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Re: Math.h error "long double" compile flag?
- From: nirav dot dalal at teradyne dot com
- To: gcc-help at gcc dot gnu dot org
- Cc: Eljay Love-Jensen <eljay at adobe dot com>
- Date: Tue, 24 Feb 2004 14:32:13 -0500
- Subject: Re: Math.h error "long double" compile flag?
Thanks Eljay,
I tried using this:
$ g++ foo.cpp -mno-cygwin -mdll -DBUILD_DLL -O3 -c -fno-exceptions
-ffast-math
and got the same errors as before.
Now in foo.cpp, I had math.h included as:
#include "c:/mingw/include/math.h"
Also the GCC version I'm using is
$ g++ --version
g++ (GCC) 3.3.1 (mingw special 20030804-1)
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
At this point, I'm not sure whats wrong. Any more clue?
Thanks,
- Nirav
Eljay
Love-Jensen To: nirav.dalal@teradyne.com, gcc-help@gcc.gnu.org
<eljay@adobe.com cc:
> Subject: Re: Math.h error "long double" compile flag?
02/24/2004 01:56
PM
Hi Nirav,
You cannot use "-c" and "-lm" together, as the "-c" makes the "-lm"
semantically void.
You cannot use "-m96bit-long-double" and "-m128bit-long-double" together,
as they are mutually exclusive.
For C++ you should use "g++", for C you should use "gcc".
Other than that...
$ g++ foo.cpp -mno-cygwin -mdll -DBUILD_DLL -O3 -c -fno-exceptions
-ffast-math
...worked for me just fine.
$ g++ --version
g++ (GCC) 3.3.1 (cygming special)
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Are you using GCC/Mingw32 3.3.1? Or 3.4.0?
--Eljay