Linux failed project calculator

[ItamarLins]

Linux OS. gcc version 15.2.0 (Ubuntu 15.2.0-16ubuntu1)
.
[1] Saving project files...
Form1.prg
[2] Building main.prg...
[3] Compiling main.prg...
OK
[4] Compiling framework...
OK
[5] Compiling C sources...
OK
[6] Compiling GTK3 backend...
OK
[7] Linking...
FAILED:
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TCONTROL': classes.c:(.text+0x17e0): multiple definition of HB_FUN_TCONTROL'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1820): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TFORM': classes.c:(.text+0x1800): multiple definition of HB_FUN_TFORM'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1840): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TLABEL': classes.c:(.text+0x1820): multiple definition of HB_FUN_TLABEL'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1860): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TEDIT': classes.c:(.text+0x1840): multiple definition of HB_FUN_TEDIT'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1880): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TMEMO': classes.c:(.text+0x1860): multiple definition of HB_FUN_TMEMO'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x18a0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TBUTTON': classes.c:(.text+0x1880): multiple definition of HB_FUN_TBUTTON'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x18c0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TCHECKBOX': classes.c:(.text+0x18a0): multiple definition of HB_FUN_TCHECKBOX'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x18e0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TCOMBOBOX': classes.c:(.text+0x18c0): multiple definition of HB_FUN_TCOMBOBOX'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1900): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TGROUPBOX': classes.c:(.text+0x18e0): multiple definition of HB_FUN_TGROUPBOX'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1920): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TRADIOBUTTON': classes.c:(.text+0x1900): multiple definition of HB_FUN_TRADIOBUTTON'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1940): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TLISTBOX': classes.c:(.text+0x1920): multiple definition of HB_FUN_TLISTBOX'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1960): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TBRWCOLUMN': classes.c:(.text+0x1940): multiple definition of HB_FUN_TBRWCOLUMN'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1980): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TBROWSE': classes.c:(.text+0x1960): multiple definition of HB_FUN_TBROWSE'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x19a0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TTIMER': classes.c:(.text+0x1980): multiple definition of HB_FUN_TTIMER'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x19c0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TCOMPARRAY': classes.c:(.text+0x19a0): multiple definition of HB_FUN_TCOMPARRAY'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x19e0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TCOMPONENTPALETTE': classes.c:(.text+0x19c0): multiple definition of HB_FUN_TCOMPONENTPALETTE'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1a00): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TTOOLBAR': classes.c:(.text+0x19e0): multiple definition of HB_FUN_TTOOLBAR'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1a20): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TMENUPOPUP': classes.c:(.text+0x1a00): multiple definition of HB_FUN_TMENUPOPUP'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1a40): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TAPPLICATION': classes.c:(.text+0x1a20): multiple definition of HB_FUN_TAPPLICATION'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1a60): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TDATASOURCE': classes.c:(.text+0x1a40): multiple definition of HB_FUN_TDATASOURCE'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1a80): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TDBCONTROL': classes.c:(.text+0x1a60): multiple definition of HB_FUN_TDBCONTROL'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1aa0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TDBTEXT': classes.c:(.text+0x1a80): multiple definition of HB_FUN_TDBTEXT'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1ac0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TDBEDIT': classes.c:(.text+0x1aa0): multiple definition of HB_FUN_TDBEDIT'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1ae0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TDBCOMBOBOX': classes.c:(.text+0x1ac0): multiple definition of HB_FUN_TDBCOMBOBOX'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1b00): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TDBCHECKBOX': classes.c:(.text+0x1ae0): multiple definition of HB_FUN_TDBCHECKBOX'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1b20): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TDBNAVIGATOR': classes.c:(.text+0x1b00): multiple definition of HB_FUN_TDBNAVIGATOR'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1b40): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_MSGINFO': classes.c:(.text+0x1b20): multiple definition of HB_FUN_MSGINFO'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1b60): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_MSGYESNO': classes.c:(.text+0x1b40): multiple definition of HB_FUN_MSGYESNO'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1b80): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TDATABASE': classes.c:(.text+0x1b60): multiple definition of HB_FUN_TDATABASE'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1ba0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TDBFTABLE': classes.c:(.text+0x1b80): multiple definition of HB_FUN_TDBFTABLE'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1bc0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TSQLITE': classes.c:(.text+0x1ba0): multiple definition of HB_FUN_TSQLITE'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1be0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TMYSQL': classes.c:(.text+0x1bc0): multiple definition of HB_FUN_TMYSQL'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1c00): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TMARIADB': classes.c:(.text+0x1be0): multiple definition of HB_FUN_TMARIADB'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1c20): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TPOSTGRESQL': classes.c:(.text+0x1c00): multiple definition of HB_FUN_TPOSTGRESQL'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1c40): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TFIREBIRD': classes.c:(.text+0x1c20): multiple definition of HB_FUN_TFIREBIRD'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1c60): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TSQLSERVER': classes.c:(.text+0x1c40): multiple definition of HB_FUN_TSQLSERVER'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1c80): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TORACLE': classes.c:(.text+0x1c60): multiple definition of HB_FUN_TORACLE'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1ca0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TMONGODB': classes.c:(.text+0x1c80): multiple definition of HB_FUN_TMONGODB'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1cc0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TPRINTER': classes.c:(.text+0x1ca0): multiple definition of HB_FUN_TPRINTER'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1ce0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TREPORT': classes.c:(.text+0x1cc0): multiple definition of HB_FUN_TREPORT'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1d00): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TWEBSERVER': classes.c:(.text+0x1ce0): multiple definition of HB_FUN_TWEBSERVER'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1d20): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_THTTPCLIENT': classes.c:(.text+0x1d00): multiple definition of HB_FUN_THTTPCLIENT'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1d40): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TTHREAD': classes.c:(.text+0x1d20): multiple definition of HB_FUN_TTHREAD'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1d60): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TMUTEX': classes.c:(.text+0x1d40): multiple definition of HB_FUN_TMUTEX'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1d80): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TCHANNEL': classes.c:(.text+0x1d60): multiple definition of HB_FUN_TCHANNEL'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1da0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TREPORTBAND': classes.c:(.text+0x1d80): multiple definition of HB_FUN_TREPORTBAND'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1dc0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TREPORTFIELD': classes.c:(.text+0x1da0): multiple definition of HB_FUN_TREPORTFIELD'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1de0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_RPT_NEWTEXTFIELD': classes.c:(.text+0x1dc0): multiple definition of HB_FUN_RPT_NEWTEXTFIELD'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1e00): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_RPT_NEWDATAFIELD': classes.c:(.text+0x1de0): multiple definition of HB_FUN_RPT_NEWDATAFIELD'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1e20): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TOPENDIALOG': classes.c:(.text+0x1e00): multiple definition of HB_FUN_TOPENDIALOG'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1e40): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TSAVEDIALOG': classes.c:(.text+0x1e20): multiple definition of HB_FUN_TSAVEDIALOG'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1e60): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TFONTDIALOG': classes.c:(.text+0x1e40): multiple definition of HB_FUN_TFONTDIALOG'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1e80): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TCOLORDIALOG': classes.c:(.text+0x1e60): multiple definition of HB_FUN_TCOLORDIALOG'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1ea0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TFINDDIALOG': classes.c:(.text+0x1e80): multiple definition of HB_FUN_TFINDDIALOG'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1ec0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_TREPLACEDIALOG': classes.c:(.text+0x1ea0): multiple definition of HB_FUN_TREPLACEDIALOG'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1ee0): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/classes.o: in function HB_FUN_HB_CREATECOMPONENT': classes.c:(.text+0x1ec0): multiple definition of HB_FUN_HB_CREATECOMPONENT'; /tmp/hbbuilder_build/main.o:main.c:(.text+0x1f00): first defined here
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/main.o:(.data.rel+0x30): undefined reference to HB_FUN_FORM1' /usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/hbbuilder_build/main.o:(.data.rel+0x4370): undefined reference to HB_FUN_HB_GT_GUI_DEFAULT'
collect2: error: ld returned 1 exit status

Best regards,
Itamar M. Lins Jr.