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Date: Tue, 14 May 2013 11:00:57 -0400
From: Tim Prince <n8tm AT aol DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: Error building crossgcc on cygwin
References: <20130514140433 DOT GB24540 AT raven DOT wolf DOT lan>
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On 05/14/2013 10:04 AM, Josef Wolf wrote:
> Hello,
>
> I am trying to compile gcc on cygwin under 64bit win7
>
> To configure gcc, I use the following command:
>
>   /var/tmp/builds/crossgcc/src/gcc-4.7.2/configure \
>     --prefix=/usr/local/crossgcc \
>     --with-gmp=/usr/x86_64-pc-cygwin/sys-root/usr \
>     --with-mpc=/usr/x86_64-pc-cygwin/sys-root/usr \
>     --with-mpfr=/usr/x86_64-pc-cygwin/sys-root/usr \
>     --enable-install-libbfd \
>     --enable-languages=c \
>     --with-gnu-ld \
>     --with-gnu-as \
>     --with-newlib \
>     --enable-commonbfdlib \
>     --enable-multilib \
>     --enable-interwork \
>     --disable-libssp \
>     --nfp \
>     --gas \
>     -v \
>     --target=arm-none-eabi \
>     --with-cpu=cortex-m3 \
>     --with-tune=cortex-m3 \
>     --with-mode=thumb \
>     --with-float=soft \
>     --disable-nls \
>     --without-headers
>
> But configure complains that it can't find gmp, mpc and mpfr. Here is the
> relevant part of the config.log file. Any ideas? The whole cponfig.log is
> appended at the end of this mail.
>
>

cygwin native installations of those tools won't help with a non-cygwin 
target.
Maybe this would be more suitable for gcc-help.  In particular, you 
might give attention to the download-prerequisites.

-- 
Tim Prince


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