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gcc: add x86 cross-compiler for arm host

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When compiling in the Docker container on an M1 MacBook, or any other
ARM host, the CMAKE_HOST_APPLE variable is not set. Therefore, no
CROSS_COMPILER_PREFIX is set and x86 applications will not compile.

This commit adds another check to see if the host processor is an ARM
chipset, and sets the appropriate CROSS_COMPILER_PREFIX variable.

Signed-off-by: Chris Guikema <chris.guikema@dornerworks.com>
This commit is contained in:
Chris Guikema 2022-10-19 15:33:02 -04:00 committed by Kent McLeod
parent 6e1bb9d2a8
commit da39051cbe
1 changed files with 3 additions and 0 deletions
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3
gcc.cmake
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@ -109,6 +109,9 @@ if("${CROSS_COMPILER_PREFIX}" STREQUAL "")
if(CMAKE_HOST_APPLE)
# CMAKE_HOST_APPLE is a CMake variable that evaluates to True on a Mac OSX system
FindPrefixedGCC(CROSS_COMPILER_PREFIX "x86_64-linux-gnu-" "x86_64-unknown-linux-gnu-")
elseif("${CMAKE_HOST_SYSTEM_PROCESSOR}" STREQUAL "aarch64")
# If we're on an aarch64 host, gcc won't support x86. Set an x86 compatible toolchain
FindPrefixedGCC(CROSS_COMPILER_PREFIX "x86_64-linux-gnu-" "x86_64-unknown-linux-gnu-")
endif()
endif()
endif()