>From the recent discussion about WINVER, which is as the name implies Windows-
specific. I looked at what would be needed for a universal way of making the
platform selector more specific with version numbers.
On Unix-ish systems this would be the output of `uname -r`. For Windows, it's
found by parsing the output of `ver`. Unless there's a way to get the specific
version more directly. I think there is but it uses WMI and would involve
either JScript/VBScript or PowerShell.
The platform table in a rockspec would contain keys naming the operating
system, as always. But along with just the builtin names "linux", "solaris",
"windows" etc., the table keys can have version specifiers like dependency
strings. i.e. "windows >= 5.1" for Windows XP or later.
Additionally, I think the output of `uname -s` could be included in the
platform list. Right now, LR detects the OS and builds a list of predefined
names. Instead, for example, Cygwin on Windows 7 would have an OS version
"1.7.16(0.262/5/3)" and the system names {"unix","cygwin","CYGWIN_NT-6.1"}.
Matching the system then would not be just a string compare, but a case-
insensitive pattern match anchored at the start of the string. (In fact, the
second name, "cygwin", is redundant.)
It doesn't look like the builtin build backend exposes the architecture, so
add that to the platform override as well. The keys of the platform table
would have the form:
system [COND version] [arch]
or
'*' arch
Also, cfg.lua is getting crowded with platform specific information. Should
all the "if detected.foo" blocks be moved out to platform/foo.lua and pulled
in with require?
--
tom <tellia...@whoopdedo.org>
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