CMakeAddFortranSubdirectory: Allow full paths to directories

Fix the implementation to allow full paths with spaces.  Change the
interpretation of relative paths to be with respect to the current binary
directory.  This matches the convention used in ExternalProject.  Test
both full and relative paths in the VSGNUFortran test.

Modules/CMakeAddFortranSubdirectory.cmake

@@ -13,14 +13,17 @@
 # cmake_add_fortran_subdirectory(
 #   <subdir>                 # name of subdirectory
 #    PROJECT <project_name>  # project name in sbudir toplevel CMakeLists.txt
-#  ARCHIVE_DIR <dir>         # .lib location relative to root binary tree (lib)
-#  RUNTIME_DIR <dir>         # .dll location relative to root binary tree (bin)
+#  ARCHIVE_DIR <dir>         # dir where project places .lib files
+#  RUNTIME_DIR <dir>         # dir where project places .dll files
 #  LIBRARIES lib2 lib2    # names of libraries created and exported
 #  LINK_LIBRARIES            # link interface libraries for LIBRARIES
 #   LINK_LIBS <lib1>  <dep1> <dep2> ... <depN>
 #   LINK_LIBS <lib2> <dep1> <dep2> ... <depN>
 #  CMAKE_COMMAND_LINE        # extra command line flags to pass to cmake
 #   )
+# Relative paths in ARCHIVE_DIR and RUNTIME_DIR are interpreted with respect
+# to the build directory corresponding to the source directory in which the
+# function is invoked.
 #
 
 #=============================================================================
@@ -102,6 +105,12 @@ function(cmake_add_fortran_subdirectory subdir)
   set(libraries ${ARGS_LIBRARIES})
   # use the same directory that add_subdirectory would have used
   set(build_dir "${CMAKE_CURRENT_BINARY_DIR}/${subdir}")
+  foreach(dir_var library_dir binary_dir)
+    if(NOT IS_ABSOLUTE "${${dir_var}}")
+      get_filename_component(${dir_var}
+        "${CMAKE_CURRENT_BINARY_DIR}/${${dir_var}}" ABSOLUTE)
+    endif()
+  endforeach()
   # create build and configure wrapper scripts
   _setup_mingw_config_and_build(${source_dir})
   # create the external project
@@ -128,10 +137,8 @@ function(cmake_add_fortran_subdirectory subdir)
     add_library(${lib} SHARED IMPORTED)
     set_property(TARGET ${lib} APPEND PROPERTY IMPORTED_CONFIGURATIONS NOCONFIG)
     set_target_properties(${lib} PROPERTIES
-      IMPORTED_IMPLIB_NOCONFIG
-      "${build_dir}/${library_dir}/lib${lib}.lib"
-      IMPORTED_LOCATION_NOCONFIG
-      "${build_dir}/${binary_dir}/lib${lib}.dll"
+      IMPORTED_IMPLIB_NOCONFIG   "${library_dir}/lib${lib}.lib"
+      IMPORTED_LOCATION_NOCONFIG "${binary_dir}/lib${lib}.dll"
       )
     add_dependencies(${lib} ${project_name}_build)
   endforeach()

Modules/CMakeAddFortranSubdirectory/config_mingw.cmake.in

@@ -1,8 +1,9 @@
 set(ENV{PATH} "@MINGW_PATH@\;$ENV{PATH}")
+set(CMAKE_COMMAND_LINE "@ARGS_CMAKE_COMMAND_LINE@")
 execute_process(
   COMMAND "@CMAKE_COMMAND@" "-GMinGW Makefiles"
   -DCMAKE_Fortran_COMPILER:PATH=@MINGW_GFORTRAN@
   -DBUILD_SHARED_LIBS=ON
   -DCMAKE_GNUtoMS=ON
-  @ARGS_CMAKE_COMMAND_LINE@
+  ${CMAKE_COMMAND_LINE}
   "@source_dir@")

Tests/VSGNUFortran/CMakeLists.txt

@@ -1,5 +1,10 @@
 cmake_minimum_required(VERSION 2.8)
 project(VSGNUFortran)
+
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/bin")
+set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib")
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib")
+
 # force the executable to be put out of Debug/Release dir
 # because gmake build of fortran will not be in a config
 # directory, and for easier testing we want the exe and .dll
@@ -7,14 +12,9 @@ project(VSGNUFortran)
 if(CMAKE_CONFIGURATION_TYPES)
   foreach(config ${CMAKE_CONFIGURATION_TYPES})
     string(TOUPPER "${config}" config)
-    set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_${config}
-      "${PROJECT_BINARY_DIR}/bin")
     set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_${config}
-      "${PROJECT_BINARY_DIR}/bin")
+      ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
   endforeach()
-else()
-  set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin)
-  set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin)
 endif()
 
 include(CMakeAddFortranSubdirectory)
@@ -22,11 +22,13 @@ include(CMakeAddFortranSubdirectory)
 # the subdir is fortran, the project is FortranHello
 cmake_add_fortran_subdirectory(fortran
   PROJECT FortranHello  # project name in toplevel CMakeLists.txt
-  ARCHIVE_DIR ../bin # .lib location relative to root binary tree
-  RUNTIME_DIR ../bin # .dll location relative to root binary tree
+  ARCHIVE_DIR ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}
+  RUNTIME_DIR bin # ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}
   LIBRARIES hello world # target libraries created
-  CMAKE_COMMAND_LINE -DEXECUTABLE_OUTPUT_PATH=../bin
-                     -DLIBRARY_OUTPUT_PATH=../bin
+  CMAKE_COMMAND_LINE
+    -DCMAKE_RUNTIME_OUTPUT_DIRECTORY=${CMAKE_RUNTIME_OUTPUT_DIRECTORY}
+    -DCMAKE_ARCHIVE_OUTPUT_DIRECTORY=${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}
+    -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=${CMAKE_LIBRARY_OUTPUT_DIRECTORY}
   LINK_LIBRARIES  # link interface libraries
    LINK_LIBS hello world  # hello needs world to link
    )