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- make sure any extra dependencies, usually libgmp and/or libmpfr, *are* statically linked into the toolchain executables, since not everybody will have those as .so files on their system, or may have different, incompatible versions.
Yes, and those *I* was not able to properly build statically (yet!)... :-(
For that, I use something like the attached patch, which should apply cleanly to gcc 4.3.3, but most likely also to later versions.
After building the toolchain, you can check out the dependencies with ldd, for example:
$ ldd $TOOLCHAIN_ROOT/libexec/gcc/$TARGET_TRIPLET/4.3.3/cc1 linux-gate.so.1 => (0x00a5b000) libc.so.6 => /lib/libc.so.6 (0x00110000) /lib/ld-linux.so.2 (0x00996000)
So it only links dynamically with glibc, while it contains gmp and mpfr statically:
$ strings $TOOLCHAIN_ROOT/libexec/gcc/$TARGET_TRIPLET/4.3.3/cc1|grep -E "gmp|mpfr" real_from_mpfr mpfr_from_real |*p+>(__builtin_constant_p (1) && (1) == 0 ? (((S)->_mpfr_exp == ((mp_exp_t)((~((~(unsigned long)0)>>1))+1))) ? 0 : ((S)->_mpfr_sign)) : mpfr_cmp_ui_2exp ((S),(1),0)) < 0 !(((t)->_mpfr_exp) == (((-2147483647L - 1L))+2)) prec >= 2 && prec <= ((mpfr_prec_t)((mpfr_prec_t)(~(mpfr_prec_t)0)>>1)) p >= 2 && p <= ((mpfr_prec_t)((mpfr_prec_t)(~(mpfr_prec_t)0)>>1)) (((k)->_mpfr_exp) == ((((long) ((~ (unsigned long) 0) ^ ((unsigned long) (~ (unsigned long) 0) >> 1))))+1)) || ((k)->_mpfr_exp) <= 2 (!(((r)->_mpfr_exp) == ((((long) ((~ (unsigned long) 0) ^ ((unsigned long) (~ (unsigned long) 0) >> 1))))+2)) && !(((r)->_mpfr_exp) == ((((long) ((~ (unsigned long) 0) ^ ((unsigned long) (~ (unsigned long) 0) >> 1))))+3))) (((cache->x)->_mpfr_sign) > 0) ! (un < pn || (un == pn && __gmpn_cmp (up, pp, pn) < 0))
Attachment:
gcc-4.3.3-static-gmp-mpfr.diff
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