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POUsing `pkg-config` as command line argument under cygwin/msys bash
 

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  1. POUsing `pkg-config` as command line argument under cygwin/msys bash
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    <p>I'm trying to use cygwin as a build environment under Windows. I have some dependencies on 3rd party packages, for example, GTK+. </p> <p>Normally when I build under Linux, in my Makefile I can add a call to pkg-config as an argument to gcc, so it comes out like so:</p> <pre> gcc example.c `pkg-config --libs --cflags gtk+-2.0` </pre> <p>This works fine under Linux, but in cygwin I get:</p> <pre> :Invalid argument make: *** [example] Error 1 </pre> <p>Right now, I am just manually running pkg-config and pasting the output into the Makefile, which is truly terrible. Is there a good way to workaround or fix for this issue?</p> <p>Make isn't the culprit. I can copy and paste the command line that make uses to call gcc, and that by itself will run gcc, which halts with ": Invalid argument". </p> <p>I wrote a small test program to print out command line arguments:</p> <pre><code>for (i = 0; i &lt; argc; i++) printf("'%s'\n", argv[i]); </code></pre> <p>Notice the single quotes.</p> <pre> $ pkg-config --libs gtk+-2.0 -Lc:/mingw/lib -lgtk-win32-2.0 -lgdk-win32-2.0 -latk-1.0 -lgdk_pixbuf-2.0 -lpang owin32-1.0 -lgdi32 -lpangocairo-1.0 -lpango-1.0 -lcairo -lgobject-2.0 -lgmodule- 2.0 -lglib-2.0 -lintl </pre> <p>Running through the test program:</p> <pre> $ ./t `pkg-config --libs gtk+-2.0` 'C:\cygwin\home\smo\pvm\src\t.exe' '-Lc:/mingw/lib' '-lgtk-win32-2.0' '-lgdk-win32-2.0' '-latk-1.0' '-lgdk_pixbuf-2.0' '-lpangowin32-1.0' '-lgdi32' '-lpangocairo-1.0' '-lpango-1.0' '-lcairo' '-lgobject-2.0' '-lgmodule-2.0' '-lglib-2.0' '-lintl' ' </pre> <p>Notice the one single quote on the last line. It looks like argc is one greater than it should be, and argv[argc - 1] is null. Running the same test on Linux does not have this result.</p> <p>That said, is there, say, some way I could have the Makefile store the result of pkg-config into a variable, and then use that variable, rather than using the back-tick operator?</p>
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    1. COIam also on a Win 64-System (Vista64) and struggling at the same point. I have noticed thadt 32 and 64-Bit GTK Installations confuses pkg-config and the lib path are not correctly determined. Iam now looking for a non pkg-config Solution, so i can better understand what is exactly happend on the linker process.
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      1. USPeter Meyer
 

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