FindOpenACC

Finds and detects the OpenACC support in a compiler:

find_package(OpenACC [<version>] [...])

If the compiler supports OpenACC, the flags required to compile with OpenACC support are returned in variables for the different languages. Currently, only NVHPC, PGI, GNU and Cray compilers are supported.

Imported Targets

This module provides the following Imported Targets:

OpenACC::OpenACC_<lang>

Added in version 3.16.

Target encapsulating the usage requirements for using OpenACC from <lang>. This target is available only if OpenACC support is found. <lang> is one of C, CXX, or Fortran.

Result Variables

This module defines the following variables:

OpenACC_FOUND

Added in version 3.25.

Boolean indicating that OpenACC flags for at least one language were found.

This module will set the following variables per language in the project, where <lang> is one of C, CXX, or Fortran:

OpenACC_<lang>_FOUND

Boolean indicating whether OpenACC support for language <lang> was detected.

OpenACC_<lang>_FLAGS

OpenACC compiler flags for <lang>, separated by spaces.

OpenACC_<lang>_OPTIONS

Added in version 3.16.

OpenACC compiler flags for <lang>, as a list. Suitable for usage with target_compile_options or target_link_options.

The module will also try to provide the OpenACC version variables:

OpenACC_<lang>_SPEC_DATE

Date of the OpenACC specification implemented by the <lang> compiler.

OpenACC_<lang>_VERSION_MAJOR

Major version of OpenACC implemented by the <lang> compiler.

OpenACC_<lang>_VERSION_MINOR

Minor version of OpenACC implemented by the <lang> compiler.

OpenACC_<lang>_VERSION

OpenACC version implemented by the <lang> compiler.

The specification date is formatted as given in the OpenACC standard: yyyymm where yyyy and mm represents the year and month of the OpenACC specification implemented by the <lang> compiler.

Input Variables

This module accepts the following variables:

OpenACC_ACCEL_TARGET=<target>

If set, the correct target accelerator flag set to the <target> will be returned with the OpenACC_<lang>_FLAGS variable.

Examples

Finding OpenACC support and linking the imported target to a project target:

find_package(OpenACC)
target_link_libraries(example PRIVATE OpenACC::OpenACC_C)