Re: Cross Compiling RCS

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The configure and compile worked just fine.

The only problem I still have is that it is doing the check for the sane
diff.

The situation I have is that I needed to cross compile diff utils to bundle
with rcs and I plan on running diff utils and rcs out of /opt/rcs.
./configure --prefix=/opt/rcs --host=i386-pc-solaris2.10

I have set the environment variables DIFF and DIFF3 and when it checks DIFF
it turns out it doesn't work because /opt/rcs/bin/diff is a solaris binary
on a windows machine. It then finds /usr/bin/diff and it's sane so it uses
this.

However, on the target platform /usr/bin/diff is not gnu diff, it's Solaris
diff so it doesn't work as expected.


configure:4364: checking if /opt/rcs/bin/diff works like GNU diff
configure:4383: result: no
configure:4398: checking if gdiff works like GNU diff
configure:4417: result: no
configure:4431: checking if rdiff works like GNU diff
configure:4450: result: no
configure:4464: checking if diff works like GNU diff
configure:4483: result: yes
configure:4501: checking for diff
configure:4519: found /usr/bin/diff
configure:4532: result: /usr/bin/diff
configure:4558: checking diff success status
configure:4568: result: 0
configure:4577: checking diff failure status
configure:4587: result: 1
configure:4596: checking diff trouble status
configure:4606: result: 2
configure:4617: checking diff options for RCS
configure:4633: result: -an
configure:4642: checking if diff understands --label
configure:4668: result: yes


I originally worked around this problem by modifying configure.ac so that
in the case of a cross compile, if DIFF and DIFF2 environment variables
were set, assume that the user knows what they are doing.

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<div dir=3D"ltr"><div><div><div><div><div><br></div>The configure and compi=
le worked just fine.<br><br>The only problem I still have is that it is doi=
ng the check for the sane diff. <br><br></div>The situation I have is that =
I needed to cross compile diff utils to bundle with rcs and I plan on runni=
ng diff utils and rcs out of /opt/rcs.<br>

</div>./configure --prefix=3D/opt/rcs --host=3Di386-pc-solaris2.10<br><br><=
/div>I have set the environment variables DIFF and DIFF3 and when it checks=
 DIFF it turns out it doesn&#39;t work because /opt/rcs/bin/diff is a solar=
is binary on a windows machine. It then finds /usr/bin/diff and it&#39;s sa=
ne so it uses this.<br>

<br>However, on the target platform /usr/bin/diff is not gnu diff, it&#39;s=
 Solaris diff so it doesn&#39;t work as expected.<br><br></div><div><br>con=
figure:4364: checking if /opt/rcs/bin/diff works like GNU diff<br>configure=
:4383: result: no<br>

configure:4398: checking if gdiff works like GNU diff<br>configure:4417: re=
sult: no<br>configure:4431: checking if rdiff works like GNU diff<br>config=
ure:4450: result: no<br>configure:4464: checking if diff works like GNU dif=
f<br>

configure:4483: result: yes<br>configure:4501: checking for diff<br>configu=
re:4519: found /usr/bin/diff<br>configure:4532: result: /usr/bin/diff<br>co=
nfigure:4558: checking diff success status<br>configure:4568: result: 0<br>

configure:4577: checking diff failure status<br>configure:4587: result: 1<b=
r>configure:4596: checking diff trouble status<br>configure:4606: result: 2=
<br>configure:4617: checking diff options for RCS<br>configure:4633: result=
: -an<br>

configure:4642: checking if diff understands --label<br>configure:4668: res=
ult: yes<br><br><div><div><br></div><div>I originally worked around this pr=
oblem by modifying <a href=3D"http://configure.ac">configure.ac</a> so that=
 in the case of a cross compile, if DIFF and DIFF2 environment variables we=
re set, assume that the user knows what they are doing.<br>

</div><div><div><div><br><div class=3D"gmail_extra"><br></div></div></div><=
/div></div></div></div>

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