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BizHawk/waterbox/libcxx/configure-for-waterbox-phase--

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Revamp waterbox build environment and runtime. (#2027) Create an all new waterbox build environment: WSL2 + Ubuntu 20.04 LTS (Other linuxes may work) Musl libc with waterbox customizations LLVM's libclang-rt, libunwind, libcxxabi, libcxx Static linking to elf files Compared with the old system, this is easier to set up a dev env for and easier to update in the future. The executables are larger but produce smaller savestates due to static linking. The modern toolchain means advanced library features and language features that sometimes appear in some upstream cores will be reusable.
2020-05-20 19:34:24 +00:00
#!/bin/sh
MYPATH="`dirname \"$0\"`"
SYSROOT="`realpath \"$MYPATH/../sysroot\"`"
waterbox: move location of llvm-project
2020-06-18 18:06:23 +00:00
LLVMDIR="`realpath \"$MYPATH/../llvm-project\"`"
Revamp waterbox build environment and runtime. (#2027) Create an all new waterbox build environment: WSL2 + Ubuntu 20.04 LTS (Other linuxes may work) Musl libc with waterbox customizations LLVM's libclang-rt, libunwind, libcxxabi, libcxx Static linking to elf files Compared with the old system, this is easier to set up a dev env for and easier to update in the future. The executables are larger but produce smaller savestates due to static linking. The modern toolchain means advanced library features and language features that sometimes appear in some upstream cores will be reusable.
2020-05-20 19:34:24 +00:00
#To uselibclang-rt (and libunwind), we need to evict the gcc libs, but musl automatically puts that in the specs file
#and has no setting to remove it. Fix that here.
sed -i -e '13c\' -e '' "$SYSROOT/lib/musl-gcc.specs"
rm -rf build-
mkdir build-
cd build-
recompile libcxx and friends with nopic nopie, and recompile libsnes to test it out once again, roughly 10% filesize savings. seems to be about 3% faster too
2020-05-23 11:33:31 +00:00
export CFLAGS="-mabi=ms -mcmodel=large -mstack-protector-guard=global -no-pie -fno-pic -fno-pie"
export CXXFLAGS="-mabi=ms -mcmodel=large -mstack-protector-guard=global -no-pie -fno-pic -fno-pie"
Revamp waterbox build environment and runtime. (#2027) Create an all new waterbox build environment: WSL2 + Ubuntu 20.04 LTS (Other linuxes may work) Musl libc with waterbox customizations LLVM's libclang-rt, libunwind, libcxxabi, libcxx Static linking to elf files Compared with the old system, this is easier to set up a dev env for and easier to update in the future. The executables are larger but produce smaller savestates due to static linking. The modern toolchain means advanced library features and language features that sometimes appear in some upstream cores will be reusable.
2020-05-20 19:34:24 +00:00
cmake \
-DCMAKE_C_COMPILER="$SYSROOT/bin/musl-gcc" \
-DCMAKE_CXX_COMPILER="$SYSROOT/bin/musl-gcc" \
-DCOMPILER_RT_BUILD_CRT=OFF \
-DCOMPILER_RT_BUILD_SANITIZERS=OFF \
-DCOMPILER_RT_BUILD_XRAY=OFF \
-DCOMPILER_RT_BUILD_LIBFUZZER=OFF \
-DCOMPILER_RT_BUILD_PROFILE=OFF \
-DCOMPILER_RT_CAN_EXECUTE_TESTS=OFF \
-DCOMPILER_RT_USE_BUILTINS_LIBRARY=ON \
Linking and unwinds The goal here is to provide an unwind implementation that works. We (probably) don't have a working ldso, so reconfigure libunwind to work without that. To do that, it needs __eh_frame_* variables which it can addressof to find the locations of .eh_frame and .eh_frame_hdr. There is no way I could get gold to add these at all, so switch back to ld and add a custom linkscript. The custom linkscript gives us the opportunity to simplify the savestate memory mapping stuff inside ElfLoader, which should knock a bit of time off of state loads -- those VirtualProtect calls are not cheap. This also removes a potential source of nondeterminism with certain clever out of range pointers. Any waterbox core that I didn't recompile for this commit will assert now until it is recompiled, because .wbxsyscall is in the wrong palace.
2020-05-23 20:26:48 +00:00
-UCOMPILER_RT_BAREMETAL_BUILD \
-DCOMPILER_RT_BAREMETAL_BUILD=ON \
Revamp waterbox build environment and runtime. (#2027) Create an all new waterbox build environment: WSL2 + Ubuntu 20.04 LTS (Other linuxes may work) Musl libc with waterbox customizations LLVM's libclang-rt, libunwind, libcxxabi, libcxx Static linking to elf files Compared with the old system, this is easier to set up a dev env for and easier to update in the future. The executables are larger but produce smaller savestates due to static linking. The modern toolchain means advanced library features and language features that sometimes appear in some upstream cores will be reusable.
2020-05-20 19:34:24 +00:00
-DCMAKE_INSTALL_PREFIX="$SYSROOT" \
-DCMAKE_AR="/usr/bin/gcc-ar" \
-DCMAKE_RANLIB="/usr/bin/gcc-ranlib" \
waterbox: move location of llvm-project
2020-06-18 18:06:23 +00:00
../../llvm-project/compiler-rt