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diff --git a/Modules/FindPkgConfig.cmake b/Modules/FindPkgConfig.cmake
index c47f583..5783d37 100644
--- a/Modules/FindPkgConfig.cmake
+++ b/Modules/FindPkgConfig.cmake
@@ -87,7 +87,12 @@
set(PKG_CONFIG_VERSION 1)
set(PKG_CONFIG_FOUND 0)
-find_program(PKG_CONFIG_EXECUTABLE NAMES pkg-config DOC "pkg-config executable")
+if(NOT PKG_CONFIG_EXECUTABLE)
+ set(PKG_CONFIG_EXECUTABLE $ENV{PKG_CONFIG})
+ if(NOT PKG_CONFIG_EXECUTABLE)
+ find_program(PKG_CONFIG_EXECUTABLE NAMES pkg-config DOC "pkg-config executable")
+ endif(NOT PKG_CONFIG_EXECUTABLE)
+endif(NOT PKG_CONFIG_EXECUTABLE)
mark_as_advanced(PKG_CONFIG_EXECUTABLE)
if(PKG_CONFIG_EXECUTABLE)
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