Currently, Google uses hp unix 4.3.2 for installation.
I found out how to install 4.5.2.
1. Go to the HP official website to download the latest GCC compiler, many of which I chose 4.5.2.
Http://h21007.www2.hp.com/portal/site/dspp/menuitem.863c3e4cbcdc3f3515b49c108973a801? Ciid = 2a08725cc2f021da-25cc2f02110275d6e10rcrd
Then download the software package (I will download it from http://hpux.connect.org.uk,
Gettext-0.17-hppa-11.11.depot.gz
Libiconv-1.13-hppa-11.11.depot.gz
Zlib-1.2.3-hppa-11.11.depot.gz
Save to/tmp
2. Extract
Gunzip/tmp/* GZ
3. Run the following commands as root:
Swinstall-S/tmp/zlib-1.2.3-hppa-11.11.depot zlib
Swinstall-S/tmp/ibiconv-1.13-hppa-11.11.depot biconv
Swinstall-S/tmp/gettext-0.17-hppa-11.11.depot gettext
Swinstall-S/tmp/libgcc-4.2.3-hppa-11.11.depot libgcc
Swinstall-S/tmp/gcc-4.5.2-hppa-11.11.depot gcc
4. Add export Path = $ path:/usr/local/bin to the user. profile file.