RPath usage in CoreCLR

[Kamil Rytarowski <n54%gmx.com@localhost>]

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I'm trying to with the installation target of CoreCLR on NetBSD
(wip/coreclr-git).

It uses nonstandard distribution paths -- everything is installed
under single subprefix -- I went for $PREFIX/CoreCLR. To make it work
I need to set RPATH to $PREFIX/CoreCLR, $PREFIX/CoreCLR/bin and
$PREFIX/CoreCLR/Loader/NativeLibs...

I don't know what I'm doing wrong, but I always get RPATH value set to
only $PREFIX/lib.

I was trying to extend LDFLAGS with the following base arguments

CORECLR_PREFIX= ${PREFIX}/CoreCLR

# Handle subprefix
LDFLAGS+=       ${COMPILER_RPATH_FLAG}${CORECLR_PREFIX:Q}
LDFLAGS+=
${COMPILER_RPATH_FLAG}${CORECLR_PREFIX:Q}/Loader/NativeLibs
LDFLAGS+=       ${COMPILER_RPATH_FLAG}${CORECLR_PREFIX:Q}/bin

with additional -L flags, but without success.

Here is a part of clang++ call during build:

/usr/pkg/bin/clang++  -fPIC -O2 -g -ggdb -I/usr/pkg/include
- -I/usr/include -g -ggdb -Wall -Wno-null-conversion -std=c++11 -g -O0
- -Wl,-R/usr/pkg/CoreCLR -L/usr/pkg/CoreCLR
- -Wl,-R/usr/pkg/CoreCLR/Loader/NativeLibs
- -L/usr/pkg/CoreCLR/Loader/NativeLibs -Wl,-R/usr/pkg/CoreCLR/bin
- -L/usr/pkg/CoreCLR/bin -L/usr/pkg/lib -Wl,-R/usr/pkg/lib -L/usr/lib
- -Wl,-R/usr/lib -shared -Wl,-soname,libsosplugin.so -o libsosplugin.so
CMakeFiles/sosplugin.dir/sosplugin.cpp.o
CMakeFiles/sosplugin.dir/soscommand.cpp.o
CMakeFiles/sosplugin.dir/setclrpathcommand.cpp.o
CMakeFiles/sosplugin.dir/setsostidcommand.cpp.o
CMakeFiles/sosplugin.dir/coreruncommand.cpp.o
CMakeFiles/sosplugin.dir/debugclient.cpp.o
CMakeFiles/sosplugin.dir/__/__/__/coreclr/hosts/unixcorerun/corerun.cpp.
o
CMakeFiles/sosplugin.dir/__/__/__/coreclr/hosts/unixcoreruncommon/coreru
ncommon.cpp.o
/tmp/pkgsrc-tmp/wip/coreclr-git/work/.buildlink/lib/liblldb.so

RPATH should be set to all the paths... but it's still only limited to
/usr/pkg/lib.

Thank you for your pointers!
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