This section contains notes and hints specific to installing PHP on Solaris systems.
Solaris installs often lack C compilers and their related tools. The required software is as follows:
gcc (recommended, other C compilers may work)
make
flex
bison
m4
autoconf
automake
perl
gzip
tar
You can simplify the Solaris install process by using pkgadd to install most of your needed components.