Description:
------------
If you compile the zip extension against the latest libzip Version 1.5.1a the compile run fails:

In file included from /opt/libzip/include/zip.h:45:0,
                 from /usr/src/php-7.2.12/ext/zip/php_zip.h:31,
                 from /usr/src/php-7.2.12/ext/zip/php_zip.c:36:
/usr/src/php-7.2.12/ext/zip/php_zip.c: In function ‘php_zip_object_free_storage’:
/opt/libzip/include/zipconf.h:14:30: error: invalid suffix "a" on integer constant
 #define LIBZIP_VERSION_MICRO 1a
                              ^
/usr/src/php-7.2.12/ext/zip/php_zip.c:1029:63: note: in expansion of macro ‘LIBZIP_VERSION_MICRO’
 #if LIBZIP_VERSION_MAJOR == 1 && LIBZIP_VERSION_MINOR == 3 && LIBZIP_VERSION_MICRO == 1
                                                               ^
/usr/src/php-7.2.12/ext/zip/php_zip.c: In function ‘c_ziparchive_close’:
/opt/libzip/include/zipconf.h:14:30: error: invalid suffix "a" on integer constant
 #define LIBZIP_VERSION_MICRO 1a
                              ^
/usr/src/php-7.2.12/ext/zip/php_zip.c:1542:63: note: in expansion of macro ‘LIBZIP_VERSION_MICRO’
 #if LIBZIP_VERSION_MAJOR == 1 && LIBZIP_VERSION_MINOR == 3 && LIBZIP_VERSION_MICRO == 1
                                                               ^
make: *** [ext/zip/php_zip.lo] Error 1
make: *** Waiting for unfinished jobs....

That's maybe an error on the libzip code itself using 1a as define, but I'm not sure so I'll post it here for reference.


Expected result:
----------------
Compile should be completed without a failure

Actual result:
--------------
Compile run failed.