Give Environment Variable as Hint to find_package by default

README.md

@@ -6,8 +6,16 @@
 
 ##CMake Generation:
 * Available since version 0.0.22-SNAPSHOT. 
+
+###Interface in Java Code
 * If `isGenerateCMakeEnabled()` additionally to the C++ files _CMakeLists.txt_ is generated. 
   This CMake file builds a static library out of the generated components.
 * Find package (https://cmake.org/cmake/help/v3.8/command/find_package.html?highlight=i) can be configured via public method `getCMakeConfig()` from the generator class. FindModule files are generated automatically which searches for header include directories and libraries at default locations.    
 * Example: `getCMakeConfig().addModuleDependency(new CMakeFindModule("LibName", "LibHeader.hpp", "libname", headerSearchPaths, bibrarySearchPaths, findHeaderEnabled, findLibEnabled, isRequiered));`
 * Additionally any CMake command can be inserted via `getCMakeConfig().addCMakeCommand("CMAKE_CXX_FLAGS  \"${CMAKE_CXX_FLAGS} -Wno-deprecated\"")`or at the end via `addCMakeCommandEnd("#some command at the end")`
+
+### Note on find_package
+If no search directory is specified CMake will search on default locations. For linux this is _/usr/lib_ , _usr/local/lib_ , _usr/include_ etc. Windows systems does not have a default library path. The generated CMake files also are using environment variables as hint. If a package could not be found but it is installed somewhere on the system please create an environment variable **PackageName_HOME**.  
+
+Here an example for Armadillo:
+Create a environment variable called _Armadillo_Home_ with the path to the base directory of your Armadillo installation.
\ No newline at end of file

src/main/resources/template/cmake/CMakeFindPackageTemplate.ftl

@@ -15,16 +15,18 @@ find_path(${viewModel.packageName}_INCLUDE_DIR
         <#list viewModel.includePaths as var>
         "${var}"
         </#list>
+        HINTS $ENV{${viewModel.packageName}_HOME}
         )
 </#if>
 <#if viewModel.findLibrary>
 find_library(${viewModel.packageName}_LIBRARY
         NAMES ${viewModel.libName}
-        PATH_SUFFIXES "lib" "lib64" "lib/x86_64-linux-gnu" "examples/lib_win64" "build"
+        PATH_SUFFIXES "lib" "lib64" "lib/x86_64-linux-gnu" "examples/lib_win64" "build" "Release"
         PATHS
         <#list viewModel.libPaths as var>
         "${var}"
         </#list>
+        HINTS $ENV{${viewModel.packageName}_HOME}
         )
 </#if>
 

src/test/resources/results/cmake/test/BasicConstantAssignment/cmake/FindArmadillo.cmake

@@ -11,11 +11,13 @@ find_path(Armadillo_INCLUDE_DIR
         NAMES armadillo
         PATH_SUFFIXES "include"
         PATHS
+        HINTS $ENV{Armadillo_HOME}
         )
 find_library(Armadillo_LIBRARY
         NAMES armadillo
-        PATH_SUFFIXES "lib" "lib64" "lib/x86_64-linux-gnu" "examples/lib_win64" "build"
+        PATH_SUFFIXES "lib" "lib64" "lib/x86_64-linux-gnu" "examples/lib_win64" "build" "Release"
         PATHS
+        HINTS $ENV{Armadillo_HOME}
         )
 
 include(FindPackageHandleStandardArgs)

src/test/resources/results/cmake/testing/Model/cmake/FindArmadillo.cmake

@@ -11,11 +11,13 @@ find_path(Armadillo_INCLUDE_DIR
         NAMES armadillo
         PATH_SUFFIXES "include"
         PATHS
+        HINTS $ENV{Armadillo_HOME}
         )
 find_library(Armadillo_LIBRARY
         NAMES armadillo
-        PATH_SUFFIXES "lib" "lib64" "lib/x86_64-linux-gnu" "examples/lib_win64" "build"
+        PATH_SUFFIXES "lib" "lib64" "lib/x86_64-linux-gnu" "examples/lib_win64" "build" "Release"
         PATHS
+        HINTS $ENV{Armadillo_HOME}
         )
 
 include(FindPackageHandleStandardArgs)