Hi All,
I did not find the difference between /O2 and /Ox (please see some
benchmarks below). However, the code is about twice faster than
without any optimization flags.
Like VS2008 "/O2" and "/Ox", MinGW/GCC has the "-O2" and "-O3" flags.
(http://gcc.gnu.org/onlinedocs/gcc-3.4.6/gcc/Optimize-Options.html#Optimize-Options)
And, like Andrew in VS2008, i didn't see performance difference between
GCC -O2 and -O3, but a lot of warnings for using the -O3 flag can be
found on the web. So, in MinGW/GCC builds may be a good idea mantain a
good and safe "-O2" cflag.
When Xypron release an "/O2" version of winglpk i'll make some
benchmarks again.
> Have you created MinGW build files with ODBC
> support? This would be helpful.
I didn't use ODBC. But after your point i've build glpk with ODBC
support from MinGW - and make a successful connect to an ms excel
database!
Xypron, the excel connection was a valid ODBC connection test? Can we
say that ODBC support in GLPK MinGW/GCC build is OK?
Thanks!
Luiz Bettoni
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