v0.7.1

[Version 0.7.1] - Release date 2025-09-04

Changed

• Updated GoogleTest to 1.16.0
• Improved CMake information output for CUDA builds

v0.7.0

Added

• Added WORKING_DIRECTORY option to blt_add_test and blt_add_benchmark.
• Added BLT_CXX_FILE_EXTS variable (split out of BLT_C_FILE_EXTS) for use in modified blt_split_source_list_by_language macro.

Changed

• Modified blt_convert_to_system_includes to handle multiple targets and recursively update includes for dependencies.
• Modified blt_split_source_list_by_language to accept a CXX_LIST argument for splitting out C and CXX sources. If not specified, the C_LIST will contain both C and C++ sources.
• HIP support now uses enable_language(HIP), and specifying a HIP compiler must use the variable CMAKE_HIP_COMPILER.
• Updated GoogleBenchmark to 1.9.1

Fixed

• Removed GoogleTest, GoogleMock, and GoogleBenchmarks calling CMake's GNUInstallDirs
  which was causing non-deterministic install variables depending on your combination of
  static/shared libraries and if any of the previously mentioned TPLs were enabled.
• Enable C language support and emit a warning when GoogleTest or GoogleMock are enabled but
  not the C language.
• Guard HIP C smoketest against projects that don't enable C as a language in their projects.
• Changes benchmark custom target run_benchmarks to exclusively run benchmarks (not other general tests).
• Fix HIP smoketests to fail on HIP errors.
• Add -Wno-tautological-compare to GoogleTest/Mock/Benchmark for IntelLLVM compilers to silence
  warning.

v0.6.2

Added

• Added output for CMake's implicitly added link libraries and directories.

Changed

• OpenMP target now uses a generator expression for Fortran flags instead of replacing flags in
  Fortran targets created with BLT macros.
• Remove setting CMP0076 to OLD which left relative paths in target_sources() instead of altering
  them to absolute paths.
• Header-only libraries headers now show up under their own target in IDE project views instead of
  under downstream targets. This only works in CMake >= 3.19, otherwise they will not show up at all.
• Raised version for base CMake version supported by BLT to 3.15 to support ALIAS targets across BLT.

v0.6.1

Fixed

• Turned off GoogleTest finding Python

v0.6.0

Added

• Added support for C++23. Note: XL and PGI do not support C++23.
• Adds a clang_tidy_style CMake target to allow clang-tidy to fix errors in-place.
  This requires a CLANGAPPLYREPLACEMENTS_EXECUTABLE CMake variable to point to
  the clang-apply-replacements executable in addition to the CLANGTIDY_EXECUTABLE.
  Also adds a corresponding ENABLE_CLANGAPPLYREPLACEMENTS CMake option.
  Note that the clang_tidy_style target is not added to the style target and must be run separately.
• Added the blt_install_tpl_setups macro, which installs files to setup and create
  targets for the third-party libraries OpenMP, MPI, CUDA, and HIP. This macro is meant to
  replace blt_export_tpl_targets as the preferred way to setup third-party libraries with BLT.
• Added blt::`` namespaced aliases for BLT targets, cuda, cuda_runtime, mpi, and openmp. These targets still exist but but will be deprecated in a future release. It is recommended that you move to the new alias names, blt::cuda, blt::cuda_runtime, blt::mpi, and blt::openmp`

Changed

• SetupHIP now searches for user-defined or environment variables before CMake paths to find the ROCM_PATH.

Fixed

• Fixed infinite loop in blt_find_target_dependencies
• blt_check_code_compiles now works with alias targets

v0.5.3

[Version 0.5.3] - Release date 2023-06-05

Changed

• Updated Googletest to main from 04/13/2023.
  Commit: 12a5852e451baabc79c63a86c634912c563d57bc.
  Note: this version of Googletest requires C++14, and PGI is not supported. If you are using PGI, set ENABLE_GTEST OFF.
• Updated GoogleBenchmark to 1.8

Added

• Added blt_print_variables macro to print variables in current scope, with regex filtering on variable names and values
• Added DEPENDS_ON optional parameter to blt_check_code_compiles macro to allow for checking if a feature is available in a third-party imported target.
• Added CONFIGURATIONS and OMP_NUM_THREADS options to blt_add_benchmark

Fixed

• Guard HIP compiler flag --rocm-path=/path/to/rocm against Crayftn compiler earlier than 15.0.0.
• Fix doubling of INTERFACE_INCLUDE_DIRECTORIES in blt_patch_target(... TREAT_INCLUDES_AS_SYSTEM true).

Removed

• Removed tracking all sources in a project via ${PROJECT_NAME}_ALL_SOURCES.

v0.5.2

Added

• Added blt_convert_to_system_includes macro to convert existing interface includes to system interface includes.
• blt_check_code_compiles which compiles a C++ code snippet and returns the result.
• Added variable BLT_CMAKE_IMPLICIT_LINK_LIBRARIES_EXCLUDE for filtering
  link libraries implicitly added by CMake. See the following example host-config:
  host-configs/llnl/blueos_3_ppc64le_ib_p9/clang@upstream_nvcc_xlf.cmake

Changed

• Added three extra options to blt_print_target_properties macro to print properties of
  target's children as well as limit the properties printed with regular expressions:
  • CHILDREN (true/ false) whether or not you want to print the target's children's properties as well (recursively)
  • PROPERTY_NAME_REGEX (regular expression string) reduce which properties to print by name
  • PROPERTY_VALUE_REGEX (regular expression string) reduce which properties to print by value

v0.5.1

Added

• Added support for C++20. Note: XL does not support C++20.
  While PGI has C++20 support, it is currently disabled (A BLT fatal error will occur).
• BLT_CXX_STD now sets CMAKE_HIP_STANDARD, in CMake 3.21+, similar to CMAKE_CUDA_STANDARD.

Fixed

• Removed hard-coded -std=c++11 from various places related to CUDA flags. This now honors
  CMAKE_CUDA_STANDARD if set otherwise falls back on BLT_CXX_STD or CMAKE_CXX_STANDARD.
• Removed extra HIP offload flags that were being added as generator expressions as opposed to simple
  flags.

Removed

• Removed support for deprecated HCC.

v0.5.0

Added

• Added support for IntelLLVM compiler family to blt_append_custom_compiler_flag
• Added support for hip targets configured with cmake 3.21 native hip support
• Added blt_export_tpl_targets macro to add BLT-provided third-party library
  targets to an export set.

Changed

• BLT_C_FILE_EXTS updated to include .cuh
• Fold BLT_CLANG_HIP_ARCH into the CMAKE_HIP_ARCHITECTURES variable
• When using ENABLE_ALL_WARNINGS, append the flag to the beginning of CMAKE_{C,CXX}_FLAGS instead
  of the end
• HIP support now uses the hip-config.cmake file provided by ROCM. This
  modification requires a change to the BLT-provided HIP target names, and they
  are now available under the blt prefix: blt::hip and blt::hip_runtime.

Fixed

• Source code filename extension filtering now uses regular expressions to allow
  for more user customization and to improve handling of file names with multiple
  periods, e.g. 1d.cube.order2.c is considered a .c file.

v0.4.1

[Version 0.4.1] - Release date 2021-07-20

Added

• Added compilation of HIP with clang using ENABLE_CLANG_HIP and BLT_CLANG_HIP_ARCH

Changed

• XL: Use compiler flag -std=c++14 instead of -std=c++1y when BLT_CXX_STD is set to c++14

Fixed

• Simpified the clang-format version regex that was causing hangs on some version strings.