gmxBuildTreeInfo.cmake

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# Retrieves information about the nature of the build tree
#
# The following variables are defined:
#   SOURCE_IS_SOURCE_DISTRIBUTION  The source tree is from a source tarball.
#   SOURCE_IS_GIT_REPOSITORY       The source tree is a git repository.
# Note that both can be false if the tree has been extracted, e.g., as a
# tarball directly from git.
# Additionally, the following variable is defined:
#   BUILD_IS_INSOURCE              The build is happening in-source.

#####################################################################
# Basic nature of the source tree

set(SOURCE_IS_GIT_REPOSITORY OFF)
set(SOURCE_IS_SOURCE_DISTRIBUTION OFF)
if (EXISTS "${PROJECT_SOURCE_DIR}/.git")
    set(SOURCE_IS_GIT_REPOSITORY ON)
endif()
# This file is excluded from CPack source packages, but part of the repository,
# so it should get included everywhere else.
if (NOT EXISTS "${PROJECT_SOURCE_DIR}/admin/.isreposource")
    set(SOURCE_IS_SOURCE_DISTRIBUTION ON)
endif()
set(BUILD_IS_INSOURCE OFF)
if ("${PROJECT_SOURCE_DIR}" STREQUAL "${PROJECT_BINARY_DIR}")
    set(BUILD_IS_INSOURCE ON)
endif()

#####################################################################
# Location of other repositories (for development use only)

if (NOT DEFINED RELENG_PATH)
    if (IS_DIRECTORY "${PROJECT_SOURCE_DIR}/../releng")
        set(RELENG_PATH "${PROJECT_SOURCE_DIR}/../releng")
    endif()
endif()
set(RELENG_PATH "${RELENG_PATH}" CACHE PATH "Path to releng repository")
mark_as_advanced(RELENG_PATH)