Somehow the compiler messages don't make sense. For instance:

"/usr/local/build/php-7.0.14_SunOS5.10_sparcv9.001/Zend/zend_alloc.c", line 2464: error: identifier redefined: _efree
        current : function(pointer to void) returning void
        previous: function(pointer to void, unsigned long) returning void : "/usr/local/build/php-7.0.14_SunOS5.10_sparcv9.001/Zend/zend_alloc.c", line 2442

line 2442 declares _efree_huge[1], but not _efree.

Please check whether there are line numbering issues.

[1] <https://github.com/php/php-src/blob/PHP-7.0.14/Zend/zend_alloc.c#L2442>

No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.

I will test this problem with 7.0.15 as well as 7.1.1 but clearly this bug
report says version 7.0.14.  I think the problem persists but I will look
into this.

> Please check whether there are line numbering issues.

I'm talking about *line* (not *version*) numbers. Either your
PHP 7.0.14 sources have other line numbers than the official
sources, or your compiler presents wrong line numbers, or it is
otherwise confused. See my comment above for details.

I have moved on to 7.0.15 where the compile succeeds for a while and fails in the link stage with many undefined symbols : 


/usr/local/bin/bash /usr/local/build/php-7.0.15_SunOS5.10_sparcv9.001/libtool --silent --preserve-dup-deps --mode=link /usr/local/build/php-7.0.15_SunOS5.10_sparcv9.001/meta_ccld -export-dynamic -errfmt=error -erroff=%none -errshort=full -xstrconst -xildoff -m64 -xmemalign=8s -xnolibmil -Xa -xcode=pic32 -xregs=no%appl -xlibmieee -ftrap=%none -xarch=sparc -D_TS_ERRNO -D_POSIX_PTHREAD_SEMANTICS -D_LARGEFILE64_SOURCE -DUSE_ZEND_ALLOC=0 -g -DZTS   -L/usr/ucblib  -R /usr/ucblib ext/date/php_date.lo ext/date/lib/astro.lo ext/date/lib/dow.lo ext/date/lib/parse_date.lo ext/date/lib/parse_tz.lo ext/date/lib/timelib.lo ext/date/lib/tm2unixtime.lo ext/date/lib/unixtime2tm.lo ext/date/lib/parse_iso_intervals.lo ext/date/lib/interval.lo ext/pcre/pcrelib/pcre_chartables.lo ext/pcre/pcrelib/pcre_ucd.lo ext/pcre/pcrelib/pcre_compile.lo ext/pcre/pcrelib/pcre_config.lo ext/pcre/pcrelib/pcre_exec.lo ext/pcre/pcrelib/pcre_fullinfo.lo ext/pcre/pcrelib/pcre_get.lo ext/pcre/pcrelib/pcre_globals.lo ext/pcre/pcrelib/pcre_maketables.lo ext/pcre/pcrelib/pcre_newline.lo ext/pcre/pcrelib/pcre_ord2utf8.lo ext/pcre/pcrelib/pcre_refcount.lo ext/pcre/pcrelib/pcre_study.lo ext/pcre/pcrelib/pcre_tables.lo ext/pcre/pcrelib/pcre_valid_utf8.lo ext/pcre/pcrelib/pcre_version.lo ext/pcre/pcrelib/pcre_xclass.lo ext/pcre/pcrelib/pcre_jit_compile.lo ext/pcre/php_pcre.lo ext/reflection/php_reflection.lo ext/spl/php_spl.lo ext/spl/spl_functions.lo ext/spl/spl_engine.lo ext/spl/spl_iterators.lo ext/spl/spl_array.lo ext/spl/spl_directory.lo ext/spl/spl_exceptions.lo ext/spl/spl_observer.lo ext/spl/spl_dllist.lo ext/spl/spl_heap.lo ext/spl/spl_fixedarray.lo ext/standard/crypt_freesec.lo ext/standard/crypt_blowfish.lo ext/standard/crypt_sha512.lo ext/standard/crypt_sha256.lo ext/standard/php_crypt_r.lo ext/standard/array.lo ext/standard/base64.lo ext/standard/basic_functions.lo ext/standard/browscap.lo ext/standard/crc32.lo ext/standard/crypt.lo ext/standard/cyr_convert.lo ext/standard/datetime.lo ext/standard/dir.lo ext/standard/dl.lo ext/standard/dns.lo ext/standard/exec.lo ext/standard/file.lo ext/standard/filestat.lo ext/standard/flock_compat.lo ext/standard/formatted_print.lo ext/standard/fsock.lo ext/standard/head.lo ext/standard/html.lo ext/standard/image.lo ext/standard/info.lo ext/standard/iptc.lo ext/standard/lcg.lo ext/standard/link.lo ext/standard/mail.lo ext/standard/math.lo ext/standard/md5.lo ext/standard/metaphone.lo ext/standard/microtime.lo ext/standard/pack.lo ext/standard/pageinfo.lo ext/standard/quot_print.lo ext/standard/rand.lo ext/standard/soundex.lo ext/standard/string.lo ext/standard/scanf.lo ext/standard/syslog.lo ext/standard/type.lo ext/standard/uniqid.lo ext/standard/url.lo ext/standard/var.lo ext/standard/versioning.lo ext/standard/assert.lo ext/standard/strnatcmp.lo ext/standard/levenshtein.lo ext/standard/incomplete_class.lo ext/standard/url_scanner_ex.lo ext/standard/ftp_fopen_wrapper.lo ext/standard/http_fopen_wrapper.lo ext/standard/php_fopen_wrapper.lo ext/standard/credits.lo ext/standard/css.lo ext/standard/var_unserializer.lo ext/standard/ftok.lo ext/standard/sha1.lo ext/standard/user_filters.lo ext/standard/uuencode.lo ext/standard/filters.lo ext/standard/proc_open.lo ext/standard/streamsfuncs.lo ext/standard/http.lo ext/standard/password.lo ext/standard/random.lo TSRM/TSRM.lo TSRM/tsrm_strtok_r.lo main/main.lo main/snprintf.lo main/spprintf.lo main/php_sprintf.lo main/fopen_wrappers.lo main/alloca.lo main/php_scandir.lo main/php_ini.lo main/SAPI.lo main/rfc1867.lo main/php_content_types.lo main/strlcpy.lo main/strlcat.lo main/mergesort.lo main/reentrancy.lo main/php_variables.lo main/php_ticks.lo main/network.lo main/php_open_temporary_file.lo main/output.lo main/getopt.lo main/streams/streams.lo main/streams/cast.lo main/streams/memory.lo main/streams/filter.lo main/streams/plain_wrapper.lo main/streams/userspace.lo main/streams/transports.lo main/streams/xp_socket.lo main/streams/mmap.lo main/streams/glob_wrapper.lo Zend/zend_language_parser.lo Zend/zend_language_scanner.lo Zend/zend_ini_parser.lo Zend/zend_ini_scanner.lo Zend/zend_alloc.lo Zend/zend_compile.lo Zend/zend_constants.lo Zend/zend_dtrace.lo Zend/zend_execute_API.lo Zend/zend_highlight.lo Zend/zend_llist.lo Zend/zend_vm_opcodes.lo Zend/zend_opcode.lo Zend/zend_operators.lo Zend/zend_ptr_stack.lo Zend/zend_stack.lo Zend/zend_variables.lo Zend/zend.lo Zend/zend_API.lo Zend/zend_extensions.lo Zend/zend_hash.lo Zend/zend_list.lo Zend/zend_builtin_functions.lo Zend/zend_sprintf.lo Zend/zend_ini.lo Zend/zend_sort.lo Zend/zend_multibyte.lo Zend/zend_ts_hash.lo Zend/zend_stream.lo Zend/zend_iterators.lo Zend/zend_interfaces.lo Zend/zend_exceptions.lo Zend/zend_strtod.lo Zend/zend_gc.lo Zend/zend_closures.lo Zend/zend_float.lo Zend/zend_string.lo Zend/zend_signal.lo Zend/zend_generators.lo Zend/zend_virtual_cwd.lo Zend/zend_ast.lo Zend/zend_objects.lo Zend/zend_object_handlers.lo Zend/zend_objects_API.lo Zend/zend_default_classes.lo Zend/zend_inheritance.lo Zend/zend_smart_str.lo Zend/zend_execute.lo main/internal_functions_cli.lo sapi/cli/php_cli.lo sapi/cli/php_http_parser.lo sapi/cli/php_cli_server.lo sapi/cli/ps_title.lo sapi/cli/php_cli_process_title.lo -lresolv -lrt -lm -lpthread  -o sapi/cli/php

results in : 


Undefined                       first referenced
 symbol                             in file
bind                                main/.libs/network.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
recv                                main/streams/.libs/xp_socket.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
send                                main/streams/.libs/xp_socket.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
getservbyname                       ext/standard/.libs/basic_functions.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
socketpair                          ext/standard/.libs/streamsfuncs.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
getsockname                         main/.libs/network.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
accept                              main/.libs/network.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
gethostbyname_r                     main/.libs/network.o  (symbol belongs to implicit dependency /lib/64/libnsl.so.1)
listen                              main/streams/.libs/xp_socket.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
gethostbyaddr                       ext/standard/.libs/dns.o  (symbol belongs to implicit dependency /lib/64/libnsl.so.1)
sendto                              main/streams/.libs/xp_socket.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
socket                              main/.libs/network.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
getprotobyname                      ext/standard/.libs/basic_functions.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
getprotobynumber                    ext/standard/.libs/basic_functions.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
setsockopt                          main/.libs/network.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
getsockopt                          main/.libs/network.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
connect                             main/.libs/network.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
in6addr_any                         main/.libs/network.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
getaddrinfo                         main/.libs/network.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
getpeername                         main/.libs/network.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
recvfrom                            main/streams/.libs/xp_socket.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
freeaddrinfo                        main/.libs/network.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
inet_pton                           ext/standard/.libs/basic_functions.o  (symbol belongs to implicit dependency /lib/64/libnsl.so.1)
inet_ntoa                           ext/standard/.libs/dns.o  (symbol belongs to implicit dependency /lib/64/libnsl.so.1)
inet_ntop                           ext/standard/.libs/basic_functions.o  (symbol belongs to implicit dependency /lib/64/libnsl.so.1)
gai_strerror                        main/.libs/network.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
shutdown                            main/streams/.libs/xp_socket.o  (symbol belongs to implicit dependency /lib/64/libsocket.so.1)
ld: fatal: symbol referencing errors. No output written to sapi/cli/php
gmake: *** [sapi/cli/php] Error 2

There seems to be some sort of a library issue and most likely LD options somewhere.

Is this still an issue with any of the actively supported PHP
versions[1]?

[1] <https://www.php.net/supported-versions.php>

No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.