Building older GLIBC on newer system

Question

I have a question and I hope some guru here could help me out :) My goal is simple : (GOAL1) build a older glibc on a newer system and (GOAL2) build old software that can run on older glibc. I am on gcc4.9, glibc2.19, amd64 system. I did compile glibc2.14 and gcc4.7.3 on my system.

(convention : /path/to/libc2.14_dir = $LIBC214, /path/to/gcc4.7.3 = $GCC473)

I am trying to compile bash4.2.53 ( and other softwares coreutil, binutil, qt3.3...) using newly built glibc2.14. My configure and make looks like this : ( I am being in object/build directory )

$ cd /path/to/build/bash-4.2.53
$ CC=$GCC473/bin/gcc CXX=$GCC473/bin/g++ CPP=$GCC473/bin/cpp \
   /path/to/source/bash-4.2.53/configure \
   --prefix=/path/to/installation/bash-4.2.53
$ make all V=1 \
   CFLAGS="-Wl,--rpath=$LIBC214/lib -Wl,--dynamic-linker=$LIBC214/lib/ld-linux-x86-64.so.2" \
   CPPFLAGS="-Wl,--rpath=$LIBC214/lib -Wl,--dynamic-linker=$LIBC214/lib/ld-linux-x86-64.so.2" \
   CXXFLAGS="-Wl,--rpath=$LIBC214/lib -Wl,--dynamic-linker=$LIBC214/lib/ld-linux-x86-64.so.2"

When make is done in bash4.2.53 build (object) directory, I tried 2 scenarios :

SCENARIO1. Use system's libc2.19

$ ldd ./bash
   linux-vdso.so.1 (0x00007ffe677c3000)
   libtinfo.so.5 => $MY_PREBUILT_NCURSE/lib/libtinfo.so.5 (0x00007f5d108e3000)
   libdl.so.2 => $LIBC214/lib/libdl.so.2 (0x00007f5d106df000)
   libc.so.6 => $LIBC214/lib/libc.so.6 (0x00007f5d10354000)
   $LIBC214/lib/ld-linux-x86-64.so.2 => /lib64/ld-linux-x86-64.so.2 (0x00007f5d10b0a000)

This line is weird :$LIBC214/lib/ld-linux-x86-64.so.2 => /lib64/ld-linux-x86-64.so.2 (0x00007f5d10b0a000)

$ $LIBC214/bin/ldd ./bash
   not a dynamic executable

SCENARIO2. Add $LIBC214/bin to my PATH, $LIBC214/lib to my LD_LIBRARY_PATH

$ ldd ./bash
/bin/bash: $LIBC214/lib/libc.so.6: version `GLIBC_2.15' not found (required by /bin/bash)
$ export SHELL=$PWD/bash
$ ldd --version
/bin/bash: $LIBC214/lib/libc.so.6: version `GLIBC_2.15' not found (required by /bin/bash)
$ ldd ./bash
/bin/bash: $LIBC214/lib/libc.so.6: version `GLIBC_2.15' not found (required by /bin/bash)

As far as I can tell, SCENARIO2 is the right way to run commands. My assumption is that I built glibc2.14 wrongly, that it uses /bin/bash which in turn uses glibc2.19. I am not really sure.

My question:

Could you please explain for me the weird line above and the following line that out put not a dynamic executable?
Could you share me your steps to properly build glibc (GOAL1) and build software using that glibc (GOAL2) ?
What could I do next to solve 2 above scenario?

Thank you.

Building older GLIBC on newer system

1 Answers