Strange problem with libc: undefined reference to `crypt'
15,283
Solution 1
Try adding '-lcrypt' after any objects used in linking; I've had a couple of instances where gcc would complain about crypt if -lcrypt wasn't near the end of the link list.
In other words, try something like:
gcc -D FOO -D BAR -W -Wall -pedantic -O2 foo.o bar.o -lnsl -lcrypt -o baz
as opposed to
gcc -D FOO -D BAR -W -Wall -pedantic -O2 -lnsl -lcrypt foo.o baz.o -o baz
Solution 2
undefined reference to 'crypt' is a linker error.
Try linking with -lcrypt : gcc ....-lcrypt
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sorush-r
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Updated on September 18, 2022Comments
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sorush-r almost 2 years
I moved from Archlinux to Kubuntu 12.04 yesterday.
I compiled buildroot 2012.08 on Archlinux without any problem. Though on Kubuntu
libcrypt
seems to be broken.sysvinit
can't find it anywhere.glibc-dev
and all dependencies are installed.How do I link to
libcrypt
? Or, which package containts that library?... bc-gcc sulogin.o -o sulogin sulogin.o: In function `main': sulogin.c:(.text+0x49d): undefined reference to `crypt' collect2: ld returned 1 exit status