CI (buildkite): ensure passing --output-sync when passing -j (#42511)

To be at feature-parity with old buildbots.

(cherry picked from commit 82f60b4)

.buildkite/pipelines/main/misc/doctest.yml

@@ -21,7 +21,7 @@ steps:
             - "/cache/repos:/cache/repos"
     commands: |
       echo "--- Build Julia from source"
-      make -j 6
+      make --output-sync -j 6
 
       echo "--- Print Julia version info"
       ./julia -e 'using InteractiveUtils; InteractiveUtils.versioninfo()'

.buildkite/pipelines/main/misc/embedding.yml

@@ -22,10 +22,10 @@ steps:
     commands: |
       prefix="/tmp/prefix"
       echo "+++ Build julia, deploy to $${prefix:?}"
-      make -j$${JULIA_CPU_THREADS:?} JULIA_PRECOMPILE=0 prefix=$${prefix:?} install
+      make --output-sync -j$${JULIA_CPU_THREADS:?} JULIA_PRECOMPILE=0 prefix=$${prefix:?} install
 
       embedding_output="/tmp/embedding-test"
       echo "+++ Run embedding tests, deploy to $${embedding_output:?}"
       mkdir -p "$${embedding_output:?}"
-      make -j$${JULIA_CPU_THREADS:?} -C test/embedding JULIA="$${prefix:?}/bin/julia" BIN="$${embedding_output:?}"
+      make --output-sync -j$${JULIA_CPU_THREADS:?} -C test/embedding JULIA="$${prefix:?}/bin/julia" BIN="$${embedding_output:?}"
     timeout_in_minutes: 60

.buildkite/pipelines/main/misc/llvmpasses.yml

@@ -19,10 +19,10 @@ steps:
             - "/cache/repos:/cache/repos"
     commands: |
       echo "--- Install in-tree LLVM dependencies"
-      make -j$${JULIA_CPU_THREADS:?} -C deps install-llvm install-clang install-llvm-tools install-libuv install-utf8proc install-unwind
+      make --output-sync -j$${JULIA_CPU_THREADS:?} -C deps install-llvm install-clang install-llvm-tools install-libuv install-utf8proc install-unwind
       echo "+++ run clangsa/analyzegc"
-      make -j$${JULIA_CPU_THREADS:?} -C test/clangsa
-      make -j$${JULIA_CPU_THREADS:?} -C src analyzegc
+      make --output-sync -j$${JULIA_CPU_THREADS:?} -C test/clangsa
+      make --output-sync -j$${JULIA_CPU_THREADS:?} -C src analyzegc
     timeout_in_minutes: 60
   - label: "llvmpasses"
     key: "llvmpasses"
@@ -40,9 +40,9 @@ steps:
             - "/cache/repos:/cache/repos"
     commands: |
       echo "--- make release"
-      make -j$${JULIA_CPU_THREADS:?} release JULIA_PRECOMPILE=0
+      make --output-sync -j$${JULIA_CPU_THREADS:?} release JULIA_PRECOMPILE=0
       echo "--- make src/install-analysis-deps"
-      make -j$${JULIA_CPU_THREADS:?} -C src install-analysis-deps
+      make --output-sync -j$${JULIA_CPU_THREADS:?} -C src install-analysis-deps
       echo "+++ make test/llvmpasses"
-      make -j$${JULIA_CPU_THREADS:?} -C test/llvmpasses
+      make --output-sync -j$${JULIA_CPU_THREADS:?} -C test/llvmpasses
     timeout_in_minutes: 60

.buildkite/pipelines/main/misc/whitespace.yml

@@ -21,4 +21,4 @@ steps:
       - github_commit_status:
           context: "whitespace"
     commands: |
-      make -j$${JULIA_CPU_THREADS:?} check-whitespace
+      make --output-sync -j$${JULIA_CPU_THREADS:?} check-whitespace

.buildkite/pipelines/main/platforms/package_linux.yml

@@ -35,7 +35,7 @@ steps:
 
       echo "--- Build Julia from source"
       rm -rf $${ARTIFACT_FILENAME:?}
-      make -j 8
+      make --output-sync -j 8
 
       echo "--- Make sure that the working directory is clean"
       if [ -z "$(git status --short)" ]; then echo "INFO: The working directory is clean."; else echo "ERROR: The working directory is dirty."; echo "Output of git status:"; git status; exit 1; fi
@@ -44,7 +44,7 @@ steps:
       ./julia -e 'using InteractiveUtils; InteractiveUtils.versioninfo()'
 
       echo "--- Create build artifacts"
-      make -j 8 binary-dist
+      make --output-sync -j 8 binary-dist
       ls -l $${JULIA_BINARYDIST:?}
       if [[ "$${JULIA_BINARYDIST:?}" != "$${ARTIFACT_FILENAME:?}" ]]; then
           mv $${JULIA_BINARYDIST:?} $${ARTIFACT_FILENAME:?}

.buildkite/pipelines/scheduled/coverage/coverage_linux64.yml

@@ -21,7 +21,7 @@ steps:
           gid: 1000
     commands: |
       echo "--- Build Julia from source"
-      make -j 6
+      make --output-sync -j 6
 
       echo "--- Print Julia version info"
       ./julia -e 'using InteractiveUtils; InteractiveUtils.versioninfo()'