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This article introduces the knowledge about "how to solve OpenCASCADE 6.3.0 compilation errors". In the actual case operation process, many people will encounter such difficulties. Next, let Xiaobian lead you to learn how to deal with these situations! I hope you can read carefully and learn something!

When compiling OpenCASCADE 6.3.0 under Linux, it appears:

g++ -DHAVE_CONFIG_H -I. -I. -I../../.. -I../../../ inc -I../../../ drv/EDL -I../../../ src/EDL -I../../../ drv/MS -I../../../ src/MS -I../../../ drv/WOKAPI -I../../../ src/WOKAPI -I../../../ drv/WOKBuilder -I../../../ src/WOKBuilder -I../../../ drv/WOKDFLT -I../../../ src/WOKDFLT -I../../../ drv/WOKDeliv -I../../../ src/WOKDeliv -I../../../ drv/WOKMake -I../../../ src/WOKMake -I../../../ drv/WOKOBJS -I../../../ src/WOKOBJS -I../../../ drv/WOKOrbix -I../../../ src/WOKOrbix -I../../../ drv/WOKStep -I../../../ src/WOKStep -I../../../ drv/WOKTools -I../../../ src/WOKTools -I../../../ drv/WOKUnix -I../../../ src/WOKUnix -I../../../ drv/WOKUtils -I../../../ src/WOKUtils -I../../../ drv/WOKernel -I../../../ src/WOKernel -DNDEBUG -DNo_Exception -O2 -g -m32 -march=i586 -mtune=i686 -fmessage-length=0 -D_FORTIFY_SOURCE=2 -ffriend-injection -fpermissive -DCSFDB -DOCC_CONVERT_SIGNALS -DLIN -DLININTEL -D_GNU_SOURCE=1 -O2 -MT WOKUnix_FDescr.lo -MD -MP -MF .deps/WOKUnix_FDescr.Tpo -c ../../../ src/WOKUnix/WOKUnix_FDescr.cxx -fPIC -DPIC -o WOKUnix_FDescr.lo../../../ src/WOKUnix/WOKUnix_FDescr.cxx: In member function 'void WOKUnix_FDescr::Dup()':../../../ src/WOKUnix/WOKUnix_FDescr.cxx:249: warning: ignoring return value of 'int dup(int)', declared with attribute warn_unused_result../../../ src/WOKUnix/WOKUnix_FDescr.cxx: In member function 'Handle_TCollection_HAsciiString WOKUnix_FDescr::ReadLine()':../../../ src/WOKUnix/WOKUnix_FDescr.cxx:355: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result../../../ src/WOKUnix/WOKUnix_FDescr.cxx: In function 'FILE* _wokunix_fdopen(int)':../../../ src/WOKUnix/WOKUnix_FDescr.cxx:436: warning: deprecated conversion from string constant to 'char*'../../../ src/WOKUnix/WOKUnix_FDescr.cxx:443: warning: deprecated conversion from string constant to 'char*'../../../ src/WOKUnix/WOKUnix_FDescr.cxx:449: warning: deprecated conversion from string constant to 'char*'In function 'int open(const char*, int, ...) ',inlined from 'WOKUnix_FDescr WOKUnix_FDescr::BuildNamedPipe()' at ../../../ src/WOKUnix/WOKUnix_FDescr.cxx:205:/usr/include/bits/fcntl2.h:51: error: call to '__open_missing_mode' declared with attribute error: open with O_CREAT in second argument needs 3 argumentsmake[3]: *** [WOKUnix_FDescr.lo] Error 1make[3]: Leaving directory `/home/anubis/src/rpm/BUILD/OpenCASCADE6.3.0/ros/adm/make/TKWOK'make[2]: *** [all-recursive] Error 1make[2]: Leaving directory `/home/anubis/src/rpm/BUILD/OpenCASCADE6.3.0/ros/adm/make'make[1]: *** [all-recursive] Error 1make[1]: Leaving directory `/home/anubis/src/rpm/BUILD/OpenCASCADE6.3.0/ros'make: *** [all] Error 2

Notice the error in the function body BuildNamedPipe. Find solutions on forums

Just modify the 205 behavior of ros/src/WOKUnix/WOKUnix_FDescr.cxx:

myFileChannel = open(apath.ToCString(), O_RDONLY | O_NDELAY | O_CREAT, S_IRUSR);

can

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