libgcc_s.so.1 must be installed for pthread_cancel to work - libgcc_s.so.1 must be installed for pthread_cancel to work Description You may receive this error when you run the Quartus ® II software on a version of the Linux operating system Altera ® does not officially support. As a workaround, set the environment variable LD_ASSUME_KERNEL to the value 2.4 before running the Quartus II software. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']