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Date: Mon, 23 Mar 2009 15:05:13 -0500
Message-ID: <75cc17ac0903231305yb0ec066kefddbb24fdbcd986@mail.gmail.com>
Subject: Re: strtold, isnormal
From: Gregg Reynolds <dev AT mobileink DOT com>
To: cygwin AT cygwin DOT com
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On Mon, Mar 23, 2009 at 10:49 AM, Corinna Vinschen
<corinna-cygwin AT cygwin DOT com> wrote:
> On Mar 23 16:44, Corinna Vinschen wrote:
>> On Mar 23 10:40, Gregg Reynolds wrote:
>> > Hi,
>> >
>> > I'm trying to build tokyocabinet on cygwin. =C2=A0It needs strtold and=
 the
>> > isnormal macro. =C2=A0Before I hack up an ad-hoc fix are there any pla=
ns to
>> > implement these for cygwin?
>>
>> Not yet. =C2=A0The reason is that Cygwin's underlying math library (part
>> of newlib), does not handle long doubles at all so far. =C2=A0That's why
>> we have none of the long double functions like cosl etc.
>
> Oh, btw., the isnormal macro exists in math.h.

Thanks.  But for some reason it's not getting picked up:

gcc -c -I. -I/usr/local/include -I/home/reynolds-gregg/include
-I/usr/local/include -DNDEBUG -D_GNU_SOURCE=3D1 -D_REENTRANT
-D__EXTENSIONS__ -D_TC_PREFIX=3D"\"/usr/local\""
-D_TC_INCLUDEDIR=3D"\"/usr/local/include\""
-D_TC_LIBDIR=3D"\"/usr/local/lib\"" -D_TC_BINDIR=3D"\"/usr/local/bin\""
-D_TC_LIBEXECDIR=3D"\"/usr/local/libexec\""
-D_TC_APPINC=3D"\"-I/usr/local/include\""
-D_TC_APPLIBS=3D"\"-L/usr/local/lib -ltokyocabinet -lbz2 -lz -lpthread
-lm -lc \"" -I/usr/include -std=3Dc99 -Wall -fPIC -fsigned-char -O2
tcutil.c

result:

tcutil.c:4948: warning: implicit declaration of function `isnormal'

and then

tcutil.o:tcutil.c:(.text+0x2889): undefined reference to `_isnormal'

If I run cpp -dDI tcutil.c it shows the macro included and substituted prop=
erly.

I can't see anything in the source that would account for this.  Any
idea what's happening?

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