On Tue, Jul 2, 2019 at 12:41 PM Torbjörn Granlund <t...@gmplib.org> wrote: > > Richard Biener <richard.guent...@gmail.com> writes: > > On Mon, Jul 1, 2019 at 11:13 PM Torbjörn Granlund <t...@gmplib.org> wrote: > > > > Vincent Lefevre <vinc...@vinc17.net> writes: > > > > Yes, with LTO, the object file does not contain the structure as is. > > Thus the detection from "od -b conftest.$OBJEXT" does not work. > > > > That could be solved by generating a final executable, right? > > > Yes. > > Does the patch below make sense? > > The main funcion is needed as we create an executable, its references to > foo are needed, else LTO will remove foo altogether.
Yes, this should work. It probably has a slightly higher chance of mismatching the start/end patterns elsewhere in the file, but well... Richard. > *** /tmp/extdiff.MsIr0g/gmp-main.3300fbb5d615/acinclude.m4 Mon Jun 17 > 00:11:50 2019 > --- /home/tege/prec/gmp-main/acinclude.m4 Tue Jul 2 12:37:53 2019 > *************** > *** 3307,3313 **** > -123456789.0, > { '\376', '\334', '\272', '\230', '\166', '\124', '\062', '\020' }, > ! };] > EOF > ! gmp_compile="$CC $CFLAGS $CPPFLAGS -c conftest.c >&AC_FD_CC 2>&1" > if AC_TRY_EVAL(gmp_compile); then > cat >conftest.awk <<\EOF > --- 3307,3320 ---- > -123456789.0, > { '\376', '\334', '\272', '\230', '\166', '\124', '\062', '\020' }, > ! }; > ! int main(){ > ! int i; > ! for (i = 0; i < 8; i++) { > ! printf ("%d %d %f\n", foo.before[i] + foo.after[i], foo.x); > ! } > ! return 0; > ! }] > EOF > ! gmp_compile="$CC $CFLAGS $CPPFLAGS conftest.c -o conftest >&AC_FD_CC 2>&1" > if AC_TRY_EVAL(gmp_compile); then > cat >conftest.awk <<\EOF > *************** > *** 3462,3470 **** > ] > EOF > ! gmp_cv_c_double_format=`od -b conftest.$OBJEXT | $AWK -f conftest.awk` > case $gmp_cv_c_double_format in > unknown*) > ! echo "cannot match anything, conftest.$OBJEXT contains" >&AC_FD_CC > ! od -b conftest.$OBJEXT >&AC_FD_CC > ;; > esac > --- 3469,3477 ---- > ] > EOF > ! gmp_cv_c_double_format=`od -b conftest | $AWK -f conftest.awk` > case $gmp_cv_c_double_format in > unknown*) > ! echo "cannot match anything, conftest contains" >&AC_FD_CC > ! od -b conftest >&AC_FD_CC > ;; > esac > > > -- > Torbjörn > Please encrypt, key id 0xC8601622 _______________________________________________ gmp-bugs mailing list gmp-bugs@gmplib.org https://gmplib.org/mailman/listinfo/gmp-bugs