以下是出现的错误提示：

Info: Starting PTF file elaboration.
3 [main] sh 3700 fork: child 2068 - died waiting for longjmp before initialization, errno 11
c:/altera/72/quartus/sopc_builder/bin/nios_sh: fork: Resource temporarily unavailable
Error: D:\WORK\QUARTUS projects\test4/nios32.ptf: Failed to refresh PTF file
Info: Finished elaborating PTF file.
Executing: c:/altera/72/quartus//sopc_builder/bin/sopc_builder --classic --generate D:/WORK/QUARTUS projects/test4/nios32.ptf
Info: Starting generation...
3 [main] sh 3844 fork: child 900 - died waiting for longjmp before initialization, errno 11
c:/altera/72/quartus/sopc_builder/bin/nios_sh: fork: Resource temporarily unavailable
3 [main] sh 1784 fork: child 3876 - died waiting for longjmp before initialization, errno 11
c:/altera/72/quartus/sopc_builder/bin/nios_sh: fork: Resource temporarily unavailable
Error: System generation failed.