Attempt making the libc++ bots less verbose and more understandable

libcxx/include/CMakeLists.txt

@@ -1683,8 +1683,7 @@ foreach(f ${files})
   set(dst "${LIBCXX_GENERATED_INCLUDE_DIR}/${f}")
   add_custom_command(OUTPUT ${dst}
     DEPENDS ${src}
-    COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst}
-    COMMENT "Copying CXX header ${f}")
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst})
   list(APPEND _all_includes "${dst}")
 endforeach()
 

libcxx/utils/ci/run-buildbot

@@ -48,6 +48,8 @@ if [[ $# == 0 ]]; then
    exit 0
 fi
 
+VERBOSE_FLAG=''
+
 while [[ $# -gt 0 ]]; do
     case ${1} in
         -h|--help)
@@ -62,6 +64,12 @@ while [[ $# -gt 0 ]]; do
             BUILD_DIR="${2}"
             shift; shift
             ;;
+        --verbose)
+            # If the user passes --verbose, we enable verbose output for
+            # Ninja builds.
+            VERBOSE_FLAG='-v'
+            shift
+            ;;
         *)
             BUILDER="${1}"
             shift
@@ -168,25 +176,25 @@ function generate-cmake-android() {
 
 function check-runtimes() {
     step "Building libc++ test dependencies"
-    ${NINJA} -vC "${BUILD_DIR}" cxx-test-depends
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" cxx-test-depends
 
     step "Running the libc++ tests"
-    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" check-cxx
 
     step "Running the libc++abi tests"
-    ${NINJA} -vC "${BUILD_DIR}" check-cxxabi
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" check-cxxabi
 
     step "Running the libunwind tests"
-    ${NINJA} -vC "${BUILD_DIR}" check-unwind
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" check-unwind
 }
 
 # TODO: The goal is to test this against all configurations. We should also move
 #       this to the Lit test suite instead of being a separate CMake target.
 function check-abi-list() {
     step "Running the libc++ ABI list test"
-    ${NINJA} -vC "${BUILD_DIR}" check-cxx-abilist || (
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" check-cxx-abilist || (
         error "Generating the libc++ ABI list after failed check"
-        ${NINJA} -vC "${BUILD_DIR}" generate-cxx-abilist
+        ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" generate-cxx-abilist
         false
     )
 }
@@ -233,7 +241,7 @@ function test-armv7m-picolibc() {
         "${@}"
 
     step "Installing compiler-rt"
-    ${NINJA} -vC "${BUILD_DIR}/compiler-rt" install
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}/compiler-rt" install
     # Move compiler-rt libs into the same directory as all the picolib objects.
     mv "${INSTALL_DIR}/lib/armv7m-unknown-none-eabi"/* "${INSTALL_DIR}/lib"
 
@@ -256,7 +264,7 @@ check-generated-output)
     # Reject patches that forgot to re-run the generator scripts.
     step "Making sure the generator scripts were run"
     set +x # Printing all the commands below just creates extremely confusing output
-    ${NINJA} -vC "${BUILD_DIR}" libcxx-generate-files
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" libcxx-generate-files
     git diff | tee ${BUILD_DIR}/generated_output.patch
     git ls-files -o --exclude-standard | tee ${BUILD_DIR}/generated_output.status
     ! grep -q '^--- a' ${BUILD_DIR}/generated_output.patch || false
@@ -400,13 +408,13 @@ bootstrapping-build)
           -DLLVM_LIT_ARGS="-sv --xunit-xml-output test-results.xml --timeout=1500 --time-tests"
 
     step "Running the libc++ and libc++abi tests"
-    ${NINJA} -vC "${BUILD_DIR}" check-runtimes
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" check-runtimes
 
     step "Installing libc++ and libc++abi to a fake location"
-    ${NINJA} -vC "${BUILD_DIR}" install-runtimes
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" install-runtimes
 
     step "Running the LLDB libc++ data formatter tests"
-    ${NINJA} -vC "${BUILD_DIR}" lldb-api-test-deps
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" lldb-api-test-deps
     ${BUILD_DIR}/bin/llvm-lit -sv --param dotest-args='--category libc++' "${MONOREPO_ROOT}/lldb/test/API"
 
     ccache -s
@@ -552,7 +560,7 @@ apple-configuration)
 
     step "Running tests against Apple-configured libc++"
     # TODO: It would be better to run the tests against the fake-installed version of libc++ instead
-    xcrun --sdk macosx ninja -vC "${BUILD_DIR}/${arch}" check-cxx check-cxxabi check-cxx-abilist
+    xcrun --sdk macosx ninja ${VERBOSE_FLAG} -C "${BUILD_DIR}/${arch}" check-cxx check-cxxabi check-cxx-abilist
 ;;
 apple-system|apple-system-hardened)
     clean
@@ -595,13 +603,13 @@ apple-system|apple-system-hardened)
         -DCMAKE_INSTALL_NAME_DIR="/usr/lib/system"
 
     step "Running the libc++ tests"
-    ${NINJA} -vC "${BUILD_DIR}/cxx" check-cxx
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}/cxx" check-cxx
 
     step "Running the libc++abi tests"
-    ${NINJA} -vC "${BUILD_DIR}/cxx" check-cxxabi
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}/cxx" check-cxxabi
 
     step "Running the libunwind tests"
-    ${NINJA} -vC "${BUILD_DIR}/unwind" check-unwind
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}/unwind" check-unwind
 ;;
 aarch64)
     clean
@@ -659,13 +667,13 @@ clang-cl-dll)
     # setting when cmake and the test driver does the right thing automatically.
     generate-cmake-libcxx-win -DLIBCXX_TEST_PARAMS="enable_experimental=False"
     step "Running the libc++ tests"
-    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" check-cxx
 ;;
 clang-cl-static)
     clean
     generate-cmake-libcxx-win -DLIBCXX_ENABLE_SHARED=OFF
     step "Running the libc++ tests"
-    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" check-cxx
 ;;
 clang-cl-no-vcruntime)
     clean
@@ -676,14 +684,14 @@ clang-cl-no-vcruntime)
     generate-cmake-libcxx-win -DLIBCXX_TEST_PARAMS="enable_experimental=False" \
                               -DLIBCXX_TEST_CONFIG="llvm-libc++-shared-no-vcruntime-clangcl.cfg.in"
     step "Running the libc++ tests"
-    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" check-cxx
 ;;
 clang-cl-debug)
     clean
     generate-cmake-libcxx-win -DLIBCXX_TEST_PARAMS="enable_experimental=False" \
                               -DCMAKE_BUILD_TYPE=Debug
     step "Running the libc++ tests"
-    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" check-cxx
 ;;
 clang-cl-static-crt)
     clean
@@ -692,7 +700,7 @@ clang-cl-static-crt)
     generate-cmake-libcxx-win -DLIBCXX_ENABLE_SHARED=OFF \
                               -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded
     step "Running the libc++ tests"
-    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" check-cxx
 ;;
 mingw-dll)
     clean
@@ -738,7 +746,7 @@ mingw-incomplete-sysroot)
     # Only test that building succeeds; there's not much extra value in running
     # the tests here, as it would be equivalent to the mingw-dll config above.
     step "Building the runtimes"
-    ${NINJA} -vC "${BUILD_DIR}"
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}"
 ;;
 aix)
     clean
@@ -775,7 +783,7 @@ android-ndk-*)
                            -DLIBCXX_TEST_PARAMS="${PARAMS}" \
                            -DLIBCXXABI_TEST_PARAMS="${PARAMS}"
     check-abi-list
-    ${NINJA} -vC "${BUILD_DIR}" install-cxx install-cxxabi
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" install-cxx install-cxxabi
 
     # Start the emulator and make sure we can connect to the adb server running
     # inside of it.
@@ -788,9 +796,9 @@ android-ndk-*)
     adb shell mkdir -p /data/local/tmp/adb_run
     adb push "${BUILD_DIR}/lib/libc++_shared.so" /data/local/tmp/libc++/libc++_shared.so
     step "Running the libc++ tests"
-    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" check-cxx
     step "Running the libc++abi tests"
-    ${NINJA} -vC "${BUILD_DIR}" check-cxxabi
+    ${NINJA} ${VERBOSE_FLAG} -C "${BUILD_DIR}" check-cxxabi
 ;;
 #################################################################
 # Insert vendor-specific internal configurations below.