core: moved VMCIRCBUF related code to runtime

This build stuff should not be at the top level.

1 files changed, 23 insertions, 0 deletions

diff --git a/gnuradio-core/src/lib/runtime/CMakeLists.txt b/gnuradio-core/src/lib/runtime/CMakeLists.txt
index 1415ff4c6..5f3672dde 100644
--- a/gnuradio-core/src/lib/runtime/CMakeLists.txt
+++ b/gnuradio-core/src/lib/runtime/CMakeLists.txt
@@ -22,6 +22,29 @@
 ########################################################################
 
 ########################################################################
+# Control availability of vmcircbuf methods.
+# For now, only allows disabling of shm methods, which cause uncatchable
+#    segmentation faults on Cygwin with gcc 4.x (x <= 5)
+# Usage:
+#   GR_VMCIRCBUF()
+#
+# Will set TRY_SHM_VMCIRCBUF to 1 by default except on Windows machines.
+# Can manually set with -DTRY_SHM_VMCIRCBUF=0|1
+########################################################################
+
+  if(WIN32)
+    OPTION(TRY_SHM_VMCIRCBUF "Try SHM VMCIRCBUF" OFF)
+  else(WIN32)
+    OPTION(TRY_SHM_VMCIRCBUF "Try SHM VMCIRCBUF" ON)
+  endif(WIN32)
+
+  message(STATUS "TRY_SHM_VMCIRCBUF set to ${TRY_SHM_VMCIRCBUF}.")
+
+  if(TRY_SHM_VMCIRCBUF)
+    add_definitions( -DTRY_SHM_VMCIRCBUF )
+  endif(TRY_SHM_VMCIRCBUF)
+
+########################################################################
 # Append gnuradio-core library sources
 ########################################################################
 list(APPEND gnuradio_core_sources