Fix libicu linkage in libical.pc

[rossburton]

I'm cross-compiling libical in a sysroot and the installed libical.pc looks like this:

prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
threadslib=-lpthread
iculib=/data/poky-master/tmp-glibc/sysroots/intel-corei7-64/usr/lib/libicuuc.so /data/poky-master/tmp-glibc/sysroots/intel-corei7-64/usr/lib/libicui18n.so

Name: libical
Description: An implementation of basic iCAL protocols
Version: 2.0
Libs: -L${libdir} -lical -licalss -licalvcal ${threadslib} ${iculib}
Cflags: -I${includedir}

As you can see the iculib variable doesn't contain -licuuc -licui18n but the full paths to the libraries inside the sysroot. Apart from being ugly, this breaks when the sysroot is moved.

[winterz]

iculibdir=${SYSROOT}/usr/lib
iculib=-licuuc -licui18n
Libs: -L${libdir} -lical -licalss -licalvcal ${threadslib} -L${iculibdir} ${iculib}

any better? I'm not expert in cross-compiling. not sure if there is a standard envvar for the sysroot

[winterz]

ping? thoughts?

[KrullBorg]

i don't know how cmake works so i cannot help, but i think it is better to use pkg-config, if the version of libicu provides it

[winterz]

fixed in 1a41069