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| Date: | Sun, 15 Mar 2015 11:08:51 +0100 |
| Message-ID: | <CAEhDDbCDdWbXNR5SAx=SZyR1_OcngC6d=3kVmjxyR7_Ukx5G8g@mail.gmail.com> |
| Subject: | Re: GCC / make escaping differences |
| From: | Csaba Raduly <rcsaba AT gmail DOT com> |
| To: | cygwin list <cygwin AT cygwin DOT com> |
| Cc: | Achim Gratz <Stromeko AT nexgo DOT de> |
| X-MIME-Autoconverted: | from quoted-printable to 8bit by delorie.com id t2FA993U005914 |
Hi Denis, On Fri, Mar 13, 2015 at 12:20 PM, Denis Washington wrote: > Achim Gratz writes: >> Denis Washington <denis <at> denisw.de> writes: >> > I suspected that this had something to do with the gcc command defined in >> the Makefile, which includes >> > backslashes to escape quotes in -D values like this: >> > >> > -DNOKOGIRI_LIBXML2_PATH\=\"/home/.../2.9.2\" >> -----------------------------^ >> >> I'd rather suspect the problem here. > > Maybe, but in my eyes that wouldn't explain why this is a GCC compilation error at the line where NOKOGIRI_LIBXML2_PATH is expanded, rather than an shell syntax error. Also, \= seems to cause no problem when passed to bash, as explained. > > FYI, my understanding from looking at Nokogiri's extconf.rb (which generates the Makefile) is that the escaping is the result of calling Ruby's Shellwords#shellescape method [1] on the string '-DNOKOGIRI="/home/.../2.9.2"', so I guess one can assume that the result is valid bourne shell syntax. > > Regards, > Denis > > [1] http://ruby-doc.org/stdlib-1.9.3/libdoc/shellwords/rdoc/Shellwords.html#method-c-shellescape > If you are really curious, you can add the -save-temps switch to the gcc command line. Then you can look at the nokogiri.i and see exactly what the compiler saw. Csaba -- GCS a+ e++ d- C++ ULS$ L+$ !E- W++ P+++$ w++$ tv+ b++ DI D++ 5++ The Tao of math: The numbers you can count are not the real numbers. Life is complex, with real and imaginary parts. "Ok, it boots. Which means it must be bug-free and perfect. " -- Linus Torvalds "People disagree with me. I just ignore them." -- Linus Torvalds -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
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