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Crafter.Build/build.sh
Jorijn van der Graaf dc239f4257
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musl host support: bootstrap and run on Alpine (x86_64-alpine-linux-musl) 
The Linux host code paths were gated on the x86_64_pc_linux_gnu target
define alone, and LoadProject hardcoded --target=x86_64-pc-linux-gnu when
compiling project.cpp and the module PCMs. Both break on musl hosts: the
glibc release launcher cannot run there at all (no glibc loader; gcompat
lacks libgcc_s and the __isoc23_* symbols), and a musl-built launcher
would still compile project.cpp for the wrong libc.

- The host gates test clang's __linux__ instead of one triple's define:
  they mean "Linux host", whatever the libc (or, later, the CPU).
- LoadProject derives the host triple from HostTarget() (clang's
  -print-target-triple), which is also more correct on glibc distros
  whose triple isn't x86_64-pc-linux-gnu.
- project.cpp / the cmake libc++ flags treat any *-linux-gnu or
  *-linux-musl target as Linux.
- build.sh targets the host toolchain's triple (CRAFTER_BUILD_TARGET
  overrides) and derives the per-target define from it. On Arch this is
  byte-for-byte the previous behaviour.
- CI: a release-musl job bootstraps on alpine:edge, runs the tests, and
  attaches crafter-build-linux-x86_64-musl-v2.tar.gz to the rolling
  latest release (via the API, so the glibc assets survive). Dynamic
  against musl libc++: the launcher dlopens project.so, so it cannot be
  fully static.

First consumer: imsd's package CI, which cross-compiles for aarch64 from
an Alpine container.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-09-02 00:05:44 +02:00

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#SPDX-License-Identifier: LGPL-3.0-only
#SPDX-FileCopyrightText: Copyright (C) 2026 Catcrafts®
mkdir -p build
mkdir -p bin
mkdir -p lib
mkdir -p share/crafter-build
mkdir -p share/crafter-build/wasi-runtime
cp wasi-runtime/runtime.js share/crafter-build/wasi-runtime/
cp wasi-runtime/index.html.in share/crafter-build/wasi-runtime/
cp interfaces/Crafter.Build.cppm share/crafter-build/
cp interfaces/Crafter.Build-Shader.cppm share/crafter-build/
cp interfaces/Crafter.Build-Platform.cppm share/crafter-build/
cp interfaces/Crafter.Build-Interface.cppm share/crafter-build/
cp interfaces/Crafter.Build-Implementation.cppm share/crafter-build/
cp interfaces/Crafter.Build-External.cppm share/crafter-build/
cp interfaces/Crafter.Build-Clang.cppm share/crafter-build/
cp interfaces/Crafter.Build-Test.cppm share/crafter-build/
cp interfaces/Crafter.Build-Lint.cppm share/crafter-build/
cp interfaces/Crafter.Build-Progress.cppm share/crafter-build/
cp interfaces/Crafter.Build-Asset.cppm share/crafter-build/
cp interfaces/Crafter.Build-Api.h share/crafter-build/
git clone https://github.com/KhronosGroup/glslang.git ./build/glslang
current_dir=$(pwd)
cd ./build/glslang
cmake -B build \
-DCMAKE_C_COMPILER=clang \
-DCMAKE_CXX_COMPILER=clang++ \
-DCMAKE_CXX_FLAGS="-stdlib=libc++" \
-DCMAKE_EXE_LINKER_FLAGS="-stdlib=libc++" \
-DCMAKE_SHARED_LINKER_FLAGS="-stdlib=libc++" \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_ARCHIVE_OUTPUT_DIRECTORY=$current_dir/build \
-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=$current_dir/build \
-DENABLE_OPT=OFF
cmake --build build --config Release
cd ../../
MARCH="${CRAFTER_BUILD_MARCH:-native}"
MTUNE="${CRAFTER_BUILD_MTUNE:-native}"
# The bootstrap targets the host toolchain's own triple: x86_64-pc-linux-gnu
# on glibc distros, x86_64-alpine-linux-musl on Alpine. Override with
# CRAFTER_BUILD_TARGET. The per-target define (triple with '-' -> '_') is the
# same one the self-hosted build emits, so the host-gated code paths match.
TARGET="${CRAFTER_BUILD_TARGET:-$(clang++ -print-target-triple)}"
TARGET_DEFINE="CRAFTER_BUILD_CONFIGURATION_TARGET_$(printf '%s' "$TARGET" | tr - _)"
# Crafter.Build-Lint includes libclang's clang-c/Index.h. glibc distros keep
# it in /usr/include; Alpine keeps LLVM under /usr/lib/llvmNN, so ask
# llvm-config and add the dir when it is not already on the default path
# (never add /usr/include itself: that breaks libc++'s #include_next).
LLVM_INCDIR="$(llvm-config --includedir 2>/dev/null || true)"
case "$LLVM_INCDIR" in ""|/usr/include) LLVM_INCFLAG="" ;; *) LLVM_INCFLAG="-I$LLVM_INCDIR" ;; esac
common_options="--target=$TARGET -stdlib=libc++ -I./build/glslang $LLVM_INCFLAG -std=c++26 -O3 -march=$MARCH -mtune=$MTUNE -fprebuilt-module-path=./build -D $TARGET_DEFINE -D CRAFTER_BUILD_CONFIGURATION_TYPE_EXECUTABLE -c"
clang++ --target=$TARGET -std=c++26 -stdlib=libc++ -O3 -march=$MARCH -mtune=$MTUNE -Wno-reserved-identifier -Wno-reserved-module-identifier --precompile /usr/share/libc++/v1/std.cppm -o ./build/std.pcm
clang++ $common_options -fmodule-output interfaces/Crafter.Build-Shader.cppm -o ./build/Crafter.Build-Shader.o
clang++ $common_options -fmodule-output interfaces/Crafter.Build-Platform.cppm -o ./build/Crafter.Build-Platform.o
clang++ $common_options -fmodule-output interfaces/Crafter.Build-Interface.cppm -o ./build/Crafter.Build-Interface.o
clang++ $common_options -fmodule-output interfaces/Crafter.Build-Implementation.cppm -o ./build/Crafter.Build-Implementation.o
clang++ $common_options -fmodule-output interfaces/Crafter.Build-External.cppm -o ./build/Crafter.Build-External.o
clang++ $common_options -fmodule-output interfaces/Crafter.Build-Clang.cppm -o ./build/Crafter.Build-Clang.o
clang++ $common_options -fmodule-output interfaces/Crafter.Build-Test.cppm -o ./build/Crafter.Build-Test.o
clang++ $common_options -fmodule-output interfaces/Crafter.Build-Lint.cppm -o ./build/Crafter.Build-Lint.o
clang++ $common_options -fmodule-output interfaces/Crafter.Build-Progress.cppm -o ./build/Crafter.Build-Progress.o
# Asset partition: bootstrap compiles it WITHOUT CRAFTER_BUILD_HAS_ASSET so
# CompressAsset takes the stub branch and the impl unit doesn't try to
# `import Crafter.Asset` (no Crafter.Asset PCM exists at this stage — the
# self-host pass that follows wires in the real dep).
clang++ $common_options -fmodule-output interfaces/Crafter.Build-Asset.cppm -o ./build/Crafter.Build-Asset.o
clang++ $common_options -fmodule-output interfaces/Crafter.Build.cppm -o ./build/Crafter.Build.o
clang++ $common_options ./implementations/Crafter.Build-Shader.cpp -o ./build/Crafter.Build-Shader_impl.o
clang++ $common_options ./implementations/Crafter.Build-Platform.cpp -o ./build/Crafter.Build-Platform_impl.o
clang++ $common_options ./implementations/Crafter.Build-Interface.cpp -o ./build/Crafter.Build-Interface_impl.o
clang++ $common_options ./implementations/Crafter.Build-Implementation.cpp -o ./build/Crafter.Build-Implementation_impl.o
clang++ $common_options ./implementations/Crafter.Build-External.cpp -o ./build/Crafter.Build-External_impl.o
clang++ $common_options ./implementations/Crafter.Build-Clang.cpp -o ./build/Crafter.Build-Clang_impl.o
clang++ $common_options ./implementations/Crafter.Build-Test.cpp -o ./build/Crafter.Build-Test_impl.o
clang++ $common_options ./implementations/Crafter.Build-Lint.cpp -o ./build/Crafter.Build-Lint_impl.o
clang++ $common_options ./implementations/Crafter.Build-Progress.cpp -o ./build/Crafter.Build-Progress_impl.o
clang++ $common_options ./implementations/Crafter.Build-Asset.cpp -o ./build/Crafter.Build-Asset_impl.o
clang++ $common_options ./implementations/main.cpp -o ./build/main.o
ar rcs ./lib/libcrafter-build.a \
./build/Crafter.Build-Shader.o \
./build/Crafter.Build-Platform.o \
./build/Crafter.Build-Interface.o \
./build/Crafter.Build-Implementation.o \
./build/Crafter.Build-External.o \
./build/Crafter.Build-Clang.o \
./build/Crafter.Build-Test.o \
./build/Crafter.Build-Lint.o \
./build/Crafter.Build-Progress.o \
./build/Crafter.Build-Asset.o \
./build/Crafter.Build.o \
./build/Crafter.Build-Shader_impl.o \
./build/Crafter.Build-Platform_impl.o \
./build/Crafter.Build-Interface_impl.o \
./build/Crafter.Build-Implementation_impl.o \
./build/Crafter.Build-External_impl.o \
./build/Crafter.Build-Clang_impl.o \
./build/Crafter.Build-Test_impl.o \
./build/Crafter.Build-Lint_impl.o \
./build/Crafter.Build-Progress_impl.o \
./build/Crafter.Build-Asset_impl.o
clang++ --target=$TARGET -std=c++26 -stdlib=libc++ -O3 -march=$MARCH -mtune=$MTUNE -fuse-ld=lld \
-Wl,--export-dynamic \
-L./build \
./build/Crafter.Build-Shader.o \
./build/Crafter.Build-Platform.o \
./build/Crafter.Build-Interface.o \
./build/Crafter.Build-Implementation.o \
./build/Crafter.Build-External.o \
./build/Crafter.Build-Clang.o \
./build/Crafter.Build-Test.o \
./build/Crafter.Build-Lint.o \
./build/Crafter.Build-Progress.o \
./build/Crafter.Build-Asset.o \
./build/Crafter.Build.o \
./build/Crafter.Build-Shader_impl.o \
./build/Crafter.Build-Platform_impl.o \
./build/Crafter.Build-Interface_impl.o \
./build/Crafter.Build-Implementation_impl.o \
./build/Crafter.Build-External_impl.o \
./build/Crafter.Build-Clang_impl.o \
./build/Crafter.Build-Test_impl.o \
./build/Crafter.Build-Lint_impl.o \
./build/Crafter.Build-Progress_impl.o \
./build/Crafter.Build-Asset_impl.o \
./build/main.o \
-lSPIRV -lGenericCodeGen -lglslang -lOSDependent -lMachineIndependent -lglslang-default-resource-limits \
-ldl \
-o ./bin/crafter-build
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