gdb debug with different library path

$ gdb
(gdb) set solib-absolute-prefix ./libdir
(gdb) file ./a.out
(gdb) core-file ./a.core

how to cross compile openssl

http://openssl.6102.n7.nabble.com/cross-compiling-questions-td21307.html

srpms introduction

http://www.rpm.org/max-rpm/s1-rpm-miscellania-srpms.html

http://crashcourse.ca/content/working-source-rpms-under-centos

echo '%_topdir %(echo $HOME)/rpmbuild' > ~/.rpmmacros

extract source rpms

1. rpm2cpio - Extract cpio archive from RPM Package Manager (RPM) package.
2. copy files to and from archives

rpm2cpio | cpio -id