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Enable cross compilation to aarch64

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Change-Id: Iafc8ac60926f5286990ce63a4ff4f8b6a7c46bef
This commit is contained in:
George Wort
2021-05-17 15:17:38 +01:00
committed by Konstantinos Margaritis
parent feb2d3ccf7
commit b6c3ab723b
7 changed files with 86 additions and 15 deletions
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22
cmake/arm64-cross.cmake Normal file
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@@ -0,0 +1,22 @@
set(CMAKE_SYSTEM_NAME "Linux")
set(CMAKE_SYSTEM_PROCESSOR "aarch64")
# specify the cross compiler
set(CMAKE_C_COMPILER "$ENV{CROSS}gcc")
set(CMAKE_CXX_COMPILER "$ENV{CROSS}g++")
# where is the target environment
set(CMAKE_SYSROOT $ENV{CROSS_SYS})
set(Boost_INCLUDE_DIR $ENV{BOOST_PATH})
# for libraries and headers in the target directories
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
set(THREADS_PTHREAD_ARG "2" CACHE STRING "Result from TRY_RUN" FORCE)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -falign-functions=16 -falign-jumps=16 -falign-labels=16 -falign-loops=16" CACHE STRING "" FORCE)
set(GNUCC_ARCH "armv8.2-a+fp16+simd+rcpc+dotprod+crypto")
set(TUNE_FLAG "neoverse-n1")

3
cmake/config.h.in
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@@ -21,6 +21,9 @@
/* "Define if building for AARCH64" */
#cmakedefine ARCH_AARCH64
/* "Define if cross compiling for AARCH64" */
#cmakedefine CROSS_COMPILE_AARCH64
/* internal build, switch on dump support. */
#cmakedefine DUMP_SUPPORT

28
cmake/platform.cmake
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@@ -1,15 +1,21 @@
# determine the target arch
# really only interested in the preprocessor here
CHECK_C_SOURCE_COMPILES("#if !(defined(__x86_64__) || defined(_M_X64))\n#error not 64bit\n#endif\nint main(void) { return 0; }" ARCH_X86_64)
CHECK_C_SOURCE_COMPILES("#if !(defined(__i386__) || defined(_M_IX86))\n#error not 32bit\n#endif\nint main(void) { return 0; }" ARCH_IA32)
CHECK_C_SOURCE_COMPILES("#if !defined(__ARM_ARCH_ISA_A64)\n#error not 64bit\n#endif\nint main(void) { return 0; }" ARCH_AARCH64)
CHECK_C_SOURCE_COMPILES("#if !defined(__ARM_ARCH_ISA_ARM)\n#error not 32bit\n#endif\nint main(void) { return 0; }" ARCH_ARM32)
if (ARCH_X86_64 OR ARCH_AARCH64)
if (CROSS_COMPILE_AARCH64)
set(ARCH_AARCH64 TRUE)
set(ARCH_64_BIT TRUE)
message(STATUS "Cross compiling for aarch64")
else()
set(ARCH_32_BIT TRUE)
endif()
# really only interested in the preprocessor here
CHECK_C_SOURCE_COMPILES("#if !(defined(__x86_64__) || defined(_M_X64))\n#error not 64bit\n#endif\nint main(void) { return 0; }" ARCH_X86_64)
CHECK_C_SOURCE_COMPILES("#if !(defined(__i386__) || defined(_M_IX86))\n#error not 32bit\n#endif\nint main(void) { return 0; }" ARCH_IA32)
CHECK_C_SOURCE_COMPILES("#if !defined(__ARM_ARCH_ISA_A64)\n#error not 64bit\n#endif\nint main(void) { return 0; }" ARCH_AARCH64)
CHECK_C_SOURCE_COMPILES("#if !defined(__ARM_ARCH_ISA_ARM)\n#error not 32bit\n#endif\nint main(void) { return 0; }" ARCH_ARM32)
if (ARCH_X86_64 OR ARCH_AARCH64)
set(ARCH_64_BIT TRUE)
else()
set(ARCH_32_BIT TRUE)
endif()
endif()

19
cmake/setenv-arm64-cross.sh Normal file
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@@ -0,0 +1,19 @@
#!/bin/bash
export BOOST_VERSION=1_57_0
export BOOST_DOT_VERSION=${BOOST_VERSION//_/.}
export CROSS=<arm-cross-compiler-dir>/bin/aarch64-linux-gnu-
export CROSS_SYS=<arm-cross-compiler-system-dir>
# if [ ! -d "boost_$BOOST_VERSION" ];
# then
# wget -O boost_$BOOST_VERSION.tar.gz https://sourceforge.net/projects/boost/files/boost/$BOOST_DOT_VERSION/boost_$BOOST_VERSION.tar.gz/download
# tar xf boost_$BOOST_VERSION.tar.gz
# fi
if [ ! -d "pcre-8.41" ];
then
wget -O pcre-8.41.tar.bz2 https://ftp.pcre.org/pub/pcre/pcre-8.41.tar.bz2
tar xf pcre-8.41.tar.bz2
export PCRE_SOURCE=1
fi
export BOOST_PATH=<boost-source-dir>