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buildme: Add option for ARM64 builds via either native or cross compile

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Supports native builds on aarch64 machines.

Supports making a 64-bit build via either cross compiling, or on
aarch64 machines.
Both options require the addition of --aarch64 to the command line,
otherwise 32-bit libraries will be built.

Cross compiling requires the aarch64-linux-gnu- compile tools to
be installed (packages gcc-5-aarch64-linux-gnu and g++-aarch64-linux-gnu
on Ubuntu).
This commit is contained in:
Dave Stevenson
2019-03-04 15:23:31 +00:00
committed by Phil Elwell
parent 0b1293c70d
commit 8b8f6571b6
3 changed files with 38 additions and 5 deletions
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4
README.md
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@@ -2,7 +2,9 @@ This repository contains the source code for the ARM side libraries used on Rasp
These typically are installed in /opt/vc/lib and includes source for the ARM side code to interface to:
EGL, mmal, GLESv2, vcos, openmaxil, vchiq_arm, bcm_host, WFC, OpenVG.
Use buildme to build. It requires cmake to be installed and an arm cross compiler. It is set up to use this one:
Use buildme to build. It requires cmake to be installed and an arm cross compiler. For 32 bit cross compiliation it is set up to use this one:
https://github.com/raspberrypi/tools/tree/master/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian
Whilst 64 bit userspace is not officially supported, some of the libraries will work for it. To cross compile, install gcc-aarch64-linux-gnu and g++-aarch64-linux-gnu first. For both native and cross compiles, add the option ```--aarch64``` to the buildme command.
Note that this repository does not contain the source for the edidparser and vcdbg binaries due to licensing restrictions.

17
buildme
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@@ -1,19 +1,28 @@
#!/bin/bash
BUILDTYPE=Release
ARCH=`arch`
ARM64=OFF
CMAKE_TOOLCHAIN_FILE=../../../makefiles/cmake/toolchains/arm-linux-gnueabihf.cmake
if [ "$1" = "--debug" ]; then
BUILDTYPE=Debug
shift
fi
if [ "$1" = "--arm64" ]; then
ARM64=ON
CMAKE_TOOLCHAIN_FILE=../../../makefiles/cmake/toolchains/aarch64-linux-gnu.cmake
shift
fi
BUILDSUBDIR=`echo $BUILDTYPE | tr '[A-Z]' '[a-z]'`;
if [ "armv6l" = `arch` ] || [ "armv7l" = `arch` ]; then
if [ $ARCH = "armv6l" ] || [ $ARCH = "armv7l" ] || [ $ARCH = "aarch64" ]; then
# Native compile on the Raspberry Pi
mkdir -p build/raspberry/$BUILDSUBDIR
pushd build/raspberry/$BUILDSUBDIR
cmake -DCMAKE_BUILD_TYPE=$BUILDTYPE ../../..
if [ "armv6l" = `arch` ]; then
cmake -DCMAKE_BUILD_TYPE=$BUILDTYPE -DARM64=$ARM64 ../../..
if [ $ARCH = "armv6l" ]; then
make
else
make -j4
@@ -34,7 +43,7 @@ else
# Cross compile on a more capable machine
mkdir -p build/arm-linux/$BUILDSUBDIR
pushd build/arm-linux/$BUILDSUBDIR
cmake -DCMAKE_TOOLCHAIN_FILE=../../../makefiles/cmake/toolchains/arm-linux-gnueabihf.cmake -DCMAKE_BUILD_TYPE=$BUILDTYPE ../../..
cmake -DCMAKE_TOOLCHAIN_FILE=$CMAKE_TOOLCHAIN_FILE -DCMAKE_BUILD_TYPE=$BUILDTYPE -DARM64=$ARM64 ../../..
make -j `nproc`
if [ "$1" != "" ]; then

22
makefiles/cmake/toolchains/aarch64-linux-gnu.cmake Normal file
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@@ -0,0 +1,22 @@
#
# CMake defines to cross-compile to ARM/Linux on BCM2708 using glibc.
#
SET(CMAKE_SYSTEM_NAME Linux)
SET(CMAKE_C_COMPILER aarch64-linux-gnu-gcc)
SET(CMAKE_CXX_COMPILER aarch64-linux-gnu-g++)
SET(CMAKE_ASM_COMPILER aarch64-linux-gnu-gcc)
SET(CMAKE_SYSTEM_PROCESSOR arm)
#ADD_DEFINITIONS("-march=armv6")
#add_definitions("-mcpu=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard -marm")
# rdynamic means the backtrace should work
IF (CMAKE_BUILD_TYPE MATCHES "Debug")
add_definitions(-rdynamic)
ENDIF()
# avoids annoying and pointless warnings from gcc
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -U_FORTIFY_SOURCE")
SET(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -c")