I don't think LIB_ONLY is necessary: use "make install/fast"

CMakeLists.txt

@@ -70,7 +70,6 @@ option(ENABLE_TETGEN_OLD "Use old version of Tetgen" OFF)
 option(ENABLE_VORO3D "Enable Voro3D" ${DEFAULT})
 option(ENABLE_WRAP_JAVA "Build Java wrappers" OFF)
 option(ENABLE_WRAP_PYTHON "Build Python wrappers" OFF)
-option(LIB_ONLY "Build only the library (gmsh executable is not created if OFF)" OFF)
 
 set(GMSH_MAJOR_VERSION 2)
 set(GMSH_MINOR_VERSION 7)
@@ -1077,21 +1076,19 @@ if(ENABLE_BUILD_SHARED OR ENABLE_WRAP_PYTHON OR ENABLE_WRAP_JAVA)
 endif(ENABLE_BUILD_SHARED OR ENABLE_WRAP_PYTHON OR ENABLE_WRAP_JAVA)
 
 # binary targets
-if(NOT LIB_ONLY)
-  if(HAVE_FLTK)
-    add_executable(gmsh WIN32 Fltk/Main.cpp ${GMSH_SRC})
-    add_executable(gmsh_dynamic EXCLUDE_FROM_ALL Fltk/Main.cpp)
-    target_link_libraries(gmsh_dynamic shared)
-  elseif(HAVE_QT)
-    qt4_wrap_cpp(GMSH_MOC_SRC ${GMSH_MOC_HDR})
-    add_executable(gmsh WIN32 Qt/Main.cpp ${GMSH_SRC} ${GMSH_MOC_SRC})
-  else(HAVE_FLTK)
-    add_executable(gmsh Common/Main.cpp ${GMSH_SRC})
-    add_executable(gmsh_dynamic EXCLUDE_FROM_ALL Common/Main.cpp)
-    target_link_libraries(gmsh_dynamic shared)
-  endif(HAVE_FLTK)
-  target_link_libraries(gmsh ${LINK_LIBRARIES})
-endif(NOT LIB_ONLY)
+if(HAVE_FLTK)
+  add_executable(gmsh WIN32 Fltk/Main.cpp ${GMSH_SRC})
+  add_executable(gmsh_dynamic EXCLUDE_FROM_ALL Fltk/Main.cpp)
+  target_link_libraries(gmsh_dynamic shared)
+elseif(HAVE_QT)
+  qt4_wrap_cpp(GMSH_MOC_SRC ${GMSH_MOC_HDR})
+  add_executable(gmsh WIN32 Qt/Main.cpp ${GMSH_SRC} ${GMSH_MOC_SRC})
+else(HAVE_FLTK)
+  add_executable(gmsh Common/Main.cpp ${GMSH_SRC})
+  add_executable(gmsh_dynamic EXCLUDE_FROM_ALL Common/Main.cpp)
+  target_link_libraries(gmsh_dynamic shared)
+endif(HAVE_FLTK)
+target_link_libraries(gmsh ${LINK_LIBRARIES})
 
 # increase stack to 16Mb on Windows to avoid overflows in recursive
 # tet classification for large 3D Delaunay grids + force static
@@ -1194,9 +1191,7 @@ endif(WIN32 OR CYGWIN)
 
 # mark targets as optional so we can install them separately if needed
 # (e.g. "make lib" or "make shared" followed by "make install/fast")
-if(NOT LIB_ONLY)
-  install(TARGETS gmsh DESTINATION ${GMSH_BIN} OPTIONAL)
-endif(NOT LIB_ONLY)
+install(TARGETS gmsh DESTINATION ${GMSH_BIN} OPTIONAL)
 if(ENABLE_BUILD_LIB)
   install(TARGETS lib DESTINATION lib OPTIONAL)
 endif(ENABLE_BUILD_LIB)