Mercurial > gnulib
view m4/cbrt.m4 @ 17249:e542fd46ad6f
maint: update all copyright year number ranges
Run "make update-copyright". Compare to commit 1602f0a from last year.
Signed-off-by: Eric Blake <eblake@redhat.com>
author | Eric Blake <eblake@redhat.com> |
---|---|
date | Tue, 01 Jan 2013 00:50:58 +0000 |
parents | fdbe3125f81a |
children | 344018b6e5d7 |
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# cbrt.m4 serial 2 dnl Copyright (C) 2012-2013 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_CBRT], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) dnl Persuade glibc <math.h> to declare cbrt(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) dnl Determine CBRT_LIBM. gl_COMMON_DOUBLE_MATHFUNC([cbrt]) dnl Test whether cbrt() exists. save_LIBS="$LIBS" LIBS="$LIBS $CBRT_LIBM" AC_CHECK_FUNCS([cbrt]) LIBS="$save_LIBS" if test $ac_cv_func_cbrt = no; then HAVE_CBRT=0 dnl Find libraries needed to link lib/cbrt.c. AC_REQUIRE([gl_FUNC_FABS]) AC_REQUIRE([gl_FUNC_FREXP]) AC_REQUIRE([gl_FUNC_LDEXP]) CBRT_LIBM= dnl Append $FABS_LIBM to CBRT_LIBM, avoiding gratuitous duplicates. case " $CBRT_LIBM " in *" $FABS_LIBM "*) ;; *) CBRT_LIBM="$CBRT_LIBM $FABS_LIBM" ;; esac dnl Append $FREXP_LIBM to CBRT_LIBM, avoiding gratuitous duplicates. case " $CBRT_LIBM " in *" $FREXP_LIBM "*) ;; *) CBRT_LIBM="$CBRT_LIBM $FREXP_LIBM" ;; esac dnl Append $LDEXP_LIBM to CBRT_LIBM, avoiding gratuitous duplicates. case " $CBRT_LIBM " in *" $LDEXP_LIBM "*) ;; *) CBRT_LIBM="$CBRT_LIBM $LDEXP_LIBM" ;; esac fi ])