1 files changed, 8 insertions, 1 deletions
diff --git a/CMake/AbseilHelpers.cmake b/CMake/AbseilHelpers.cmake
index 350282f7a0c4..49ef7dcc0b69 100644
--- a/CMake/AbseilHelpers.cmake
+++ b/CMake/AbseilHelpers.cmake
@@ -90,8 +90,15 @@ function(absl_cc_library)
     endif()
 
     # Check if this is a header-only library
+    # Note that as of February 2019, many popular OS's (for example, Ubuntu
+    # 16.04 LTS) only come with cmake 3.5 by default.  For this reason, we can't
+    # use list(FILTER...)
     set(ABSL_CC_SRCS "${ABSL_CC_LIB_SRCS}")
-    list(FILTER ABSL_CC_SRCS EXCLUDE REGEX ".*\\.h")
+    foreach(src_file IN LISTS ABSL_CC_SRCS)
+      if(${src_file} MATCHES ".*\\.(h|inc)")
+        list(REMOVE_ITEM ABSL_CC_SRCS "${src_file}")
+      endif()
+    endforeach()
     if ("${ABSL_CC_SRCS}" STREQUAL "")
       set(ABSL_CC_LIB_IS_INTERFACE 1)
     else()