[Open64-devel] Code review request for changes to support non-shared build [BUILD]

[David C. <dco...@gm...>]

The attached patch adds support for an experimental '--disable-shared'
configuration option.

This option is useful for avoiding the portability problems introduced
by the way Open64 uses shared objects.  For example, the use of static
initializers to bind pointers to functions (the "weak symbol
workaround") in the loading process does not work in Cygwin/Windows
environments.

In the non-shared build, the executables be, inline, whirl2c, and
whirl2f are standalone and do not load any shared objects other than
the standard system libraries.

Long term, I think building the compiler executables without shared
objects might be the way to go for all platforms.  The resulting
executables are easier to debug and the driver is simplified -- no
LD_LIBRARY_PATH.  And lots of ugly "weak symbol workaround" code could
be deleted.  But first ipa_link will need some changes in order to
work for the non-shared configuration; in this patch, the
--disable-shared option implies --disable-ipa.

Mike, your review would be appreciated since NVIDIA seems to have
encountered these same issues when porting some Open64 components to
Windows.  The details of the changes are in the attached msg.txt file.
 Thanks,

-David Coakley / AMD Open Source Compiler Engineering