From 9d1f6a1398fb7faca8b6370edcafa7b0f590eef1 Mon Sep 17 00:00:00 2001
From: Holger Wirtz <wirtz@parasitstudio.de>
Date: Sun, 13 Mar 2022 11:55:00 +0100
Subject: [PATCH] Installation example in README.md: Added different compiler
 installation. Added ARM_MATH_NEON to src/Makefile.

---
 README.md    | 12 ++++++++++--
 src/Makefile |  3 ++-
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index dc8ecbf..7d805bc 100644
--- a/README.md
+++ b/README.md
@@ -88,13 +88,21 @@ cd MiniDexed
 # Recursively pull git submodules
 git submodule update --init --recursive
 
+# Choose your RPi
+export RPI=4
+
 # Install toolchain
-wget -q https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf.tar.xz
+if [ "${RPI}" -gt 2 ]
+then
+	wget -q https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf.tar.xz
+else
+	wget -q https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-arm-none-eabi.tar.xz
+fi
 tar xf gcc-arm-*-*.tar.xz 
 export PATH=$(readlink -f ./gcc-*/bin/):$PATH
 
 # Build dependencies and MiniDexed
-RPI=4 ./build.sh
+./build.sh
 
 # Get Raspberry Pi boot files
 cd ./circle-stdlib/libs/circle/boot
diff --git a/src/Makefile b/src/Makefile
index 68fa891..f5a98bd 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -30,7 +30,8 @@ INCLUDE += -I $(SYNTH_DEXED_DIR)
 INCLUDE += -I $(CMSIS_CORE_INCLUDE_DIR)
 INCLUDE += -I $(CMSIS_DSP_INCLUDE_DIR)
 INCLUDE += -I $(CMSIS_DSP_PRIVATE_INCLUDE_DIR)
+CXXFLAGS += -DARM_MATH_NEON
 
-EXTRACLEAN = $(SYNTH_DEXED_DIR)/*.o $(SYNTH_DEXED_DIR)/*.d $(CMSIS_DSP_SOURCE_DIR)/SupportFunctions/*.d
+EXTRACLEAN = $(SYNTH_DEXED_DIR)/*.o $(SYNTH_DEXED_DIR)/*.d $(CMSIS_DSP_SOURCE_DIR)/SupportFunctions/*.o $(CMSIS_DSP_SOURCE_DIR)/SupportFunctions/*.d
 
 include ./Rules.mk