular the Linux notes.
-
-Next, create a file in the `julia` top-level directory called
-`Make.user` with the following contents:
-
-```
-include $(JULIAHOME)/Make.arm
-```
-
-Then proceed to build as described in the primary README. Just typing
-`make -j 4` at this stage should build julia.
-
-If you run in to issues building LLVM, see these notes:
+If you run into issues building LLVM, see these notes:
 [https://llvm.org/docs/HowToBuildOnARM.html](https://llvm.org/docs/HowToBuildOnARM.html)
 
 # Raspberry Pi