Merge pull request #1948 from emailweixu/protobuf.cmake

Fix protobuf.cmake to handle empty PROTOBUF_VERSION correctly
9 years ago · 29026f9fcc
parent ec3111aba0 e4af8ef4e8
commit 29026f9fcc
1 changed files with 4 additions and 4 deletions
--- a/cmake/external/protobuf.cmake
+++ b/cmake/external/protobuf.cmake
@ -20,7 +20,7 @@ FIND_PACKAGE(Protobuf ${PROTOBUF_VERSION})
 IF(PROTOBUF_FOUND)
    EXEC_PROGRAM(${PROTOBUF_PROTOC_EXECUTABLE} ARGS --version OUTPUT_VARIABLE PROTOBUF_VERSION)
    STRING(REGEX MATCH "[0-9]+.[0-9]+" PROTOBUF_VERSION "${PROTOBUF_VERSION}")
-    IF (${PROTOBUF_VERSION} VERSION_LESS "3.1.0")
+    IF ("${PROTOBUF_VERSION}" VERSION_LESS "3.1.0")
        SET(PROTOBUF_FOUND OFF)
    ENDIF()
 ENDIF(PROTOBUF_FOUND)