gentoo-overlay/sci-libs/liborigin/files/liborigin-3.0.1-buildsystem.patch

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2f3b26d..4c543bf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,6 +28,8 @@ else()
     set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -pedantic" )
 endif()
 
+option(ENABLE_TOOLS "Install opj2dat command line util" ON)
+
 # compile-time configuration variables to be linked in
 configure_file(config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h)
 include_directories(${CMAKE_CURRENT_BINARY_DIR})
@@ -44,7 +46,6 @@ set (devel-headers
     OriginObj.h
     OriginFile.h
     OriginParser.h
-    tree.hh
 )
 
 # object library
@@ -87,6 +88,7 @@ if (BUILD_SHARED_LIBS)
 endif ()
 
 # command line util
+if(ENABLE_TOOLS)
 if (BUILD_STATIC_LIBS)
     add_executable(opj2dat opj2dat.cpp)
     target_link_libraries (opj2dat origin_static)
@@ -94,6 +96,7 @@ elseif (BUILD_SHARED_LIBS)
     add_executable(opj2dat opj2dat.cpp)
     target_link_libraries (opj2dat origin_shared)
 endif ()
+endif ()
 
 # Generate a pkg-config file matching this config
 configure_file("liborigin.pc.in" "liborigin.pc" @ONLY)
@@ -103,7 +106,9 @@ install(FILES ${devel-headers} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/liborigin
 # install pkg-config file
 if (BUILD_STATIC_LIBS OR BUILD_SHARED_LIBS)
     install(FILES ${CMAKE_CURRENT_BINARY_DIR}/liborigin.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+    if(ENABLE_TOOLS)
     install(TARGETS opj2dat DESTINATION ${CMAKE_INSTALL_BINDIR} OPTIONAL)
+    endif ()
 endif ()
 
 # documentation