undefined symbol: rados_clone_range on CentOS 7

[kaplun]

Hi I am trying to build phprados on CentOS 7 to be used with PHP-7.2. as provided by WebTatic: https://webtatic.com/packages/php72/

I have installed librados:

$ rpm -qa | grep rados
librados-devel-12.2.5-0.el7.x86_64
librados2-12.2.5-0.el7.x86_64

And the phprados does compile and install successfully. However upon import into PHP it fails with:

PHP Warning:  PHP Startup: Unable to load dynamic library 'rados.so' (tried:
 /usr/lib64/php/modules/rados.so (/usr/lib64/php/modules/rados.so: undefined symbol: 
rados_clone_range), /usr/lib64/php/modules/rados.so.so (/usr/lib64/php/modules/rados.so.so: cannot 
open shared object file: No such file or directory)) in Unknown on line 0

I checked and indeed:

$ ldd -r /usr/lib64/php/modules/rados.so 
	linux-vdso.so.1 =>  (0x00007ffda4e6d000)
	libcrypto.so.10 => /lib64/libcrypto.so.10 (0x00007f17dcd14000)
	librados.so.2 => /lib64/librados.so.2 (0x00007f17dc9af000)
	libc.so.6 => /lib64/libc.so.6 (0x00007f17dc5ec000)
	libdl.so.2 => /lib64/libdl.so.2 (0x00007f17dc3e8000)
	libz.so.1 => /lib64/libz.so.1 (0x00007f17dc1d2000)
	libceph-common.so.0 => /usr/lib64/ceph/libceph-common.so.0 (0x00007f17d34f2000)
	libblkid.so.1 => /lib64/libblkid.so.1 (0x00007f17d32b3000)
	libssl3.so => /lib64/libssl3.so (0x00007f17d3067000)
	libsmime3.so => /lib64/libsmime3.so (0x00007f17d2e40000)
	libnss3.so => /lib64/libnss3.so (0x00007f17d2b16000)
	libnssutil3.so => /lib64/libnssutil3.so (0x00007f17d28e9000)
	libplds4.so => /lib64/libplds4.so (0x00007f17d26e5000)
	libplc4.so => /lib64/libplc4.so (0x00007f17d24e0000)
	libnspr4.so => /lib64/libnspr4.so (0x00007f17d22a2000)
	librt.so.1 => /lib64/librt.so.1 (0x00007f17d209a000)
	libresolv.so.2 => /lib64/libresolv.so.2 (0x00007f17d1e80000)
	libibverbs.so.1 => /lib64/libibverbs.so.1 (0x00007f17d1c6b000)
	libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f17d1a4f000)
	libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007f17d1747000)
	libm.so.6 => /lib64/libm.so.6 (0x00007f17d1445000)
	libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f17d122f000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f17dd381000)
	libuuid.so.1 => /lib64/libuuid.so.1 (0x00007f17d102a000)
	libnl-route-3.so.200 => /lib64/libnl-route-3.so.200 (0x00007f17d0dbd000)
	libnl-3.so.200 => /lib64/libnl-3.so.200 (0x00007f17d0b9c000)
undefined symbol: zend_hash_get_current_data_ex	(/usr/lib64/php/modules/rados.so)
undefined symbol: php_error_docref0	(/usr/lib64/php/modules/rados.so)
undefined symbol: add_next_index_string	(/usr/lib64/php/modules/rados.so)
undefined symbol: _emalloc	(/usr/lib64/php/modules/rados.so)
undefined symbol: zend_hash_move_forward_ex	(/usr/lib64/php/modules/rados.so)
undefined symbol: php_info_print_table_row	(/usr/lib64/php/modules/rados.so)
undefined symbol: rados_clone_range	(/usr/lib64/php/modules/rados.so)
undefined symbol: add_next_index_long	(/usr/lib64/php/modules/rados.so)
undefined symbol: zend_fetch_resource	(/usr/lib64/php/modules/rados.so)
undefined symbol: add_assoc_string_ex	(/usr/lib64/php/modules/rados.so)
undefined symbol: Z_LVAL_PP	(/usr/lib64/php/modules/rados.so)
undefined symbol: _emalloc_16	(/usr/lib64/php/modules/rados.so)
undefined symbol: php_info_print_table_end	(/usr/lib64/php/modules/rados.so)
undefined symbol: php_info_print_table_start	(/usr/lib64/php/modules/rados.so)
undefined symbol: zend_hash_internal_pointer_reset_ex	(/usr/lib64/php/modules/rados.so)
undefined symbol: Z_TYPE_PP	(/usr/lib64/php/modules/rados.so)
undefined symbol: _estrndup	(/usr/lib64/php/modules/rados.so)
undefined symbol: zend_parse_parameters	(/usr/lib64/php/modules/rados.so)
undefined symbol: zend_register_resource	(/usr/lib64/php/modules/rados.so)
undefined symbol: zend_register_list_destructors_ex	(/usr/lib64/php/modules/rados.so)
undefined symbol: _efree	(/usr/lib64/php/modules/rados.so)
undefined symbol: add_assoc_stringl_ex	(/usr/lib64/php/modules/rados.so)
undefined symbol: add_assoc_long_ex	(/usr/lib64/php/modules/rados.so)
undefined symbol: _array_init	(/usr/lib64/php/modules/rados.so)
undefined symbol: zend_hash_get_current_key_ex	(/usr/lib64/php/modules/rados.so)
undefined symbol: php_sprintf	(/usr/lib64/php/modules/rados.so)
undefined symbol: display_ini_entries	(/usr/lib64/php/modules/rados.so)

Beside the PHP-specific symbols, that can only be resolved from within PHP, it seems like like also rados_clone_range is an unresolved symbol.

cc: @JanoSicek

[wido]

It seems that rados_clone_range no longer exists in librados.

I'll push a new commit to master removing this function

[kaplun]

Awesome! Thanks a lot for the quick reaction!

[kaplun]

I unfortunately confirm @JanoSicek findings.

[JanoSicek]

It seems that while this one symbol was fixed (rados_clone_range), all other symbols still generate errors.

PHP Warning: PHP Startup: Unable to load dynamic library 'rados.so' (tried: /usr/lib64/php/modules/rados.so (/usr/lib64/php/modules/rados.so: undefined symbol: Z_LVAL_PP)

To help reproduce, here are some interesting parts from our Dockerfile

RUN yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
RUN rpm -Uvh http://download.ceph.com/rpm-mimic/el7/noarch/ceph-release-1-1.el7.noarch.rpm
RUN yum install -y librados-devel php72w php72w-common php72w-devel php72w-opcache php72w-mbstring php72w-mysqlnd php72w-pecl-xdebug php72w-intl php72w-cli php72w-gd php72w-pdo php72w-mcrypt re2c php72w-pear
RUN phpize && ./configure && make && make install
RUN echo 'extension=rados.so' > /etc/php.d/rados.ini