Compiling glibc 2.14.1 on CentOS 6.10

[Alberto Mijares <amijaresp@gmail.com>]

Hello all,

This is my first post to this list and I'm not a developer so please
forgive me if I look like a newbie.

I was assigned with the task to compile PHP 5.6 with an up-to-date
OpenSSL version for CentOS 6.10 so they can integrate their legacy app
with a third-party service. It has been a long journey  and now I'm
very close.

Right now I'm trying to compile cmake. which is a requirement for
brotli and this one for Apache -> mod_php56.

The compilation of cmake fails because it cannot find a reference to
sendmmsg, only available since glibc 2.14 (according to a post
somewhere). CentOS comes with glibc 2.12.

So, that's why I'm trying to compile glibc 2.14.1. I'm using pkgsrc as
building framework and after a few patches I managed to get to this
point

make[2]: Entering directory `/usr/pkgsrc/wip/glibc/work/glibc-2.14.1/elf'
cc -L/opt/zvi/gcc7/lib/gcc/x86_64-redhat-linux/7.5.0
-Wl,-R/opt/zvi/gcc7/lib/gcc/x86_64-redhat-linux/7.5.0
-L/opt/zvi/gcc7/lib64 -Wl,-R/opt/zvi/gcc7/lib64 -Wl,-zrelro
-L/opt/zvi/lib -L/usr/lib64 -Wl,-R/usr/lib64 -Wl,-R/opt/zvi/lib
-nostdlib -nostartfiles -r -o
/usr/pkgsrc/wip/glibc/work/glibc-2.14.1/glibc-configure/elf/librtld.map.o
'-Wl,-(' /usr/pkgsrc/wip/glibc/work/glibc-2.14.1/glibc-configure/elf/dl-allobjs.os
/usr/pkgsrc/wip/glibc/work/glibc-2.14.1/glibc-configure/libc_pic.a
-lgcc '-Wl,-)' -Wl,-Map,/usr/pkgsrc/wip/glibc/work/glibc-2.14.1/glibc-configure/elf/librtld.mapT
/opt/zvi/x86_64-redhat-linux/bin/ld:
/usr/pkgsrc/wip/glibc/work/glibc-2.14.1/glibc-configure/libc_pic.a(init-first.os):(.data+0x0):
multiple definition of `__libc_multiple_libcs';
/usr/pkgsrc/wip/glibc/work/glibc-2.14.1/glibc-configure/elf/dl-allobjs.os:(.bss+0xf4):
first defined here
/opt/zvi/x86_64-redhat-linux/bin/ld:
/usr/pkgsrc/wip/glibc/work/glibc-2.14.1/glibc-configure/libc_pic.a(dl-addr.os):
in function `_dl_addr_inside_object':
dl-addr.c:(.text+0x353): multiple definition of
`_dl_addr_inside_object';
/usr/pkgsrc/wip/glibc/work/glibc-2.14.1/glibc-configure/elf/dl-allobjs.os:(.text+0x11d2e):
first defined here
collect2: error: ld returned 1 exit status
make[2]: *** [/usr/pkgsrc/wip/glibc/work/glibc-2.14.1/glibc-configure/elf/librtld.map]
Error 1
make[2]: Leaving directory `/usr/pkgsrc/wip/glibc/work/glibc-2.14.1/elf'
make[1]: *** [elf/subdir_lib] Error 2
make[1]: Leaving directory `/usr/pkgsrc/wip/glibc/work/glibc-2.14.1'
make: *** [all] Error 2
*** Error code 2

Stop.
bmake[1]: stopped in /usr/pkgsrc/wip/glibc
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/wip/glibc

This is what I'm using:
gcc version 7.5.0 (GCC)
GNU Make 3.81
GNU ld (GNU Binutils) 2.40
Linux  2.6.32-754.el6.x86_64
pkgsrc-2023Q2

For getting there, I bootstrapped pkgsrc with the system tools and the
compiled gcc7. Then, all the packages were made with gcc7 and combo.

Any hint, suggestion or advice would be very appreciated. Of course
I'm willing to provide more info if needed.

Best regards,


Alberto Mijares