[CMake] CMake toolchain and FIND_PACKAGE(OpenSSL)

[Boards Killer]

Hi CMake Community !

I am writing a CMake toolchain to cross compile our CMake project with the
Ubuntu ARM Linux toolchain. The CMake toolchain is given below.

I am facing the following problem. When using:
FIND_PACKAGE(OpenSSL)

The libraries (lssl, lcrypto) are *not* found. There are actually located
at
$ENV{SDK_TARGET}/lib

I thought that adding a LINK_DIRECTORIES to the toolchain would do the
trick, but no avail.

What is the best way to tell CMake where to find the libraries? Should I
set the path manually
in the toolchain, for instance.

TIA,
/ld
-- 
# Cmake toolchain for cross compiling

# target system type
SET(CMAKE_SYSTEM_NAME Linux)
SET(CMAKE_SYSTEM_VERSION 1)
SET(CMAKE_SYSTEM_PROCESSOR armv7l)

INCLUDE_DIRECTORIES(SYSTEM "$ENV{SDK_TARGET}/usr/include")
INCLUDE_DIRECTORIES(SYSTEM "$ENV{SDK_TARGET}/usr/include/arm-linux-gnueabi")
LINK_DIRECTORIES("$ENV{SDK_TARGET}/lib")

# specify the cross compiler
SET(CMAKE_C_COMPILER   arm-linux-gnueabi-gcc)
SET(CMAKE_CXX_COMPILER arm-linux-gnueabi-g++)

# location of target environment
SET(CMAKE_FIND_ROOT_PATH $ENV{SDK_TARGET})

# search for programs in the build host directories
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)

# for libraries and headers in the target directories
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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