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# Use this to save the existing pkg-config settings
function(save_pkg_config_env)
message(STATUS "saving pkg-config env")
if (DEFINED ENV{PKG_CONFIG_PATH})
set(SAVED_PKG_CONFIG_PATH "$ENV{PKG_CONFIG_PATH}")
endif()
if (DEFINED ENV{PKG_CONFIG_LIBDIR})
set(SAVED_PKG_CONFIG_LIBDIR "$ENV{PKG_CONFIG_LIBDIR}")
endif()
endfunction()
# Use this to restore to the original pkg-config settings
function(restore_pkg_config_env)
message(STATUS "restoring pkg-config env")
if (SAVED_PKG_CONFIG_PATH)
set(ENV{PKG_CONFIG_PATH} "${SAVED_PKG_CONFIG_PATH}")
unset(SAVED_PKG_CONFIG_PATH)
else()
unset(ENV{PKG_CONFIG_PATH})
endif()
if (SAVED_PKG_CONFIG_LIBDIR)
set(ENV{PKG_CONFIG_LIBDIR} "${SAVED_PKG_CONFIG_LIBDIR}")
unset(SAVED_PKG_CONFIG_LIBDIR)
else()
unset(ENV{PKG_CONFIG_LIBDIR})
endif()
endfunction()
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