Fix problem with examples find_package

Author: rdbisme

examples/CMakeLists.txt

@@ -21,7 +21,7 @@ cmake_minimum_required(VERSION 2.8.2)
 
 # Append the PROJECT_BINARY_DIR to CMAKE_PREFIX_PATH in order to be able to 
 # find the configuration files at build time
-list(APPEND CMAKE_PREFIX_PATH ${PROJECT_BINARY_DIR})
+list(APPEND CMAKE_PREFIX_PATH ${PROJECT_BINARY_DIR}/src)
 
 # c++ examples
 add_subdirectory(c++)

examples/c++/CMakeLists.txt.shared

@@ -6,10 +6,11 @@ get_filename_component(example_name ${CMAKE_CURRENT_SOURCE_DIR} NAME)
 project(${example_name})
 
 # Let's require mutation++. It should export a suitable config that also
-# exports include directories for Eigen
-find_package(mutation++ REQUIRED)
-if (NOT mutation++_FOUND)
-    message(FATAL_ERROR "mutation++ not found")
+# exports include directories for Eigen. The `if` is needed to allow the
+# examples to build during the process of building the entire mutation++
+# tree.
+if(NOT TARGET mutation++)
+    find_package(mutation++ REQUIRED)
 endif()
 
 add_executable(${example_name} ${example_name}.cpp)

src/CMakeLists.txt

@@ -19,8 +19,6 @@
 # <http://www.gnu.org/licenses/>.
 #
 
-cmake_minimum_required(VERSION 2.6)
-
 #- Add sources for a target
 #
 #  ADD_SOURCES(<target> <source1> [<source2> ...])
@@ -108,18 +106,6 @@ endif()
 
 # Install and export targets
 include(GNUInstallDirs)
-install(TARGETS mutation++ EXPORT mutation++Targets
-    LIBRARY  DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE  DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    RUNTIME  DESTINATION ${CMAKE_INSTALL_BINDIR}
-    INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-)
-
-install(EXPORT mutation++Targets
-    FILE        mutation++Targets.cmake
-    NAMESPACE   mutation++::
-    DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/mutation++"
-)
 
 # Version configuration file
 include(CMakePackageConfigHelpers)
@@ -146,3 +132,23 @@ install(FILES
     "${CMAKE_CURRENT_BINARY_DIR}/mutation++ConfigVersion.cmake"
     DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/mutation++
 )
+
+
+install(TARGETS mutation++ EXPORT mutation++Targets
+    LIBRARY  DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE  DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME  DESTINATION ${CMAKE_INSTALL_BINDIR}
+    INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+)
+
+export(EXPORT mutation++Targets
+    FILE mutation++Targets.cmake
+    NAMESPACE mutation++::
+)
+
+install(EXPORT mutation++Targets
+    FILE        mutation++Targets.cmake
+    NAMESPACE   mutation++::
+    DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/mutation++"
+    EXPORT_LINK_INTERFACE_LIBRARIES
+)

src/general/CMakeLists.txt

@@ -20,6 +20,7 @@
 #
 
 cmake_minimum_required(VERSION 2.6)
+cmake_policy(SET CMP0022 NEW)
 
 add_sources(mutation++
     Mixture.cpp
@@ -43,10 +44,11 @@ foreach (exe ${mutation++_exes})
         PRIVATE
             mutation++
     )
-    install(
-        TARGETS ${exe}
-        EXPORT mutation++Targets
-        RUNTIME DESTINATION "${INSTALL_BIN_DIR}" COMPONENT bin)
+#    install(
+#        TARGETS ${exe}
+#        EXPORT mutation++Targets
+#        RUNTIME DESTINATION "${INSTALL_BIN_DIR}"
+#)
 endforeach(exe ${mutation++_exes})