I am attempting to link an application with g++ on this Debian lenny system. ld is complaining it cannot find specified libraries. The specific example here is ImageMagick, but I am having similar problems with a few other libraries too.

I am calling the linker with:

    g++ -w (..lots of .o files/include directories/etc..) \
    -L/usr/lib -lmagic

ld complains:

    /usr/bin/ld: cannot find -lmagic

However, libmagic exists:

	$ locate libmagic.so
	/usr/lib/libmagic.so.1
	/usr/lib/libmagic.so.1.0.0
	$ ls -all /usr/lib/libmagic.so.1*
	lrwxrwxrwx 1 root root    17 2008-12-01 03:52 /usr/lib/libmagic.so.1 -&gt; libmagic.so.1.0.0
	-rwxrwxrwx 1 root root 84664 2008-09-09 00:05 /usr/lib/libmagic.so.1.0.0
	$ ldd /usr/lib/libmagic.so.1.0.0 
		linux-gate.so.1 =&gt;  (0xb7f85000)
		libz.so.1 =&gt; /usr/lib/libz.so.1 (0xb7f51000)
		libc.so.6 =&gt; /lib/i686/cmov/libc.so.6 (0xb7df6000)
		/lib/ld-linux.so.2 (0xb7f86000)
	$ sudo ldconfig -v | grep &quot;libmagic&quot;
		libmagic.so.1 -&gt; libmagic.so.1.0.0

How do I diagnose this problem further, and what could be wrong? Am I doing something completely stupid?


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ld cannot find an existing library