Erik Joelsson added a comment - 6 hours ago
When using the updated devkit that contains zlib-devel, the build fails on these warnings when using --with-zlib=system:

/opt/jprt/jprtadm/erik/jdk9-dev/jdk/src/java.base/share/native/libzip/zip_util.c: In function 'InflateFully':
/opt/jprt/jprtadm/erik/jdk9-dev/jdk/src/java.base/share/native/libzip/zip_util.c:1411:50: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
                 if (count != 0 || strm.total_out != entry->size) {
                                                  ^
/opt/jprt/jprtadm/erik/jdk9-dev/jdk/src/java.base/share/native/libzip/zip_util.c: In function 'ZIP_InflateFully':
/opt/jprt/jprtadm/erik/jdk9-dev/jdk/src/java.base/share/native/libzip/zip_util.c:1531:36: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
                 if (strm.total_out != outLen) {
                                    ^
cc1: all warnings being treated as errors
gmake[3]: *** [/opt/jprt/jprtadm/erik/jdk9-dev/build/olddevkit/support/native/java.base/libzip/zip_util.o] Error 1
gmake[3]: *** Waiting for unfinished jobs....
gmake[2]: *** [java.base-libs] Error 1