Warning: Can't find the architecture 'FLEX_ADSUB_MOD(imp1)' in the library 'DW_APEX20K-3'. (LBR-1) (Synopsys Design Compiler) - Warning: Can't find the architecture 'FLEX_ADSUB_MOD(imp1)' in the library 'DW_APEX20K-3'. (LBR-1) (Synopsys Design Compiler) Description This warning appears if the Synopsys DesignWare libraries have lower-case file names. The DesignWare libraries will be referenced as specified in your .synopsys_dc.setup file. The following is an example of a line that references the DesignWare libraries: define_design_lib DW_APEX20K-3 -path ~/synopsys/libraries/dw/lib In the above example, the ~/synopsys/libraries/dw/lib directory contains the DesignWare library files. These libraries may be specified incorrectly due to the differences in case-sensitivity between a Windows and UNIX operating system. If you copy these files from the Quartus TM software using Windows-based PC onto a UNIX workstation without maintaining the case of the filenames, you will receive the above warning message. The Windows operating system is case-insensitive, while UNIX file systems are case-sensitive. The files in the DesignWare library should follow a case format with the filename in capital letters and the extension in lower case letters. Here is an example of a library file that meets the specified criteria: FLEX_ADD_MOD.syn Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']