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-rw-r--r--Modules/FindZLIB.cmake35
1 files changed, 25 insertions, 10 deletions
diff --git a/Modules/FindZLIB.cmake b/Modules/FindZLIB.cmake
index 77f9fda..166e291 100644
--- a/Modules/FindZLIB.cmake
+++ b/Modules/FindZLIB.cmake
@@ -17,9 +17,12 @@
# ZLIB_MAJOR_VERSION - The major version of zlib
# ZLIB_MINOR_VERSION - The minor version of zlib
# ZLIB_PATCH_VERSION - The patch version of zlib
+#
+# An includer may set ZLIB_ROOT to a zlib installation root to tell
+# this module where to look.
#=============================================================================
-# Copyright 2001-2009 Kitware, Inc.
+# Copyright 2001-2011 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
@@ -31,17 +34,29 @@
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
-FIND_PATH(ZLIB_INCLUDE_DIR zlib.h
- "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]/include"
-)
+SET(_ZLIB_SEARCHES)
+
+# Search ZLIB_ROOT first if it is set.
+IF(ZLIB_ROOT)
+ SET(_ZLIB_SEARCH_ROOT PATHS ${ZLIB_ROOT} NO_DEFAULT_PATH)
+ LIST(APPEND _ZLIB_SEARCHES _ZLIB_SEARCH_ROOT)
+ENDIF()
+
+# Normal search.
+SET(_ZLIB_SEARCH_NORMAL
+ PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]"
+ "$ENV{PROGRAMFILES}/zlib"
+ )
+LIST(APPEND _ZLIB_SEARCHES _ZLIB_SEARCH_NORMAL)
SET(ZLIB_NAMES z zlib zdll zlib1 zlibd zlibd1)
-FIND_LIBRARY(ZLIB_LIBRARY
- NAMES
- ${ZLIB_NAMES}
- PATHS
- "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]/lib"
-)
+
+# Try each search configuration.
+FOREACH(search ${_ZLIB_SEARCHES})
+ FIND_PATH(ZLIB_INCLUDE_DIR NAMES zlib.h ${${search}} PATH_SUFFIXES include)
+ FIND_LIBRARY(ZLIB_LIBRARY NAMES ${ZLIB_NAMES} ${${search}} PATH_SUFFIXES lib)
+ENDFOREACH()
+
MARK_AS_ADVANCED(ZLIB_LIBRARY ZLIB_INCLUDE_DIR)
IF(ZLIB_INCLUDE_DIR AND EXISTS "${ZLIB_INCLUDE_DIR}/zlib.h")