Make C++ library install prefix configurable

Currently project name is used as a generated C++ library install prefix.
Add CMake setting LIBRARY_INSTALL_PREFIX to make it configurable.

#1

RELEASE_NOTES.md

@@ -1,3 +1,8 @@
+v0.0.2
+------
+[Make C++ library install prefix configurable](https://github.com/vontikov/sbe-gradle-plugin/issues/1)
+
+Initial release
 v0.0.1
 ------
 Initial release

gradle.properties

@@ -1,3 +1,3 @@
 artifact_name=sbe-generator-plugin
 artifact_group=vontikov
-artifact_version=0.0.1
+artifact_version=0.0.2

src/main/groovy/vontikov/SbeGeneratorPlugin.groovy

@@ -198,7 +198,7 @@ class SbeGeneratorPlugin implements Plugin<Project> {
                     into(ext.cppCmakeDir)
                     from(project.file(TMP_DIR + '/' + cmakeScript))
                     filter {
-                        it.startsWith('@') ?
+                        it.startsWith('@PROJECT') ?
                                 "project(${nm} VERSION ${project.version})"
                                 : it
                     }

src/main/resources/cmake/CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.0)
 
-@
+@PROJECT
 
 #
 # Options
@@ -19,7 +19,7 @@ set(VERSION_FILE_NAME     ${GEN_DIR}/${PROJECT_NAME}ConfigVersion.cmake)
 set(TARGETS_FILE_NAME     ${PROJECT_NAME}Targets)
 
 #
-# Configuragle settings
+# Configurable settings
 #
 include(GNUInstallDirs)
 
@@ -33,7 +33,7 @@ set(DEFAULT_BUILD_TYPE "Release")
 if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
   set(
     CMAKE_BUILD_TYPE  "${DEFAULT_BUILD_TYPE}"
-    CACHE STRING      "Choose the type of build."
+    CACHE STRING      "Choose the type of build"
     FORCE
   )
   set_property(
@@ -46,14 +46,22 @@ if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
   )
 endif()
 
+if(NOT LIBRARY_INSTALL_PREFIX)
+  set(
+    LIBRARY_INSTALL_PREFIX "${PROJECT_NAME}"
+    CACHE STRING   "Choose project install prefix"
+    FORCE
+  )
+endif()
+
 set(
   LIBRARY_INSTALL_DIR "lib"
-  CACHE PATH          "The library installation directory"
+  CACHE PATH          "Library installation directory"
   FORCE
 )
 
-set(CONFIG_INSTALL_DIR  "${LIBRARY_INSTALL_DIR}/${PROJECT_NAME}/cmake")
-set(INCLUDE_INSTALL_DIR "${LIBRARY_INSTALL_DIR}/${PROJECT_NAME}/${CMAKE_INSTALL_INCLUDEDIR}")
+set(CONFIG_INSTALL_DIR  "${LIBRARY_INSTALL_DIR}/${LIBRARY_INSTALL_PREFIX}/cmake")
+set(INCLUDE_INSTALL_DIR "${LIBRARY_INSTALL_DIR}/${LIBRARY_INSTALL_PREFIX}/${CMAKE_INSTALL_INCLUDEDIR}")
 set(INCLUDE_EXPORT_DIR  "${CMAKE_INSTALL_INCLUDEDIR}")
 
 #