More than one version of the HP aC++ compiler
can be installed on one system at the same time. The floating installation
feature allows you to install the compiler in any location. You can
install as many compiler versions as required, depending on your
system’s resources.
HP aC++ |
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By default, HP aC++ is installed under the /opt/aCC directory. In earlier releases, the compiler driver
(aCC) looked for related files in subdirectories of
the /opt/aCC directory. This prevented installation of more than
one version of HP aC++ on the same system at the same time.
Only files in /opt/aCC are affected by floating installation. Regardless
of the HP aC++ driver you use, the compiler still uses the libraries,
linker, and other files located in /usr/lib and /usr/ccs.
Floating installation is designed to help facilitate in-house
development. You must not ship libraries in non-standard places,
because explicit runtime library specifications and linker options
are required.
You can use the __HP_aCC predefined macro to determine which version is being
run.
HP C |
|
By default, HP C is installed under the /opt/ansic directory. In earlier releases, the compiler driver
(cc) looked for related files in subdirectories of
the /opt/ansic directory. This prevented installation of more than
one version of HP C on the same system at the same time.
Only files in /opt/ansic are affected by floating installation. Regardless
of the HP C driver you use, the compiler still uses the libraries,
linker, and other files located in /usr/lib and /usr/ccs.
Floating installation is designed to help facilitate in-house
development. You must not ship libraries in non-standard places,
because explicit runtime library specifications and linker options
are required.
You can use the __HP_cc predefined macro to determine which version is being
run.
Setting
up Floating Installation |
|
You may want to install the most recent compiler version and
keep the prior version on one system. If there are problems with
the most recent version, you can easily switch to the prior one.
Following is an example of how to set up the floating installation
feature for this purpose. Assume that your system will have two
versions of the compiler, both floating install enabled. In this
case, A.05.50 is the prior version, and A.05.60 or A.06.00 is the
more recent version.
To setup floating installation, complete the following steps:
Copy the prior version to another directory.
cp -rp /opt/aCC /opt/aCC.05.55
Use swinstall to install the new version (A.06.00 or A.05.60 in this
case).
Printable version
