Add --nobuild option to build script.

To enable skipping of actual builds and just invoking CMake. Used in
the context of clang-tidy.

build.sh

@@ -19,7 +19,7 @@ ARGS=$*
 REPODIR=$(cd $(dirname $0); pwd)
 
 VALIDTARGETS="clean libcuml cuml cpp-mgtests prims bench prims-bench cppdocs pydocs"
-VALIDFLAGS="-v -g -n --allgpuarch --singlegpu --nolibcumltest --nvtx --show_depr_warn --codecov --ccache -h --help "
+VALIDFLAGS="-v -g -n --allgpuarch --singlegpu --nolibcumltest --nvtx --show_depr_warn --codecov --ccache --nobuild -h --help "
 VALIDARGS="${VALIDTARGETS} ${VALIDFLAGS}"
 HELP="$0 [<target> ...] [<flag> ...]
  where <target> is:
@@ -46,6 +46,7 @@ HELP="$0 [<target> ...] [<flag> ...]
    --codecov         - Enable code coverage support by compiling with Cython linetracing
                        and profiling enabled (WARNING: Impacts performance)
    --ccache          - Use ccache to cache previous compilations
+   --nobuild         - Invoke CMake without actually building
    --nocloneraft     - CMake will clone RAFT even if it is in the environment, use this flag to disable that behavior
    --static-treelite - Force CMake to use the Treelite static libs, cloning and building them if necessary
 
@@ -135,6 +136,7 @@ LONG_ARGUMENT_LIST=(
     "ccache"
     "nolibcumltest"
     "nocloneraft"
+    "nobuild"
 )
 
 # Short arguments
@@ -262,7 +264,7 @@ if completeBuild || hasArg libcuml || hasArg prims || hasArg bench || hasArg pri
 fi
 
 # If `./build.sh cuml` is called, don't build C/C++ components
-if completeBuild || hasArg libcuml || hasArg prims || hasArg bench || hasArg cpp-mgtests; then
+if (! hasArg --nobuild) && (completeBuild || hasArg libcuml || hasArg prims || hasArg bench || hasArg cpp-mgtests); then
     cd ${LIBCUML_BUILD_DIR}
     if [ -n "${INSTALL_TARGET}" ]; then
       cmake --build ${LIBCUML_BUILD_DIR} -j${PARALLEL_LEVEL} ${build_args} --target ${INSTALL_TARGET} ${VERBOSE_FLAG}
@@ -271,14 +273,14 @@ if completeBuild || hasArg libcuml || hasArg prims || hasArg bench || hasArg cpp
     fi
 fi
 
-if hasArg cppdocs; then
+if (! hasArg --nobuild) && hasArg cppdocs; then
     cd ${LIBCUML_BUILD_DIR}
     cmake --build ${LIBCUML_BUILD_DIR} --target docs_cuml
 fi
 
 
 # Build and (optionally) install the cuml Python package
-if completeBuild || hasArg cuml || hasArg pydocs; then
+if (! hasArg --nobuild) && (completeBuild || hasArg cuml || hasArg pydocs); then
     # Append `-DFIND_CUML_CPP=ON` to CUML_EXTRA_CMAKE_ARGS unless a user specified the option.
     if [[ "${CUML_EXTRA_CMAKE_ARGS}" != *"DFIND_CUML_CPP"* ]]; then
         CUML_EXTRA_CMAKE_ARGS="${CUML_EXTRA_CMAKE_ARGS} -DFIND_CUML_CPP=ON"

ci/run_clang_tidy.sh

@@ -15,7 +15,7 @@ rapids-mamba-retry env create --force -f env.yaml -n clang_tidy
 # Temporarily allow unbound variables for conda activation.
 set +u && conda activate clang_tidy && set -u
 
-./build.sh libcuml
+./build.sh --nobuild libcuml
 
 rapids-logger "Run clang-tidy"