39 строки
1.0 KiB
Bash
39 строки
1.0 KiB
Bash
dnl -*- shell-script -*-
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dnl
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dnl $HEADER$
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dnl
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AC_DEFUN([OMPI_C_GET_ALIGNMENT],[
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# Determine datatype alignment.
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# First arg is type, 2nd arg is config var to define.
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AC_MSG_CHECKING([alignment of $1])
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AC_TRY_RUN([
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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struct foo { char c; $1 x; };
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int main(int argc, char* argv[])
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{
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struct foo *p = (struct foo *) malloc(sizeof(struct foo));
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int diff;
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FILE *f=fopen("conftestval", "w");
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if (!f) exit(1);
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diff = ((char *)&p->x) - ((char *)&p->c);
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fprintf(f, "%d\n", (diff >= 0) ? diff : -diff);
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return 0;
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}],[ompi_ac_align=`cat conftestval`],[ompi_ac_align=-1],[ompi_ac_align=-1])
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if test "`expr $ompi_ac_align \<= 0`" = "1"; then
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AC_MSG_WARN([*** Problem running configure test!])
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AC_MSG_WARN([*** See config.log for details.])
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AC_MSG_ERROR([*** Cannot continue.])
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fi
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AC_MSG_RESULT([$ompi_ac_align])
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AC_DEFINE_UNQUOTED($2, $ompi_ac_align, [Alignment of type $1])
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eval "$2=$ompi_ac_align"
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unset ompi_ac_align
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/bin/rm -f conftest*])dnl
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