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Subject: Re: Unable to successfully include cstdlib.h in gcc-g++-4.9.3-1
To: cygwin@cygwin.com
References: <CAHvsuxkFrRn4_Z4NWCT_17csKUo_fFvYhVTCb2bg1BwW_ZwqaA@mail.gmail.com>
From: Marco Atzeri <marco.atzeri@gmail.com>
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Date: Wed, 23 Dec 2015 07:37:32 +0100
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On 23/12/2015 04:30, ravi r wrote:
> When the configure script of RQuantLib package tries to check for boost
> development files by compiling this program
>
>          $ cat > /tmp/conftest.cpp <<-EOF
>          #include <boost/version.hpp>
>          #include <boost/shared_ptr.hpp>
>          #include <boost/assert.hpp>
>          #include <boost/current_function.hpp>
>
>          int main () {
>                  ;
>                  return 0;
>          }
>          EOF
>
> it gets this error
>
>          $ g++ -m32 -c -O2 -Wall -mtune=3Dcore2  -I/usr/local/include -fpermissiv
> e
>           /tmp/conftest.cpp


why "/usr/local/include" and not "/usr/include" ?
You should use the libboost-devel header package

>
> This is on a 64 bit cygwin installation over windows 7.
>
> The definition in cstdlib.h which is source of the problem is
>      177 #if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_INT128)
>      178   inline __int128
>      179   abs(__int128 __x) { return __x >=3D 0 ? __x : -__x; }
>      180 #endif
>
> I have cygwin package libboost-devel-1.58.0-1 installed.

but you are not using it...


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