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Fix final binaries leaking build paths #123

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Merged
Arshia001 merged 1 commit into from
Jun 22, 2026
Merged

Fix final binaries leaking build paths #123

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13 changes: 13 additions & 0 deletions build32-general.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,13 @@ sysroot_output="sysroot$NAME"
export TARGET_ARCH=wasm32
export TARGET_OS=wasix

# Map the two absolute paths that leak into compiler-rt/libcxx debug info to
# fixed tokens, so the archives are byte-reproducible across build dirs and LLVM
# installs: the tree root (sources + cmake build dirs) and clang's resource dir
# (builtin headers libc++ pulls in, e.g. /usr/lib/llvm21 vs a Nix store path).
CLANG_RESOURCE_DIR="$(${CC:-clang} -print-resource-dir)"
PREFIX_MAP_FLAGS="-ffile-prefix-map=$REPO_ROOT=. -ffile-prefix-map=$CLANG_RESOURCE_DIR=/clang"

sed_in_place() {
local expr="$1"
local file="$2"
Expand Down Expand Up @@ -80,6 +87,9 @@ compiler_rt() {
-DCMAKE_SYSTEM_VERSION=1 \
-DCMAKE_SYSTEM_PROCESSOR=wasm32 \
-DCMAKE_BUILD_TYPE=RelWithDebInfo \
-DCMAKE_C_FLAGS="$PREFIX_MAP_FLAGS" \
-DCMAKE_CXX_FLAGS="$PREFIX_MAP_FLAGS" \
-DCMAKE_ASM_FLAGS="$PREFIX_MAP_FLAGS" \
-DCMAKE_C_COMPILER_WORKS=ON \
-DCMAKE_CXX_COMPILER_WORKS=ON \
-DCMAKE_C_LINKER_DEPFILE_SUPPORTED=OFF \
Expand Down Expand Up @@ -190,6 +200,9 @@ libcxx() {
cmake \
-DCMAKE_POSITION_INDEPENDENT_CODE="$PIC" \
-DCMAKE_TOOLCHAIN_FILE="$CMAKE_TOOLCHAIN" \
-DCMAKE_C_FLAGS="$PREFIX_MAP_FLAGS" \
-DCMAKE_CXX_FLAGS="$PREFIX_MAP_FLAGS" \
-DCMAKE_ASM_FLAGS="$PREFIX_MAP_FLAGS" \
-DCMAKE_SYSROOT="$REPO_ROOT"/$libcxx_build_sysroot \
-DCMAKE_INSTALL_PREFIX="$REPO_ROOT"/$libcxx_output \
-DLIBCXX_ENABLE_THREADS:BOOL=ON \
Expand Down
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