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Make the SDK build parallelism configurable #293

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f42ba4e
Make the SDK build parallelism configurable
artem-from-ua Aug 29, 2026
b458223
Add -j only when SDK_JOBS is explicitly set
artem-from-ua Sep 3, 2026
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14 changes: 12 additions & 2 deletions build/_bootstrap_sdk.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,14 @@ esac

mkdir -p "$OUT" "$STAMPS"

# Holds "-j N" only when SDK_JOBS is set, and stays empty otherwise, so an
# unset SDK_JOBS leaves build.sh invoked exactly as before. Any -j, including
# -j 1, turns off make(1) compatibility mode.
SDK_JOBS_FLAG=""
if [ -n "${SDK_JOBS:-}" ]; then
SDK_JOBS_FLAG="-j $SDK_JOBS"
fi

clean_magic_cache() {
magic_root="$SRC/external/bsd/file/dist/magic"
if [ -d "$magic_root" ]; then
Expand All @@ -44,10 +52,11 @@ run_tools() {
rm -f "$TOOLS_STAMP"
clean_magic_cache
cd "$SRC"
# shellcheck disable=SC2086
env HOST_CC="$HOST_CC" HOST_CXX="$HOST_CXX" \
HOST_CFLAGS="$HOST_CFLAGS" HOST_CXXFLAGS="$HOST_CXXFLAGS" \
HOST_CPPFLAGS="$HOST_CPPFLAGS" \
./build.sh -U -m "$BUILD_MACHINE" -a "$BUILD_MACHINE_ARCH" \
./build.sh -U $SDK_JOBS_FLAG -m "$BUILD_MACHINE" -a "$BUILD_MACHINE_ARCH" \
-V NO_PTHREADS="$NO_PTHREADS" \
-O "$OBJ" -T "$TOOLS" tools \
>"$TOOLS_LOG" 2>&1
Expand All @@ -64,10 +73,11 @@ run_distribution() {
rm -f "$DIST_STAMP"
clean_magic_cache
cd "$SRC"
# shellcheck disable=SC2086
env HOST_CC="$HOST_CC" HOST_CXX="$HOST_CXX" \
HOST_CFLAGS="$HOST_CFLAGS" HOST_CXXFLAGS="$HOST_CXXFLAGS" \
HOST_CPPFLAGS="$HOST_CPPFLAGS" \
./build.sh -U -m "$BUILD_MACHINE" -a "$BUILD_MACHINE_ARCH" \
./build.sh -U $SDK_JOBS_FLAG -m "$BUILD_MACHINE" -a "$BUILD_MACHINE_ARCH" \
-V NO_PTHREADS="$NO_PTHREADS" \
-O "$OBJ" -T "$TOOLS" distribution \
>"$DIST_LOG" 2>&1
Expand Down
7 changes: 6 additions & 1 deletion build/env.sh
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Expand Up @@ -52,6 +52,11 @@ HOST_CXXFLAGS="${HOST_CXXFLAGS:--O -fcommon -fgnu89-inline}"
HOST_CPPFLAGS="${HOST_CPPFLAGS:--D__GNUC_GNU_INLINE__ -D__STDC_WANT_LIB_EXT1__=1}"
NO_PTHREADS="${NO_PTHREADS:-1}"

# Unset by default: any -j, including -j 1, turns off make(1) compatibility
# mode, which changes how target commands are run. Leaving this empty keeps
# build.sh invoked exactly as before.
SDK_JOBS="${SDK_JOBS:-}"

SAMBA4_VERSION="${SAMBA4_VERSION:-4.8.12}"
SAMBA4_GIT_URL="${SAMBA4_GIT_URL:-https://github.com/samba-team/samba.git}"
SAMBA4_GIT_REF="${SAMBA4_GIT_REF:-samba-${SAMBA4_VERSION}}"
Expand Down Expand Up @@ -582,7 +587,7 @@ export NETBSD7_ROOT NETBSD7_SRC NETBSD7_OUT NETBSD7_DOWNLOAD_LOG NETBSD7_TOOLS_L
export BUILD_TARGET BUILD_ROOT BUILD_SRC BUILD_OUT BUILD_MACHINE BUILD_MACHINE_ARCH
export SDK_DOWNLOAD_WRAPPER SDK_BOOTSTRAP_WRAPPER
export SRC OUT OBJ TOOLS STAMPS TOOLS_STAMP DIST_STAMP MKCONF
export HOST_CC HOST_CXX HOST_CFLAGS HOST_CXXFLAGS HOST_CPPFLAGS NO_PTHREADS
export HOST_CC HOST_CXX HOST_CFLAGS HOST_CXXFLAGS HOST_CPPFLAGS NO_PTHREADS SDK_JOBS
export DOWNLOAD_LOG TOOLS_LOG DIST_LOG HELLO_LOG PROBE_DIR PROBE_SRC PROBE_BIN DIRPROBE_LOG
export MDNS_STAGE NBNS_STAGE MDNS_LOG NBNS_LOG MDNS_BIN_NAME NBNS_BIN_NAME CROSS_EXEC_REMOTE_DIR
export BUILD_EXPECT_OS_RELEASE BUILD_EXPECT_HOST_ALIAS BUILD_EXPECT_EABI BUILD_EXPECT_ENDIAN BUILD_EXPECT_TOOL_TRIPLE_GLOB
Expand Down
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