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Thread: C - can't compile Chudnovsky's algorithm

  1. #1
    Join Date
    Apr 2009
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    C - can't compile Chudnovsky's algorithm

    Just started messing around with a few GMP programs with some success. However when I try to compile https://gmplib.org/download/misc/gmp-chudnovsky.c I get the following errors:
    Code:
    Compiling with:
    $ c99 -s -Wall -o gmp-chudnovsky gmp-chudnovsky.c -lgmp
    
    Gives these errors:
    /tmp/ccT9ALjH.o: In function `my_sqrt_ui':
    gmp-chudnovsky.c:(.text+0xc0): undefined reference to `sqrt'
    gmp-chudnovsky.c:(.text+0x151): undefined reference to `sqrt'
    /tmp/ccT9ALjH.o: In function `fac_remove_gcd':
    gmp-chudnovsky.c:(.text+0x53c): undefined reference to `fac_resize'
    gmp-chudnovsky.c:(.text+0x784): undefined reference to `fac_compact'
    gmp-chudnovsky.c:(.text+0x790): undefined reference to `fac_compact'
    /tmp/ccT9ALjH.o: In function `bs':
    gmp-chudnovsky.c:(.text+0xafe): undefined reference to `fac_set_bp'
    gmp-chudnovsky.c:(.text+0xb25): undefined reference to `fac_mul_bp'
    gmp-chudnovsky.c:(.text+0xb78): undefined reference to `fac_set_bp'
    gmp-chudnovsky.c:(.text+0xbb1): undefined reference to `fac_mul_bp'
    gmp-chudnovsky.c:(.text+0xbea): undefined reference to `fac_mul_bp'
    gmp-chudnovsky.c:(.text+0xf46): undefined reference to `fac_mul'
    gmp-chudnovsky.c:(.text+0xfd7): undefined reference to `fac_mul'
    /tmp/ccT9ALjH.o: In function `build_sieve':
    gmp-chudnovsky.c:(.text+0x1086): undefined reference to `sqrt'
    /tmp/ccT9ALjH.o: In function `main':
    gmp-chudnovsky.c:(.text+0x15ff): undefined reference to `fac_init'
    gmp-chudnovsky.c:(.text+0x1619): undefined reference to `fac_init'
    gmp-chudnovsky.c:(.text+0x1640): undefined reference to `fac_init'
    gmp-chudnovsky.c:(.text+0x164a): undefined reference to `fac_init'
    gmp-chudnovsky.c:(.text+0x1771): undefined reference to `fac_clear'
    gmp-chudnovsky.c:(.text+0x177b): undefined reference to `fac_clear'
    gmp-chudnovsky.c:(.text+0x17f0): undefined reference to `fac_clear'
    gmp-chudnovsky.c:(.text+0x180a): undefined reference to `fac_clear'
    gmp-chudnovsky.c:(.text+0x183b): undefined reference to `fac_clear'
    /tmp/ccT9ALjH.o:gmp-chudnovsky.c:(.text+0x184a): more undefined references to `fac_clear' follow
    collect2: ld returned 1 exit status
    Last edited by donsy; March 4th, 2014 at 03:14 PM.

  2. #2
    Join Date
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    Re: C - can't compile Chudnovsky's algorithm

    That source uses inline in a way that requires GNU extensions that are not compatible with C99. Also, you need the math library for sqrt. Hence,
    Code:
    gcc -s -Wall -o gmp-chudnovsky gmp-chudnovsky.c -lgmp -lm

  3. #3
    Join Date
    Apr 2009
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    268
    Distro
    Xubuntu 16.04 Xenial Xerus

    Re: C - can't compile Chudnovsky's algorithm

    Thank you.

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