Hello, I am having difficulty upgrading OpenSSH_6.0p1 to any higher version from OpenSSH_6.1p1 to OpenSSH_7.6p1. I keep getting the same error below: Any thoughts or concerns? Am I missing something here. Thanks in advance, checking zlib.h usability... no checking zlib.h presence... yes configure: WARNING: zlib.h: present but cannot be compiled configure: WARNING: zlib.h: check for missing prerequisite headers? configure: WARNING: zlib.h: see the Autoconf documentation configure: WARNING: zlib.h: section "Present But Cannot Be Compiled" configure: WARNING: zlib.h: proceeding with the compiler's result configure: WARNING: ## ------------------------------------------- ## configure: WARNING: ## Report this to openssh-unix-dev@xxxxxxxxxxx<mailto:openssh-unix-dev@xxxxxxxxxxx> ## configure: WARNING: ## ------------------------------------------- ## checking for zlib.h... no configure: error: *** zlib.h missing - please install first or check config.log *** ssh -V OpenSSH_6.0p1, OpenSSL 1.0.2j 26 Sep 2016 find / -name zlib.h /opt/freeware/include/zlib.h /usr/include/zlib.h /usr/local/include/zlib.h _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev