ERROR with rpm_check_debug vs depsolve:
libgmp.so.3()(64bit) is needed by php54-5.4.37-1.ius.centos5.x86_64
libgmp.so.3()(64bit) is needed by php54-cli-5.4.37-1.ius.centos5.x86_64
Complete!
(1, [u'Please report this error in http://bugs.centos.org/yum5bug'])
We need gmp-devel.x86_64 to suppress this fatal warning.
12345
$ yum search gmp
gmp.i386 : A GNU arbitrary precision library.
gmp.x86_64 : A GNU arbitrary precision library.
gmp-devel.i386 : Development tools for the GNU MP arbitrary precision library.
gmp-devel.x86_64 : Development tools for the GNU MP arbitrary precision library.
Install gmp-devel, it should also pull in gmp and libstdc++: