diff options
| author | vlefevre <vlefevre@280ebfd0-de03-0410-8827-d642c229c3f4> | 2012-09-04 13:19:54 +0000 |
|---|---|---|
| committer | vlefevre <vlefevre@280ebfd0-de03-0410-8827-d642c229c3f4> | 2012-09-04 13:19:54 +0000 |
| commit | b86e4d733c2c3caefa45f7981600e8ee8486e141 (patch) | |
| tree | c37951db162b0489ca4bd8e4ac7684293d30469b /configure.ac | |
| parent | 08249c6741dc5687a6d40904e09f868b7f3ad976 (diff) | |
| download | mpfr-b86e4d733c2c3caefa45f7981600e8ee8486e141.tar.gz | |
[configure.ac] Improved error message when the compiler doesn't know
_Decimal64 (if MPFR is built with --enable-decimal-float).
git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@8415 280ebfd0-de03-0410-8827-d642c229c3f4
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/configure.ac b/configure.ac index 8ae3bdb6f..85273e793 100644 --- a/configure.ac +++ b/configure.ac @@ -236,8 +236,12 @@ AC_PROG_CC AC_PROG_CPP AC_LANG(C) -dnl _Decimal64 is not defined in C++ -dnl cf http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51364 +dnl For GCC, _Decimal64 was introduced in GCC 4.3 for some targets +dnl (note that it is not guaranteed to be available because it may +dnl be disabled in the GCC build). See: +dnl http://gcc.gnu.org/gcc-4.3/changes.html +dnl _Decimal64 is not yet defined in GCC for C++: +dnl http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51364 AC_ARG_ENABLE(decimal-float, [ --enable-decimal-float build conversion functions from/to decimal floats [[default=no]]], @@ -247,8 +251,10 @@ AC_ARG_ENABLE(decimal-float, AC_MSG_CHECKING(if compiler knows _Decimal64) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[_Decimal64 x;]])], [AC_MSG_RESULT(yes)], - [AC_MSG_ERROR([Compiler doesn't know _Decimal64; try GCC >= 4.4.3] - )]) + [AC_MSG_RESULT(no) +AC_MSG_ERROR([Compiler doesn't know _Decimal64 (ISO/IEC TR 24732). +Please use another compiler or build MPFR without --enable-decimal-float.])] + ) AC_MSG_CHECKING(decimal float format) AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include <stdlib.h> |