On 26 Nov 2016 17:06, Mike Frysinger wrote: > On 27 Nov 2016 01:06, Torbjörn Granlund wrote: > > Mike Frysinger <[email protected]> writes: > > > > building gmp-6.1.0 & gmp-6.1.1 like so: > > ./configure \ > > --build=s390-ibm-linux-gnu --host=s390-ibm-linux-gnu \ > > --enable-shared --disable-assembly --enable-cxx --disable-static > > > > triggers this warning: > > udiv_w_sdiv.c: In function ‘__gmpn_udiv_w_sdiv’: > > udiv_w_sdiv.c:58:4: warning: implicit declaration of function > > ‘sdiv_qrnnd’ [-Wimplicit-function-declaration] > > sdiv_qrnnd (q, r, a1, a0, d); > > > > and the final lib has an undefined ref to the sdiv_qrnnd symbol. > > > > Please try this https://gmplib.org/repo/gmp/rev/1890de258348 and comment > > back. > > it seemed to fix my builds. thanks!
turns out, this causes problems too :( now the __gmpn_udiv_w_sdiv symbol is exported based on the asm configure flag. mpfr will link against it if it's available, and if you rebuild gmp w/asm disabled, then mpfr is left in a broken state until it gets rebuilt. this can be a problem when gcc itself relies on gmp/mpfr now :). here's gmp-6.1.0 built w/--enable-asm: $ readelf -sW /usr/lib/libgmp.so | grep udiv_w_sdiv 439: 00025538 366 FUNC GLOBAL DEFAULT 10 __gmpn_udiv_w_sdiv here it's built w/--disable-asm: $ readelf -sW /usr/lib/libgmp.so | grep udiv_w_sdiv <nothing> -mike
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