ENH: First draft of add_external_project functionality. Tweaks, dashboard fixing, more tests and documentation certain to follow as it gets used by others...

1 files changed, 461 insertions, 0 deletions

diff --git a/Modules/AddExternalProject.cmake b/Modules/AddExternalProject.cmake
new file mode 100644
index 0000000..9e14bd2
--- /dev/null
+++ b/Modules/AddExternalProject.cmake
@@ -0,0 +1,461 @@
+# Requires CVS CMake for 'function' and '-E touch' and '--build'
+
+
+find_package(CVS)
+find_package(Subversion)
+
+
+function(get_external_project_directories base_dir_var build_dir_var downloads_dir_var install_dir_var sentinels_dir_var source_dir_var tmp_dir_var)
+  set(base "${CMAKE_BINARY_DIR}/CMakeExternals")
+  set(${base_dir_var} "${base}" PARENT_SCOPE)
+  set(${build_dir_var} "${base}/Build" PARENT_SCOPE)
+  set(${downloads_dir_var} "${base}/Downloads" PARENT_SCOPE)
+  set(${install_dir_var} "${base}/Install" PARENT_SCOPE)
+  set(${sentinels_dir_var} "${base}/Sentinels" PARENT_SCOPE)
+  set(${source_dir_var} "${base}/Source" PARENT_SCOPE)
+  set(${tmp_dir_var} "${base}/tmp" PARENT_SCOPE)
+endfunction(get_external_project_directories)
+
+
+function(get_configure_build_working_dir name working_dir_var)
+  get_external_project_directories(base_dir build_dir downloads_dir install_dir
+    sentinels_dir source_dir tmp_dir)
+
+  get_target_property(dir ${name} AEP_CONFIGURE_DIR)
+  if(dir)
+    if (IS_ABSOLUTE "${dir}")
+      set(working_dir "${dir}")
+    else()
+      set(working_dir "${source_dir}/${name}/${dir}")
+    endif()
+  else()
+    set(working_dir "${build_dir}/${name}")
+  endif()
+
+  set(${working_dir_var} "${working_dir}" PARENT_SCOPE)
+endfunction(get_configure_build_working_dir)
+
+
+function(add_external_project_download_command name)
+  set(added 0)
+  get_external_project_directories(base_dir build_dir downloads_dir install_dir
+    sentinels_dir source_dir tmp_dir)
+
+
+  if(NOT added)
+  get_target_property(cvs_repository ${name} AEP_CVS_REPOSITORY)
+  if(cvs_repository)
+    if(NOT CVS_EXECUTABLE)
+      message(FATAL_ERROR "error: could not find cvs for checkout of ${name}")
+    endif()
+
+    get_target_property(cvs_module ${name} AEP_CVS_MODULE)
+    if(NOT cvs_module)
+      message(FATAL_ERROR "error: no CVS_MODULE")
+    endif()
+
+    get_target_property(tag ${name} AEP_CVS_TAG)
+    set(cvs_tag)
+    if(tag)
+      set(cvs_tag ${tag})
+    endif()
+
+    set(args -d ${cvs_repository} co ${cvs_tag} -d ${name} ${cvs_module})
+    set(wd "${source_dir}")
+
+    set(repository ${cvs_repository})
+    set(module ${cvs_module})
+    set(tag ${cvs_tag})
+
+    configure_file(
+      "${CMAKE_ROOT}/Modules/RepositoryInfo.txt.in"
+      "${sentinels_dir}/${name}-cvsinfo.txt"
+      @ONLY
+    )
+
+    add_custom_command(
+      OUTPUT ${sentinels_dir}/${name}-download
+      COMMAND ${CVS_EXECUTABLE} ${args}
+      COMMAND ${CMAKE_COMMAND} -E touch ${sentinels_dir}/${name}-download
+      WORKING_DIRECTORY ${wd}
+      COMMENT "Performing download step (CVS checkout) for '${name}'"
+      DEPENDS "${sentinels_dir}/${name}-cvsinfo.txt"
+    )
+    set(added 1)
+  endif()
+  endif(NOT added)
+
+
+  if(NOT added)
+  get_target_property(svn_repository ${name} AEP_SVN_REPOSITORY)
+  if(svn_repository)
+    if(NOT Subversion_SVN_EXECUTABLE)
+      message(FATAL_ERROR "error: could not find svn for checkout of ${name}")
+    endif()
+
+    get_target_property(tag ${name} AEP_SVN_TAG)
+    set(svn_tag)
+    if(tag)
+      set(svn_tag ${tag})
+    endif()
+
+    set(args co ${svn_repository} ${svn_tag} ${name})
+    set(wd "${source_dir}")
+
+    set(repository ${svn_repository})
+    set(module)
+    set(tag ${svn_tag})
+
+    configure_file(
+      "${CMAKE_ROOT}/Modules/RepositoryInfo.txt.in"
+      "${sentinels_dir}/${name}-svninfo.txt"
+      @ONLY
+    )
+
+    add_custom_command(
+      OUTPUT ${sentinels_dir}/${name}-download
+      COMMAND ${Subversion_SVN_EXECUTABLE} ${args}
+      COMMAND ${CMAKE_COMMAND} -E touch ${sentinels_dir}/${name}-download
+      WORKING_DIRECTORY ${wd}
+      COMMENT "Performing download step (SVN checkout) for '${name}'"
+      DEPENDS "${sentinels_dir}/${name}-svninfo.txt"
+    )
+    set(added 1)
+  endif()
+  endif(NOT added)
+
+
+  if(NOT added)
+  get_target_property(dir ${name} AEP_DIR)
+  if(dir)
+    add_custom_command(
+      OUTPUT ${sentinels_dir}/${name}-download
+      COMMAND ${CMAKE_COMMAND} -E copy_directory ${dir} ${source_dir}/${name}
+      COMMAND ${CMAKE_COMMAND} -E touch ${sentinels_dir}/${name}-download
+      WORKING_DIRECTORY ${source_dir}
+      COMMENT "Performing download step (DIR copy) for '${name}'"
+      DEPENDS ${dir}
+    )
+    set(added 1)
+  endif()
+  endif(NOT added)
+
+
+  if(NOT added)
+  get_target_property(tar ${name} AEP_TAR)
+  if(tar)
+    add_custom_command(
+      OUTPUT ${sentinels_dir}/${name}-download
+      COMMAND ${CMAKE_COMMAND} -Dfilename=${tar} -Dtmp=${tmp_dir}/${name} -Ddirectory=${source_dir}/${name} -P ${CMAKE_ROOT}/Modules/UntarFile.cmake
+      COMMAND ${CMAKE_COMMAND} -E touch ${sentinels_dir}/${name}-download
+      WORKING_DIRECTORY ${source_dir}
+      COMMENT "Performing download step (TAR untar) for '${name}'"
+      DEPENDS ${tar}
+    )
+    set(added 1)
+  endif()
+  endif(NOT added)
+
+
+  if(NOT added)
+  get_target_property(tgz ${name} AEP_TGZ)
+  if(tgz)
+    add_custom_command(
+      OUTPUT ${sentinels_dir}/${name}-download
+      COMMAND ${CMAKE_COMMAND} -Dfilename=${tgz} -Dtmp=${tmp_dir}/${name} -Ddirectory=${source_dir}/${name} -P ${CMAKE_ROOT}/Modules/UntarFile.cmake
+      COMMAND ${CMAKE_COMMAND} -E touch ${sentinels_dir}/${name}-download
+      WORKING_DIRECTORY ${source_dir}
+      COMMENT "Performing download step (TGZ untar) for '${name}'"
+      DEPENDS ${tgz}
+    )
+    set(added 1)
+  endif()
+  endif(NOT added)
+
+
+  if(NOT added)
+  get_target_property(tgz_url ${name} AEP_TGZ_URL)
+  if(tgz_url)
+    add_custom_command(
+      OUTPUT ${sentinels_dir}/${name}-download
+      COMMAND ${CMAKE_COMMAND} -Dremote=${tgz_url} -Dlocal=${downloads_dir}/${name}.tgz -P ${CMAKE_ROOT}/Modules/DownloadFile.cmake
+      COMMAND ${CMAKE_COMMAND} -Dfilename=${downloads_dir}/${name} -Dtmp=${tmp_dir}/${name} -Ddirectory=${source_dir}/${name} -P ${CMAKE_ROOT}/Modules/UntarFile.cmake
+      COMMAND ${CMAKE_COMMAND} -E touch ${sentinels_dir}/${name}-download
+      WORKING_DIRECTORY ${source_dir}
+      COMMENT "Performing download step (TGZ_URL download and untar) for '${name}'"
+      DEPENDS ${downloads_dir}/${name}.tgz
+    )
+    set(added 1)
+  endif()
+  endif(NOT added)
+
+  if(NOT added)
+  get_target_property(tar_url ${name} AEP_TAR_URL)
+  if(tar_url)
+    add_custom_command(
+      OUTPUT ${sentinels_dir}/${name}-download
+      COMMAND ${CMAKE_COMMAND} -Dremote=${tar_url} -Dlocal=${downloads_dir}/${name}.tar -P ${CMAKE_ROOT}/Modules/DownloadFile.cmake
+      COMMAND ${CMAKE_COMMAND} -Dfilename=${downloads_dir}/${name} -Dtmp=${tmp_dir}/${name} -Ddirectory=${source_dir}/${name} -P ${CMAKE_ROOT}/Modules/UntarFile.cmake
+      COMMAND ${CMAKE_COMMAND} -E touch ${sentinels_dir}/${name}-download
+      WORKING_DIRECTORY ${source_dir}
+      COMMENT "Performing download step (TAR_URL download and untar) for '${name}'"
+      DEPENDS ${downloads_dir}/${name}.tar
+    )
+    set(added 1)
+  endif()
+  endif(NOT added)
+
+
+  if(NOT added)
+    message(SEND_ERROR "error: no download info for '${name}'")
+  endif(NOT added)
+endfunction(add_external_project_download_command)
+
+
+function(add_external_project_configure_command name)
+  get_external_project_directories(base_dir build_dir downloads_dir install_dir
+    sentinels_dir source_dir tmp_dir)
+  get_configure_build_working_dir(${name} working_dir)
+
+  # Create the working_dir for configure, build and install steps:
+  #
+  add_custom_command(
+    OUTPUT ${working_dir}
+    COMMAND ${CMAKE_COMMAND} -E make_directory ${working_dir}
+    DEPENDS ${sentinels_dir}/${name}-download
+    )
+
+  get_target_property(cmd ${name} AEP_CONFIGURE_COMMAND)
+  if(cmd STREQUAL "")
+    # Explicit empty string means no configure step for this project
+    add_custom_command(
+      OUTPUT ${sentinels_dir}/${name}-configure
+      COMMAND ${CMAKE_COMMAND} -E touch ${sentinels_dir}/${name}-configure
+      WORKING_DIRECTORY ${working_dir}
+      COMMENT "No configure step for '${name}'"
+      DEPENDS ${working_dir} ${sentinels_dir}/${name}-download
+      )
+  else()
+    if(NOT cmd)
+      set(cmd ${CMAKE_COMMAND})
+    endif()
+
+    set(args "")
+    get_target_property(configure_args ${name} AEP_CONFIGURE_ARGS)
+    if(configure_args)
+      set(args "${configure_args}")
+      separate_arguments(args)
+    endif()
+
+    add_custom_command(
+      OUTPUT ${sentinels_dir}/${name}-configure
+      COMMAND ${cmd} ${args}
+      COMMAND ${CMAKE_COMMAND} -E touch ${sentinels_dir}/${name}-configure
+      WORKING_DIRECTORY ${working_dir}
+      COMMENT "Performing configure step for '${name}'"
+      DEPENDS ${working_dir} ${sentinels_dir}/${name}-download
+      )
+  endif()
+endfunction(add_external_project_configure_command)
+
+
+function(add_external_project_build_command name)
+  get_external_project_directories(base_dir build_dir downloads_dir install_dir
+    sentinels_dir source_dir tmp_dir)
+  get_configure_build_working_dir(${name} working_dir)
+
+  get_target_property(cmd ${name} AEP_BUILD_COMMAND)
+  if(cmd STREQUAL "")
+    # Explicit empty string means no build step for this project
+    add_custom_command(
+      OUTPUT ${sentinels_dir}/${name}-build
+      COMMAND ${CMAKE_COMMAND} -E touch ${sentinels_dir}/${name}-build
+      WORKING_DIRECTORY ${working_dir}
+      COMMENT "No build step for '${name}'"
+      DEPENDS ${sentinels_dir}/${name}-configure
+      )
+  else()
+    if(NOT cmd)
+      set(cmd ${CMAKE_COMMAND})
+    endif()
+
+    get_target_property(args ${name} AEP_BUILD_ARGS)
+    if(NOT args)
+      set(args --build ${working_dir} --config ${CMAKE_CFG_INTDIR})
+    endif()
+
+    add_custom_command(
+      OUTPUT ${sentinels_dir}/${name}-build
+      COMMAND ${cmd} ${args}
+      COMMAND ${CMAKE_COMMAND} -E touch ${sentinels_dir}/${name}-build
+      WORKING_DIRECTORY ${working_dir}
+      COMMENT "Performing build step for '${name}'"
+      DEPENDS ${sentinels_dir}/${name}-configure
+      )
+  endif()
+endfunction(add_external_project_build_command)
+
+
+function(add_external_project_install_command name)
+  get_external_project_directories(base_dir build_dir downloads_dir install_dir
+    sentinels_dir source_dir tmp_dir)
+  get_configure_build_working_dir(${name} working_dir)
+
+  get_target_property(cmd ${name} AEP_INSTALL_COMMAND)
+  if(cmd STREQUAL "")
+    # Explicit empty string means no install step for this project
+    add_custom_command(
+      OUTPUT ${sentinels_dir}/${name}-install
+      COMMAND ${CMAKE_COMMAND} -E touch ${sentinels_dir}/${name}-install
+      WORKING_DIRECTORY ${working_dir}
+      COMMENT "No install step for '${name}'"
+      DEPENDS ${sentinels_dir}/${name}-build
+      )
+  else()
+    if(NOT cmd)
+      set(cmd ${CMAKE_COMMAND})
+    endif()
+
+    get_target_property(args ${name} AEP_INSTALL_ARGS)
+    if(NOT args)
+      set(args --build ${working_dir} --config ${CMAKE_CFG_INTDIR} --target install)
+    endif()
+
+    add_custom_command(
+      OUTPUT ${sentinels_dir}/${name}-install
+      COMMAND ${cmd} ${args}
+      COMMAND ${CMAKE_COMMAND} -E touch ${sentinels_dir}/${name}-install
+      WORKING_DIRECTORY ${working_dir}
+      COMMENT "Performing install step for '${name}'"
+      DEPENDS ${sentinels_dir}/${name}-build
+      )
+  endif()
+endfunction(add_external_project_install_command)
+
+
+function(add_CMakeExternals_target)
+  if(NOT TARGET CMakeExternals)
+    get_external_project_directories(base_dir build_dir downloads_dir install_dir
+      sentinels_dir source_dir tmp_dir)
+
+    add_custom_command(
+      OUTPUT ${tmp_dir}
+      COMMAND ${CMAKE_COMMAND} -E make_directory ${build_dir}
+      COMMAND ${CMAKE_COMMAND} -E make_directory ${downloads_dir}
+      COMMAND ${CMAKE_COMMAND} -E make_directory ${install_dir}
+      COMMAND ${CMAKE_COMMAND} -E make_directory ${sentinels_dir}
+      COMMAND ${CMAKE_COMMAND} -E make_directory ${source_dir}
+      COMMAND ${CMAKE_COMMAND} -E make_directory ${tmp_dir}
+    )
+
+    add_custom_target(CMakeExternals ALL
+      DEPENDS ${tmp_dir}
+    )
+  endif()
+endfunction(add_CMakeExternals_target)
+
+
+function(add_external_project name)
+  get_external_project_directories(base_dir build_dir downloads_dir install_dir
+    sentinels_dir source_dir tmp_dir)
+
+  add_CMakeExternals_target()
+
+  add_custom_target(${name} ALL
+    DEPENDS ${sentinels_dir}/${name}-install
+  )
+  set_target_properties(${name} PROPERTIES AEP_IS_EXTERNAL_PROJECT 1)
+
+  # Loop over ARGN by 2's extracting key/value pairs from
+  # the non-explicit arguments to the function:
+  #
+  list(LENGTH ARGN n)
+  set(i 0)
+  while(i LESS n)
+    math(EXPR j ${i}+1)
+    list(GET ARGN ${i} key)
+    list(GET ARGN ${j} value)
+    #message(STATUS "  ${key}='${value}'")
+
+    if(key STREQUAL "BUILD_ARGS")
+      set_target_properties(${name} PROPERTIES AEP_BUILD_ARGS "${value}")
+    endif()
+
+    if(key STREQUAL "BUILD_COMMAND")
+      set_target_properties(${name} PROPERTIES AEP_BUILD_COMMAND "${value}")
+    endif()
+
+    if(key STREQUAL "CONFIGURE_ARGS")
+      set_target_properties(${name} PROPERTIES AEP_CONFIGURE_ARGS "${value}")
+    endif()
+
+    if(key STREQUAL "CONFIGURE_COMMAND")
+      set_target_properties(${name} PROPERTIES AEP_CONFIGURE_COMMAND "${value}")
+    endif()
+
+    if(key STREQUAL "CONFIGURE_DIR")
+      set_target_properties(${name} PROPERTIES AEP_CONFIGURE_DIR "${value}")
+    endif()
+
+    if(key STREQUAL "CVS_REPOSITORY")
+      set_target_properties(${name} PROPERTIES AEP_CVS_REPOSITORY "${value}")
+    endif()
+
+    if(key STREQUAL "CVS_MODULE")
+      set_target_properties(${name} PROPERTIES AEP_CVS_MODULE "${value}")
+    endif()
+
+    if(key STREQUAL "CVS_TAG")
+      set_target_properties(${name} PROPERTIES AEP_CVS_TAG "${value}")
+    endif()
+
+    if(key STREQUAL "DEPENDS")
+      add_dependencies(${name} ${value})
+    endif()
+
+    if(key STREQUAL "DIR")
+      set_target_properties(${name} PROPERTIES AEP_DIR "${value}")
+    endif()
+
+    if(key STREQUAL "INSTALL_ARGS")
+      set_target_properties(${name} PROPERTIES AEP_INSTALL_ARGS "${value}")
+    endif()
+
+    if(key STREQUAL "INSTALL_COMMAND")
+      set_target_properties(${name} PROPERTIES AEP_INSTALL_COMMAND "${value}")
+    endif()
+
+    if(key STREQUAL "SVN_REPOSITORY")
+      set_target_properties(${name} PROPERTIES AEP_SVN_REPOSITORY "${value}")
+    endif()
+
+    if(key STREQUAL "SVN_TAG")
+      set_target_properties(${name} PROPERTIES AEP_SVN_TAG "${value}")
+    endif()
+
+    if(key STREQUAL "TAR")
+      set_target_properties(${name} PROPERTIES AEP_TAR "${value}")
+    endif()
+
+    if(key STREQUAL "TAR_URL")
+      set_target_properties(${name} PROPERTIES AEP_TAR_URL "${value}")
+    endif()
+
+    if(key STREQUAL "TGZ")
+      set_target_properties(${name} PROPERTIES AEP_TGZ "${value}")
+    endif()
+
+    if(key STREQUAL "TGZ_URL")
+      set_target_properties(${name} PROPERTIES AEP_TGZ_URL "${value}")
+    endif()
+
+    math(EXPR i ${i}+2)
+  endwhile()
+
+  add_external_project_download_command(${name})
+  add_external_project_configure_command(${name})
+  add_external_project_build_command(${name})
+  add_external_project_install_command(${name})
+
+  add_dependencies(${name} CMakeExternals)
+endfunction(add_external_project)