[twobob]

a handy... Did I foof? test.

Don't expect fast results if you run 2 Gb of software...

root@kindle:root> readelf -s /mnt/us/usr/lib/* | grep -s "GLIBC_2\.7"

or readelf -s /mnt/us/usr/lib/*so* | grep -s "GLIBC_2\.7"

if the folder errors annoy you.

Spoiler:

readelf: Error: '/mnt/us/usr/lib/ImageMagick-6.7.8' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/alsa-lib' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/ao' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/apr-util-1' is not an ordinary file
readelf: Error: Unable to read in 0x2074 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: Unable to read in 0x4445 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: '/mnt/us/usr/lib/beecrypt' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/bellagio' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/cairo' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/cmake' is not an ordinary file
readelf: Error: Unable to read in 0x5320 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: '/mnt/us/usr/lib/directfb-1.4-6' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/efreet' is not an ordinary file
readelf: Error: Unable to read in 0x2066 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: '/mnt/us/usr/lib/engines' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/esmtp-plugins' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/evas' is not an ordinary file
readelf: Error: Unable to read in 0x2066 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: '/mnt/us/usr/lib/fonts' is not an ordinary file
readelf: Error: Unable to read in 0x5320 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: '/mnt/us/usr/lib/gdbus-2.0' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/gio' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/gstreamer-0.10' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/icu' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/imlib2' is not an ordinary file
readelf: Error: Unable to read in 0x2066 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: Unable to read in 0x666f bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: '/mnt/us/usr/lib/ldscripts' is not an ordinary file
215: 00000000 0 FUNC GLOBAL DEFAULT UND __isoc99_sscanf@GLIBC_2.7 (7)
215: 00000000 0 FUNC GLOBAL DEFAULT UND __isoc99_sscanf@GLIBC_2.7 (7)
215: 00000000 0 FUNC GLOBAL DEFAULT UND __isoc99_sscanf@GLIBC_2.7 (7)
113: 00000000 0 FUNC GLOBAL DEFAULT UND __isoc99_sscanf@GLIBC_2.7 (9)
113: 00000000 0 FUNC GLOBAL DEFAULT UND __isoc99_sscanf@GLIBC_2.7 (9)
113: 00000000 0 FUNC GLOBAL DEFAULT UND __isoc99_sscanf@GLIBC_2.7 (9)
39: 00000000 0 FUNC GLOBAL DEFAULT UND __isoc99_sscanf@GLIBC_2.7 (4)
39: 00000000 0 FUNC GLOBAL DEFAULT UND __isoc99_sscanf@GLIBC_2.7 (4)
39: 00000000 0 FUNC GLOBAL DEFAULT UND __isoc99_sscanf@GLIBC_2.7 (4)
54: 00000000 0 FUNC GLOBAL DEFAULT UND __isoc99_sscanf@GLIBC_2.7 (3)
54: 00000000 0 FUNC GLOBAL DEFAULT UND __isoc99_sscanf@GLIBC_2.7 (3)
54: 00000000 0 FUNC GLOBAL DEFAULT UND __isoc99_sscanf@GLIBC_2.7 (3)
readelf: Error: '/mnt/us/usr/lib/libxslt-plugins' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/mpg123' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/mysql' is not an ordinary file
readelf: Error: Unable to read in 0x5753 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: '/mnt/us/usr/lib/omxloaders' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/opkg' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/perl5' is not an ordinary file
readelf: Error: Unable to read in 0x5320 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: '/mnt/us/usr/lib/pulse-2.0' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/pulseaudio' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/python2.7' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/qt' is not an ordinary file
readelf: Error: Unable to read in 0x2066 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: '/mnt/us/usr/lib/ruby' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/sa' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/sigc++-2.0' is not an ordinary file
readelf: Error: '/mnt/us/usr/lib/tcl8.4' is not an ordinary file
readelf: Error: Unable to read in 0x6873 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: '/mnt/us/usr/lib/terminfo' is not an ordinary file
readelf: Error: Unable to read in 0x2066 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: Unable to read in 0x7972 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start
readelf: Error: Unable to read in 0x7261 bytes of section headers
readelf: Error: Not an ELF file - it has the wrong magic bytes at the start

so in this case you can see there would be trouble.
next up. finding exactly which files to rebuild (as STANDARD INPUT isn't very helpful as a file name hehehe)