[cmake-developers] FindSTLSoft.cmake, Problems?

[mikkoi]

Hi,

A CMake project depends on the header only library STLSoft
(http://www.stlsoft.org/).
We rely on the developer having STLSoft installed or "installed"
(pointed to by an environment variable) on his system for compilation.
To make sure the developer's version is high enough, I created this
FindSTLSoft.cmake file.

Can someone read it through, and say if there are any errors or
antipatterns.
I'm still learning CMake, so I might have made mistakes.
Thank you.

By the way, if it is good enough, it can be added to the CMake 
distribution.

-- 
Mikko Koivunalho
LinkedIn: http://www.linkedin.com/in/MikkoKoivunalho
AboutMe: http://about.me/mikkokoivunalho
Blog: http://exercisesinintegrationanddelivery.blogspot.com


# - Find STLSoft
# This module finds if STLSoft is installed and determines where the
# include files and libraries are. This code sets the following
# variables:
# STLSOFT_FOUND - TRUE/FALSE - Found/not found (N.B. all upper case.)
# STLSoft_INCLUDE_DIR - path to include
# STLSoft_VERSION_MAJOR
# STLSoft_VERSION_MINOR
# STLSoft_VERSION_PATCH
# STLSoft_VERSION
# STLSoft_VERSION_COUNT
# The minimum required version of STLSoft can be specified using the
# standard CMake syntax, e.g. FIND_PACKAGE(STLSoft 1.9.117)
#
# Usage as follows:
# find_package(STLSoft)
# find_package(STLSoft 1.9.117 REQUIRED)
# find_package(STLSoft 1.9.117 EXACT QUIET REQUIRED)
#----------------------------------------------------------------------------------
include(FindPackageHandleStandardArgs)

# try to get global environment variable first...
set(_STLSOFT_ROOT "$ENV{STLSOFT}")

if(_STLSOFT_ROOT)
    set(STLSoft_INCLUDE_DIR ${_STLSOFT_ROOT}/include)
else(_STLSOFT_ROOT)
    find_path(STLSoft_INCLUDE_DIR
       NAMES
          stlsoft.h
)
endif(_STLSOFT_ROOT)

if(EXISTS "${STLSoft_INCLUDE_DIR}/stlsoft/stlsoft.h")
    file(READ "${STLSoft_INCLUDE_DIR}/stlsoft/stlsoft.h" 
_stlsoft_h_CONTENT)
    string(REGEX REPLACE ".*#define[ ]+_STLSOFT_VER_MAJOR[ ]+([0-9]+).*" 
"\\1"
          STLSoft_VERSION_MAJOR "${_stlsoft_h_CONTENT}")
    string(REGEX REPLACE ".*#define[ ]+_STLSOFT_VER_MINOR[ ]+([0-9]+).*" 
"\\1"
          STLSoft_VERSION_MINOR "${_stlsoft_h_CONTENT}")
    string(REGEX REPLACE ".*#define[ ]+_STLSOFT_VER_REVISION[ 
]+([0-9]+).*" "\\1"
          STLSoft_VERSION_PATCH "${_stlsoft_h_CONTENT}")
    set(STLSoft_VERSION
"${STLSoft_VERSION_MAJOR}.${STLSoft_VERSION_MINOR}.${STLSoft_VERSION_PATCH}")
    set(STLSoft_VERSION_COUNT 3)

    # Sets the STLSOFT_FOUND variable.
    find_package_handle_standard_args( STLSoft
          REQUIRED_VARS
             STLSoft_INCLUDE_DIR
          VERSION_VAR
             STLSoft_VERSION
    )
    mark_as_advanced(STLSoft_INCLUDE_DIR
       STLSoft_VERSION_MAJOR
       STLSoft_VERSION_MINOR
       STLSoft_VERSION_PATCH
       STLSoft_VERSION
       STLSoft_VERSION_COUNT
    )

else(EXISTS "${STLSoft_INCLUDE_DIR}/stlsoft/stlsoft.h")
    if(NOT STLSoft_FIND_QUIETLY)
       message(FATAL_ERROR "No STLSoft package found... Please point us 
with the STLSOFT env var!")
    endif(NOT STLSoft_FIND_QUIETLY)
endif(EXISTS "${STLSoft_INCLUDE_DIR}/stlsoft/stlsoft.h")