Re: [PATCH] libtool: minimise forks per invocation on cygwin and mingw.

[Peter O'Gorman]

On 12/08/2011 08:03 AM, Gary V. Vaughan wrote:

> > Any additional forks will slow down the script and should be avoided on all 
> > platforms.
>
> Agreed.

Following up just because "slow down" is not a number:

touch a.c
time (for x in {1..100}; do ./libtool --mode=compile --tag=CC gcc -c -o 
a.lo a.c; done)

Some older libtool that was sitting there.
libtool (GNU libtool 1.3337 2011-10-17) 2.4.3a
real    0m12.061s user    0m5.062s sys     0m4.219s
real    0m11.483s user    0m5.039s sys     0m4.187s
real    0m11.665s user    0m5.057s sys     0m4.292s
real    0m11.524s user    0m4.997s sys     0m4.239s
real    0m11.496s user    0m5.055s sys     0m4.172s
real    0m11.580s user    0m5.080s sys     0m4.219s

Just bootstrapped from today:
libtool (GNU libtool) 2.4.2.138-f7bd6-dirty
real    0m12.002s user    0m5.206s sys     0m4.371s
real    0m12.071s user    0m5.289s sys     0m4.336s
real    0m11.972s user    0m5.243s sys     0m4.342s
real    0m11.963s user    0m5.267s sys     0m4.273s
real    0m12.069s user    0m5.216s sys     0m4.421s
real    0m12.054s user    0m5.234s sys     0m4.379s

Peter