tree afb984f59e69f965419556b1cbe87f0416538c5a
parent d7ad7a1178dad72dbdc7f6b9f218a6f3188145fe
author Wan-Teh Chang <wtc@google.com> 1684966781 -0700
committer Wan-Teh Chang <wtc@google.com> 1684969170 -0700

CMakeLists.txt: Fix the AppVeyor build

If the system doesn't have the zlib package installed, for
find_package(ZLIB REQUIRED) to succeed, we must set the ZLIB_INCLUDE_DIR
variable. So change ZLIB_INCLUDE_DIRS back to ZLIB_INCLUDE_DIR.

Add ${ZLIB_INCLUDE_DIR} to the include directories so that zlib.h can be
found. "${CMAKE_CURRENT_BINARY_DIR}/ext/zlib" only has zconf.h.