Tiding up cmake code for creating symbolic links
diff --git a/apps/CMakeLists.txt b/apps/CMakeLists.txt
index db2a803..48fabb0 100644
--- a/apps/CMakeLists.txt
+++ b/apps/CMakeLists.txt
@@ -18,37 +18,26 @@
 # Boston, MA 02110-1301, USA.
 
 include(GrPython)
+include(CreateSymlink)
+add_subdirectory(helpers)
 
 GR_PYTHON_INSTALL(
     PROGRAMS
     grgsm_livemon
     grgsm_scanner
     grgsm_decode
-    helpers/grgsm_capture.py
-    helpers/grgsm_channelize.py
     DESTINATION bin
 )
 
-#create logical links in order to keep legacy names of apps
-macro(CREATE_SYMLINK _source _dest)
-    set(source ${CMAKE_CURRENT_SOURCE_DIR}/${_source})
-    set(dest ${CMAKE_CURRENT_BINARY_DIR}/${_dest})
-    list(APPEND symlinks ${dest})
-    add_custom_command(
-        DEPENDS ${source} OUTPUT ${dest}
-        COMMAND ln -sf ${_source} ${_dest}
-    )
-endmacro(CREATE_SYMLINK)
-
 CREATE_SYMLINK(grgsm_livemon airprobe_rtlsdr.py)
-CREATE_SYMLINK(helpers/grgsm_capture.py airprobe_rtlsdr_capture.py)
 CREATE_SYMLINK(grgsm_decode airprobe_decode.py)
 CREATE_SYMLINK(grgsm_scanner airprobe_rtlsdr_scanner.py)
 
-add_custom_target(multi_rtl_grc_xml_blocks ALL DEPENDS ${symlinks})
+add_custom_target(apps_symlinks ALL DEPENDS ${symlinks})
 
 install(
     PROGRAMS
     ${symlinks}
     DESTINATION bin
 )
+
diff --git a/apps/helpers/CMakeLists.txt b/apps/helpers/CMakeLists.txt
new file mode 100644
index 0000000..4418ed7
--- /dev/null
+++ b/apps/helpers/CMakeLists.txt
@@ -0,0 +1,39 @@
+# Copyright 2011 Free Software Foundation, Inc.
+#
+# This file is part of GNU Radio
+#
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+
+include(GrPython)
+include(CreateSymlink)
+
+GR_PYTHON_INSTALL(
+    PROGRAMS
+    grgsm_capture.py
+    grgsm_channelize.py
+    DESTINATION bin
+)
+
+CREATE_SYMLINK(grgsm_capture.py airprobe_rtlsdr_capture.py)
+
+add_custom_target(helpers_symlinks ALL DEPENDS ${symlinks})
+
+install(
+    PROGRAMS
+    ${symlinks}
+    DESTINATION bin
+)
+
diff --git a/cmake/Modules/CreateSymlink.cmake b/cmake/Modules/CreateSymlink.cmake
new file mode 100644
index 0000000..574c443
--- /dev/null
+++ b/cmake/Modules/CreateSymlink.cmake
@@ -0,0 +1,10 @@
+#create logical links in order to keep legacy names of apps
+macro(CREATE_SYMLINK _source _dest)
+    set(source ${CMAKE_CURRENT_SOURCE_DIR}/${_source})
+    set(dest ${CMAKE_CURRENT_BINARY_DIR}/${_dest})
+    list(APPEND symlinks ${dest})
+    add_custom_command(
+        DEPENDS ${source} OUTPUT ${dest}
+        COMMAND ln -sf ${_source} ${_dest}
+    )
+endmacro(CREATE_SYMLINK)