a little help please :)

[robywijaya007]

hello alberto , i tried to make compile but it was going error gcc -O3 -c gmpecc.c -o gmpecc.o gcc -O3 -c util.c -o util.o gcc -o keysubtracter keysubtracter.c gmpecc.o util.o -lgmp /usr/bin/ld: gmpecc.o:(.bss+0x2020): multiple definition of EC'; /tmp/ccmOxZkI.o:(.bss+0x0): first defined here /usr/bin/ld: gmpecc.o:(.bss+0x0): multiple definition ofDoublingG'; /tmp/ccmOxZkI.o:(.bss+0x40): first defined here /usr/bin/ld: gmpecc.o:(.bss+0x2000): multiple definition of `G'; /tmp/ccmOxZkI.o:(.bss+0x20): first defined here collect2: error: ld returned 1 exit status make: *** [Makefile:4: default] Error 1

please help Best regards

[albertobsd]

please add more details of your system, Linux version, Gcc Version.

[robywijaya007]

Dear Alberto, Thank you for your kind reply , gcc version 10.2.0 running on Ubuntu 20.10 groovy . Kind regards

[albertobsd]

@we-akri install libgmpdev

[we-akri]

Thank you Kind regards