CMake/Auxiliary
John Donoghue 7788db9c4e cmake.m4: do not set _XXXFLAGS or _LIBS var if already set
* Auxiliary/cmake.m4 (CMAKE_FIND_PACKAGE): change var tests from -n to -z
  to check if var is already set before calling cmake

Fixes: #14460, #16663
2017-02-23 07:16:16 -05:00
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