libtool erroneously assumes -L/path to libtool library

[Bob Friesenhahn <bfriesen at simple dot dallas dot tx dot us>]

Using CVS libtool, it appears that when a package installs several
libraries, with some libraries depending on other libraries, the
install step for a library which depends on another library fails.
The failure is due to not supplying the required -L option to
find the already installed library.  The following is an example of
the problem:

/bin/sh ../../libtool --silent --mode=install /usr/bin/install -c  libMagick++.la /build/buildd/imagemagick-5.4.6/debian/imagemagick/usr/lib/libMagick++.la
libtool: install: warning: relinking `libMagick++.la'
g++ -shared -nostdlib /usr/lib/crti.o /usr/lib/gcc-lib/m68k-linux/2.95.4/crtbeginS.o  .libs/Blob.o .libs/CoderInfo.o .libs/Color.o .libs/Drawable.o .libs/Exception.o .libs/Functions.o .libs/Geometry.o .libs/Image.o .libs/Montage.o .libs/Options.o .libs/Pixels.o .libs/STL.o .libs/Thread.o .libs/TypeMetric.o  -L/usr/X11R6/lib -L/usr/lib -lMagick -L/usr/lib/gcc-lib/m68k-linux/2.95.4 -lstdc++ -lm -lc -lgcc  -lc /usr/lib/gcc-lib/m68k-linux/2.95.4/crtendS.o /usr/lib/crtn.o  -Wl,-soname -Wl,libMagick++.so.5 -o .libs/libMagick++.so.5.0.46  -L/usr/X11R6/lib -L/usr/lib -lMagick -L/usr/lib/gcc-lib/m68k-linux/2.95.4 -lstdc++ -lm -lc -lgcc  -lc
/usr/bin/ld: cannot find -lMagick
collect2: ld returned 1 exit status
libtool: install: error: relink `libMagick++.la' with the above command before installing it
libtool: install: warning: remember to run `libtool --finish /usr/lib'

Libtool should know where libMagick is installed since it has access
to the libMagick.la file, however, it failed to supply the required -L
option to the linker so that the installed library is found.

Bob
======================================
Bob Friesenhahn
bfriesen@simple.dallas.tx.us
http://www.simplesystems.org/users/bfriesen