diff options
Diffstat (limited to 'm4/expl.m4')
| -rw-r--r-- | m4/expl.m4 | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/m4/expl.m4 b/m4/expl.m4 index c9c1b7b9ed..af60829fac 100644 --- a/m4/expl.m4 +++ b/m4/expl.m4 @@ -1,4 +1,4 @@ -# expl.m4 serial 4 +# expl.m4 serial 5 dnl Copyright (C) 2010-2011 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -7,6 +7,8 @@ dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_EXPL], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) + AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) + dnl Persuade glibc <math.h> to declare expl(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) @@ -56,8 +58,13 @@ AC_DEFUN([gl_FUNC_EXPL], HAVE_DECL_EXPL=0 HAVE_EXPL=0 dnl Find libraries needed to link lib/expl.c. - AC_REQUIRE([gl_FUNC_FLOORL]) - EXPL_LIBM="$FLOORL_LIBM" + if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then + AC_REQUIRE([gl_FUNC_EXP]) + EXPL_LIBM="$EXP_LIBM" + else + AC_REQUIRE([gl_FUNC_FLOORL]) + EXPL_LIBM="$FLOORL_LIBM" + fi fi AC_SUBST([EXPL_LIBM]) ]) |