[Feature](mlu-ops):fix sample compile. (#1093)

CMakeLists.txt

@@ -192,6 +192,9 @@ bang_add_library(mluops SHARED ${src_files} ${src_helper_files})
 if(${MLUOP_BUILD_STATIC} MATCHES "ON")
   message("-- Build MLUOP static")
   bang_add_library(mluops_static STATIC ${src_files} ${src_helper_files} ${core_src_files})
+  if (TARGET fmt::fmt-header-only)
+    target_link_libraries(mluops_static fmt::fmt-header-only)
+  endif()
 endif()
 
 target_link_libraries(mluops

samples/mlu-ops/build.sh

@@ -2,17 +2,17 @@
 
 #check compiler version and consider activate devtoolset for CentOS 7
 if [ "$OS_RELEASE_ID" = "centos" -a "$OS_RELEASE_VERSION_ID" = "7" ]; then
-  if [ ! -f "/opt/rh/devtoolset-7/enable" ]; then
-    echo "You are using CentOS 7 but without 'devtoolset-7' installed."
+  if [ ! -f "/opt/rh/devtoolset-8/enable" ]; then
+    echo "You are using CentOS 8 but without 'devtoolset-7' installed."
     echo "You should use docker image, or prepare devtoolset-7 by yourself."
     sleep 1 # I hope user will see it
   fi
 fi
 
 if [[ "$(g++ --version | head -n1 | awk '{ print $3 }' | cut -d '.' -f1)" < "5" ]]; then
-  echo "we do not support g++<5, try to activate devtoolset-7 env"
-  source /opt/rh/devtoolset-7/enable && echo "devtoolset-7 activated" \
-    || ( echo "source devtoolset-7 failed, ignore this info if you have set env TOOLCHAIN_ROOT, TARGET_C_COMPILER, TARGET_CXX_COMPILER properly (see more details in README.md)" && sleep 4 ) # I hope user will see it
+  echo "we do not support g++<5, try to activate devtoolset-8 env"
+  source /opt/rh/devtoolset-8/enable && echo "devtoolset-8 activated" \
+    || ( echo "source devtoolset-8 failed, ignore this info if you have set env TOOLCHAIN_ROOT, TARGET_C_COMPILER, TARGET_CXX_COMPILER properly (see more details in README.md)" && sleep 4 ) # I hope user will see it
 fi
 
 SCRIPT_DIR=`dirname $0`