CI: build from old zig on x86_64-linux debug

This is to work around OOM on the CI server. Once #13560 is complete,
we can avoid having to replace the tarballs so often.

CMakeLists.txt

@@ -1038,8 +1038,6 @@ set(BUILD_ZIG2_ARGS
     -lc
     --pkg-begin build_options "${ZIG_CONFIG_ZIG_OUT}"
     --pkg-end
-    --pkg-begin compiler_rt "${CMAKE_SOURCE_DIR}/lib/compiler_rt.zig"
-    --pkg-end
 )
 
 if("${ZIG_EXECUTABLE}" STREQUAL "")

ci/linux/build-x86_64-debug.sh

@@ -8,13 +8,13 @@ ARCH="$(uname -m)"
 DEPS_LOCAL="$HOME/local"
 OLD_ZIG="$DEPS_LOCAL/bin/zig"
 TARGET="${ARCH}-linux-musl"
-MCPU="baseline"
 
 mkdir -p "$DEPS_LOCAL"
 cd "$DEPS_LOCAL"
 
-wget https://ziglang.org/deps/zig+llvm+lld+clang-x86_64-linux-musl-0.10.0-dev.4560+828735ac0.tar.xz
-tar x --strip-components=1 -f zig+llvm+lld+clang-x86_64-linux-musl-0.10.0-dev.4560+828735ac0.tar.xz
+OLD_ZIG_VERSION="0.11.0-dev.256+271cc52a1"
+wget https://ziglang.org/deps/zig+llvm+lld+clang-x86_64-linux-musl-$OLD_ZIG_VERSION.tar.xz
+tar x --strip-components=1 -f zig+llvm+lld+clang-x86_64-linux-musl-$OLD_ZIG_VERSION.tar.xz
 
 wget https://ziglang.org/deps/qemu-linux-x86_64-6.1.0.1.tar.xz
 tar x --strip-components=1 -f qemu-linux-x86_64-6.1.0.1.tar.xz
@@ -29,34 +29,24 @@ export PATH=$DEPS_LOCAL/bin:$PATH
 cd "$ZIGDIR"
 echo "building stage3-debug with zig version $($OLD_ZIG version)"
 
-export CC="$OLD_ZIG cc -target $TARGET -mcpu=$MCPU"
-export CXX="$OLD_ZIG c++ -target $TARGET -mcpu=$MCPU"
-
-mkdir build
-cd build
-cmake .. \
-  -DCMAKE_INSTALL_PREFIX="$(pwd)/stage3" \
-  -DCMAKE_PREFIX_PATH="$DEPS_LOCAL" \
-  -DCMAKE_BUILD_TYPE=Debug \
-  -DZIG_STATIC=ON \
-  -DZIG_USE_LLVM_CONFIG=OFF
-
-# Now cmake will use zig as the C/C++ compiler. We reset the environment variables
-# so that installation and testing do not get affected by them.
-unset CC
-unset CXX
-
-make -j2 install
+"$OLD_ZIG" build \
+  --search-prefix "$DEPS_LOCAL" \
+  --zig-lib-dir "$(pwd)/../lib" \
+  -Denable-stage1 \
+  -Dstatic-llvm \
+  -Drelease \
+  -Duse-zig-libcxx \
+  -Dtarget="$TARGET"
 
 echo "Looking for non-conforming code formatting..."
-stage3/bin/zig fmt --check .. \
+zig-out/bin/zig fmt --check .. \
   --exclude ../test/cases/ \
   --exclude ../build
 
 # simultaneously test building self-hosted without LLVM and with 32-bit arm
-stage3/bin/zig build -Dtarget=arm-linux-musleabihf
+zig-out/bin/zig build -Dtarget=arm-linux-musleabihf
 
-stage3/bin/zig build test \
+zig-out/bin/zig build test docs \
   -fqemu \
   -fwasmtime \
   -Dstatic-llvm \

ci/linux/build-x86_64-release.sh

@@ -13,8 +13,9 @@ MCPU="baseline"
 mkdir -p "$DEPS_LOCAL"
 cd "$DEPS_LOCAL"
 
-wget https://ziglang.org/deps/zig+llvm+lld+clang-x86_64-linux-musl-0.10.0-dev.4560+828735ac0.tar.xz
-tar x --strip-components=1 -f zig+llvm+lld+clang-x86_64-linux-musl-0.10.0-dev.4560+828735ac0.tar.xz
+OLD_ZIG_VERSION="0.11.0-dev.256+271cc52a1"
+wget https://ziglang.org/deps/zig+llvm+lld+clang-x86_64-linux-musl-$OLD_ZIG_VERSION.tar.xz
+tar x --strip-components=1 -f zig+llvm+lld+clang-x86_64-linux-musl-$OLD_ZIG_VERSION.tar.xz
 
 wget https://ziglang.org/deps/qemu-linux-x86_64-6.1.0.1.tar.xz
 tar x --strip-components=1 -f qemu-linux-x86_64-6.1.0.1.tar.xz

ci/windows/build.ps1

@@ -40,7 +40,6 @@ Write-Output "Building Zig..."
     -Denable-stage1 `
     -Dstatic-llvm `
     -Drelease `
-    -Dstrip `
     -Duse-zig-libcxx `
     -Dtarget="$TARGET"
 CheckLastExitCode