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cross compile instructions; ignore toolchain files

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Signed-off-by: lizzie <lizzie@eden-emu.dev>
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lizzie 2025-11-02 22:27:01 +00:00
parent c2e046b275
commit abd7477350
6 changed files with 98 additions and 26 deletions
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32
docs/CrossCompile.md
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@ -15,34 +15,16 @@ A painless guide for cross compilation (or to test NCE) from a x86_64 system wit
This is a guide for FreeBSD users mainly.
Now you got a PowerPC sysroot - quickly decompress it somewhere, say `/home/user/opt/powerpc64le`.
Now you got a PowerPC sysroot - quickly decompress it somewhere, say `/home/user/opt/powerpc64le`. Create a toolchain file, for example `powerpc64le-toolchain.cmake`; always [consult the manual](https://man.freebsd.org/cgi/man.cgi?query=cmake-toolchains&sektion=7&manpath=FreeBSD+13.2-RELEASE+and+Ports).
```sh
fetch https://download.freebsd.org/ftp/releases/powerpc/powerpc64le/14.3-RELEASE/base.txz
mkdir -p ~/opt/powerpc64le/sysroot
mkdir -p ~/opt/powerpc64le/staging
cd ~/opt/powerpc64le/sysroot
tar -xvzf base.txz
```
Create a toolchain file, for example `powerpc64le-toolchain.cmake`; always [consult the manual](https://man.freebsd.org/cgi/man.cgi?query=cmake-toolchains&sektion=7&manpath=FreeBSD+13.2-RELEASE+and+Ports).
```sh
set(CMAKE_SYSROOT "$ENV{HOME}/opt/powerpc64le/sysroot")
set(CMAKE_STAGING_PREFIX "$ENV{HOME}/opt/powerpc64le/sysroot")
set(CMAKE_C_COMPILER /usr/bin/clang)
set(CMAKE_CXX_COMPILER /usr/bin/clang++)
set(CMAKE_C_FLAGS "--target=ppc64le-pc-freebsd")
set(CMAKE_CXX_FLAGS "--target=ppc64le-pc-freebsd")
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)
```
There is a script to automatically do all of this under `./tools/setup-cross-sysroot.sh`
Specify:
- `YUZU_USE_CPM`: Set this to `ON` so packages can be found and built if your sysroot doesn't have them.
- `YUZU_USE_EXTERNAL_FFMPEG`: Set this to `ON` as well.
Then run using a program such as QEMU to emulate userland syscalls:
```sh
cmake --build build-ppc64-pc-freebsd -t dynarmic_tests -- -j8 && qemu-ppc64-static -L $HOME/opt/ppc64-freebsd/sysroot ./build-ppc64-pc-freebsd/bin/dynarmic_tests
```