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Revision fa136cb5417a554c2b7c85001235e2aace214732 authored by Steven Johnson on 29 August 2023, 16:21:59 UTC, committed by GitHub on 29 August 2023, 16:21:59 UTC 
Ensure that multitarget AOT builds have consistent random sequence (#7717)
 
* Fix CMake test for generator_aot_multitarget

* Ensure that multitarget AOT builds have consistent random numbers

If a Generator uses random_float() (or the int or uint versions), and is used in a multitarget build, we weren't resetting the counters for random generation between each subtarget... meaning that each subtarget would get a different random sequence, leading to some ery hard-to-debug test failures when running on different hardware variants. This PR ensures that the relevant counters are all reset before each subtarget is generated, so that each should see the same sequence of random number generation.

* Update CMakeLists.txt

* Update multitarget_aottest.cpp

* Combine float/uint counters
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toolchain.linux-arm32.cmake 
# Toolchain for cross-compiling to Linux-arm32 on a Linux-x86-64 or Linux-aarch64 host.
#
# If you just want to crosscompile, you need to install:
#
#   apt-get install gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf binutils-arm-linux-gnueabihf
#
# On an aarch64 host, you can also run the results if you:
#
#   dpkg --add-architecture armhf
#   apt-get install libc6:armhf libstdc++6:armhf

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR arm)

if (NOT DEFINED CMAKE_C_COMPILER)
    set(CMAKE_C_COMPILER arm-linux-gnueabihf-gcc)
endif ()
if (NOT DEFINED CMAKE_CXX_COMPILER)
    set(CMAKE_CXX_COMPILER arm-linux-gnueabihf-g++)
endif ()

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

# add_custom_command() will make bad decisions about running the command
# when crosscompiling (it won't expand the target into a full path).
# Setting CMAKE_CROSSCOMPILING_EMULATOR to /usr/bin/env tricks it into
# doing the right thing (ie, running it directly). Note that if you want
# to build/run on x86-64 systems, you could set this to some qemu command\
# (though the results will likely be very slow).
set(CMAKE_CROSSCOMPILING_EMULATOR /usr/bin/env)
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