cmake: FindJulia.cmake

cmake/FindJulia.cmake

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+# Copyright 2010-2024 Google LLC
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+#[=======================================================================[.rst:
+FindJulia
+---------
+
+This module determines the Julia interpreter of the system.
+
+IMPORTED Targets
+^^^^^^^^^^^^^^^^
+
+This module defines :prop_tgt:`IMPORTED` target ``Julia::Interpreter``, if
+Julia has been found.
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This module defines the following variables:
+
+::
+
+Julia_FOUND          - True if Julia found.
+Julia_BIN            - The path to the Julia executable.
+Julia_VERSION        - The version of the Julia executable if found.
+
+Hints
+^^^^^
+
+A user may set ``JULIA_BINDIR`` to a folder containing the Julia binary
+to tell this module where to look.
+#]=======================================================================]
+
+include(FindPackageHandleStandardArgs)
+
+if(DEFINED ENV{JULIA_BINDIR})
+  message(STATUS "JULIA_BINDIR: $ENV{JULIA_BINDIR}")
+endif()
+
+set(Julia_FOUND FALSE)
+
+if(DEFINED ENV{JULIA_BINDIR})
+  find_program(Julia_BIN julia PATHS $ENV{JULIA_BINDIR} DOC "Julia executable")
+else()
+  find_program(Julia_BIN julia DOC "Julia executable")
+endif()
+message(STATUS "Julia_BIN: ${Julia_BIN}")
+
+if(Julia_BIN)
+  execute_process(
+    COMMAND "${Julia_BIN}" --startup-file=no --version
+    OUTPUT_VARIABLE Julia_VERSION
+  )
+  message(STATUS "Julia_VERSION: ${Julia_VERSION}")
+  set(Julia_FOUND TRUE)
+endif()
+