package/cmake: make ctest a target package too

Useful for packages shipped with a testsuite which makes use of ctest

Since ctest is just a tool provided by the cmake sources, this change
introduces a hidden BR2_PACKAGE_CMAKE symbol which is automatically
selected by the BR2_PACKAGE_CMAKE_CTEST one.
This is like this mostly for consistency (cmake is the actual package,
not ctest).

CMake is a particular package:
* CMake can be built using the generic infrastructure or the cmake one.
  Since Buildroot has no requirement regarding the host system cmake
  program presence, it uses the generic infrastructure to build the
  host-cmake package, then the (target-)cmake package can be built
  using the cmake infrastructure;
* CMake bundles its dependencies within its sources. This is the reason
  why the host-cmake package only has host-pkgconf as (runtime)
  dependency, whereas the (target-)cmake package has a lot of
  dependencies, using only the system-wide libraries instead of
  rebuilding and staitcally linking with the ones bundles into the CMake
  sources.

[Thomas:
 - add missing C++ dependency.
 - add missing multiple 'select' in Config.in
 - add missing wchar dependency, inherited from selecting libarchive.]

Signed-off-by: Davide Viti <zinosat@tiscali.it>
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/Config.in

@@ -105,6 +105,7 @@ menu "Development tools"
 	source "package/binutils/Config.in"
 	source "package/bsdiff/Config.in"
 	source "package/bustle/Config.in"
+	source "package/cmake/Config.in"
 	source "package/cppunit/Config.in"
 	source "package/cvs/Config.in"
 if BR2_PACKAGE_BUSYBOX_SHOW_OTHERS

package/cmake/0001-rename_cmake_rootfile.patch

@@ -0,0 +1,23 @@
+ctest fails on the target, because it cannot find CMake.cmake inside
+CMAKE_DATA_DIR (typically set to "/usr/share/cmake-3.0"): all *.cmake
+files are removed at build time via the target-finalize rule.
+
+This buildroot-specific patch makes sure ctest looks also for
+"Modules/CMake.cmake.ctest" before complaining
+
+Signed-off-by: Davide Viti <zinosat@tiscali.it>
+
+--- cmake-3.0.2/Source/cmake.cxx~	2014-09-11 15:24:01.000000000 +0200
++++ cmake-3.0.2/Source/cmake.cxx	2014-11-25 15:48:04.461033690 +0100
+@@ -957,7 +957,10 @@
+      "Path to cpack program executable.", cmCacheManager::INTERNAL);
+ #endif
+   if(!cmSystemTools::FileExists(
+-       (cmSystemTools::GetCMakeRoot()+"/Modules/CMake.cmake").c_str()))
++       (cmSystemTools::GetCMakeRoot()+"/Modules/CMake.cmake").c_str()) &&
++     !cmSystemTools::FileExists(
++       (cmSystemTools::GetCMakeRoot()+"/Modules/CMake.cmake.ctest").c_str())
++     )
+     {
+     // couldn't find modules
+     cmSystemTools::Error("Could not find CMAKE_ROOT !!!\n"

package/cmake/Config.in

@@ -0,0 +1,25 @@
+config BR2_PACKAGE_CMAKE
+	bool
+
+config BR2_PACKAGE_CMAKE_CTEST
+	bool "ctest"
+	select BR2_PACKAGE_CMAKE
+	select BR2_PACKAGE_ZLIB
+	select BR2_PACKAGE_LIBCURL
+	select BR2_PACKAGE_LIBARCHIVE
+	select BR2_PACKAGE_EXPAT
+	select BR2_PACKAGE_BZIP2
+	select BR2_PACKAGE_XZ
+	depends on BR2_USE_WCHAR # libarchive
+	depends on BR2_INSTALL_LIBSTDCPP
+	help
+	  CTest is a testing tool distributed as a part of CMake. It
+	  can be used to automate updating (using CVS for example),
+	  configuring, building, testing, performing memory checking,
+	  performing coverage, and submitting results to a CDash or
+	  Dart dashboard system.
+
+	  http://www.cmake.org/
+
+comment "ctest needs a toolchain w/ C++, wchar"
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_USE_WCHAR

package/cmake/cmake.mk

@@ -11,6 +11,14 @@ CMAKE_LICENSE = BSD-3c
 CMAKE_LICENSE_FILES = Copyright.txt
 
 HOST_CMAKE_DEPENDENCIES = host-pkgconf
+CMAKE_DEPENDENCIES = zlib libcurl libarchive expat bzip2 xz
+
+CMAKE_CONF_OPTS = \
+	-DKWSYS_LFS_WORKS=$(if $(BR2_LARGEFILE),TRUE,FALSE) \
+	-DKWSYS_CHAR_IS_SIGNED=TRUE \
+	-DCMAKE_USE_SYSTEM_LIBRARIES=1 \
+	-DCTEST_USE_XMLRPC=OFF \
+	-DBUILD_CursesDialog=OFF
 
 # Get rid of -I* options from $(HOST_CPPFLAGS) to prevent that a
 # header available in $(HOST_DIR)/usr/include is used instead of a
@@ -39,4 +47,26 @@ define HOST_CMAKE_INSTALL_CMDS
 	$(HOST_MAKE_ENV) $(MAKE) -C $(@D) install
 endef
 
+define CMAKE_REMOVE_EXTRA_DATA
+	rm $(TARGET_DIR)/usr/bin/{cmake,cpack}
+	rm -fr $(TARGET_DIR)/usr/share/cmake-$(CMAKE_VERSION_MAJOR)/{completions,editors}
+	rm -fr $(TARGET_DIR)/usr/share/cmake-$(CMAKE_VERSION_MAJOR)/{Help,include}
+endef
+
+define CMAKE_INSTALL_CTEST_CFG_FILE
+	$(INSTALL) -m 0644 -D $(@D)/Modules/CMake.cmake \
+		$(TARGET_DIR)/usr/share/cmake-$(CMAKE_VERSION_MAJOR)/Modules/CMake.cmake.ctest
+endef
+
+CMAKE_POST_INSTALL_TARGET_HOOKS += CMAKE_REMOVE_EXTRA_DATA
+CMAKE_POST_INSTALL_TARGET_HOOKS += CMAKE_INSTALL_CTEST_CFG_FILE
+
+define CMAKE_INSTALL_TARGET_CMDS
+	(cd $(@D); \
+		$(HOST_MAKE_ENV) DESTDIR=$(TARGET_DIR) \
+		cmake -P cmake_install.cmake \
+	)
+endef
+
+$(eval $(cmake-package))
 $(eval $(host-generic-package))