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cmake: treat building for another ISA as a cross-compile. #1220

Merged
merged 1 commit into from
Sep 22, 2024
Merged

cmake: treat building for another ISA as a cross-compile. #1220

merged 1 commit into from
Sep 22, 2024

Commits on Sep 20, 2024

  1. cmake: treat building for another ISA as a cross-compile. 

    CMake appears to have the notion that a build is only a cross-compile if
the targt *operating system* is different.  This is an incorrect notion,
as even if the target is the *same* OS but a different instruction set,
you may not be able to do tests that involve compiling and running a
program.

Check whether CMAKE_GENERATOR_PLATFORM is set and has a value different
from that of CMAKE_HOST_SYSTEM_PROCESSOR and, if that's the case, set
CMAKE_CROSSCOMPILING to TRUE.

This comes from libpcap, where the equivalent change fixed issue
the-tcpdump-group/libpcap#1352.

(A different strategy may be necessary for cross-builds with UNIX
toolchains.)
    @guyharris
    guyharris committed Sep 20, 2024
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