centos7 Qt5.9.1 ucal_close_53错误解决

Qt5.9.1报错：

undefined reference to `ucal_setMillis_53'

undefined reference to `ucnv_fromUnicode_53'
undefined reference to `ucal_get_53'
undefined reference to `ucal_inDaylightTime_53'
undefined reference to `ucal_open_53'
undefined reference to `ucnv_countAvailable_53'
undefined reference to `ucnv_countAliases_53'
undefined reference to `u_errorName_53'
undefined reference to `ucal_openCountryTimeZones_53'
undefined reference to `u_strToUpper_53'
undefined reference to `ucnv_getDefaultName_53'
undefined reference to `uenum_next_53'
undefined reference to `ucol_strcoll_53'
undefined reference to `ucnv_getMaxCharSize_53'
undefined reference to `ucnv_getAvailableName_53'
undefined reference to `ucol_open_53'
undefined reference to `ucal_getTimeZoneDisplayName_53'
undefined reference to `ucnv_toUnicode_53'
undefined reference to `uenum_close_53'
undefined reference to `ucol_getSortKey_53'
undefined reference to `ucnv_getAlias_53'
undefined reference to `ucnv_close_53'
undefined reference to `ucol_setAttribute_53'
undefined reference to `ucal_close_53'
undefined reference to `ucal_openTimeZoneIDEnumeration_53'
undefined reference to `ucal_openTimeZones_53'
undefined reference to `ucnv_getStandardName_53'
undefined reference to `ucol_close_53'
undefined reference to `ucnv_compareNames_53'
undefined reference to `ucal_clone_53'
undefined reference to `u_strToLower_53'
undefined reference to `ucal_getDefaultTimeZone_53'
undefined reference to `ucnv_open_53'
undefined reference to `ucnv_setSubstChars_53'
undefined reference to `ucal_getDSTSavings_53'

collect2: error: ld returned 1 exit status

解决方法：

1.打开终端，输入gedit ~/.bashrc。在最后一行添加 

 export LD_LIBRARY_PATH=/usr/local/Qt/5.5/gcc_64/lib:$LD_LIBRARY_PATH

保存。

2.在终端再次输入source ~/.bashrc。重启电脑即可

备注：/usr/local/Qt/5.5/gcc_64/lib 根据Qt安装的目录不同有所变化