fix the typo

cmake/external/gflags.cmake

@@ -38,8 +38,8 @@ ExternalProject_Add(
                     -DCMAKE_CXX_FLAGS_RELEASE=${CMAKE_CXX_FLAGS_RELEASE}
                     -DCMAKE_CXX_FLAGS_DEBUG=${CMAKE_CXX_FLAGS_DEBUG}
                     -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
-                    -DCMAKE_C_FLAGS_DEBUG=${DCMAKE_C_FLAGS_DEBUG}
-                    -DCMAKE_C_FLAGS_RELEASE=${DCMAKE_C_FLAGS_RELEASE}
+                    -DCMAKE_C_FLAGS_DEBUG=${CMAKE_C_FLAGS_DEBUG}
+                    -DCMAKE_C_FLAGS_RELEASE=${CMAKE_C_FLAGS_RELEASE}
                     -DBUILD_STATIC_LIBS=ON
                     -DCMAKE_INSTALL_PREFIX=${GFLAGS_INSTALL_DIR}
                     -DCMAKE_POSITION_INDEPENDENT_CODE=ON

cmake/external/glog.cmake

@@ -49,8 +49,8 @@ ExternalProject_Add(
                     -DCMAKE_CXX_FLAGS_RELEASE=${CMAKE_CXX_FLAGS_RELEASE}
                     -DCMAKE_CXX_FLAGS_DEBUG=${CMAKE_CXX_FLAGS_DEBUG}
                     -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
-                    -DCMAKE_C_FLAGS_DEBUG=${DCMAKE_C_FLAGS_DEBUG}
-                    -DCMAKE_C_FLAGS_RELEASE=${DCMAKE_C_FLAGS_RELEASE}
+                    -DCMAKE_C_FLAGS_DEBUG=${CMAKE_C_FLAGS_DEBUG}
+                    -DCMAKE_C_FLAGS_RELEASE=${CMAKE_C_FLAGS_RELEASE}
                     -DCMAKE_INSTALL_PREFIX=${GLOG_INSTALL_DIR}
                     -DCMAKE_INSTALL_LIBDIR=${GLOG_INSTALL_DIR}/lib
                     -DCMAKE_POSITION_INDEPENDENT_CODE=ON

cmake/external/openblas.cmake

@@ -84,8 +84,8 @@ IF(NOT ${CBLAS_FOUND})
                 CMAKE_ARGS    -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
                 -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
                 -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
-                -DCMAKE_C_FLAGS_DEBUG=${DCMAKE_C_FLAGS_DEBUG}
-                -DCMAKE_C_FLAGS_RELEASE=${DCMAKE_C_FLAGS_RELEASE}
+                -DCMAKE_C_FLAGS_DEBUG=${CMAKE_C_FLAGS_DEBUG}
+                -DCMAKE_C_FLAGS_RELEASE=${CMAKE_C_FLAGS_RELEASE}
                 -DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}
                 -DCMAKE_CXX_FLAGS_RELEASE=${CMAKE_CXX_FLAGS_RELEASE}
                 -DCMAKE_CXX_FLAGS_DEBUG=${CMAKE_CXX_FLAGS_DEBUG}

cmake/external/protobuf.cmake

@@ -192,8 +192,8 @@ FUNCTION(build_protobuf TARGET_NAME BUILD_FOR_HOST)
             "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}"
             "-DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}"
             "-DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}"
-            "-DCMAKE_C_FLAGS_DEBUG=${DCMAKE_C_FLAGS_DEBUG}"
-            "-DCMAKE_C_FLAGS_RELEASE=${DCMAKE_C_FLAGS_RELEASE}"
+            "-DCMAKE_C_FLAGS_DEBUG=${CMAKE_C_FLAGS_DEBUG}"
+            "-DCMAKE_C_FLAGS_RELEASE=${CMAKE_C_FLAGS_RELEASE}"
             "-DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}"
             "-DCMAKE_CXX_FLAGS_RELEASE=${CMAKE_CXX_FLAGS_RELEASE}"
             "-DCMAKE_CXX_FLAGS_DEBUG=${CMAKE_CXX_FLAGS_DEBUG}"