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Re: Precompiled Headers, PB and gcc 3.3

Subject: Re: Precompiled Headers, PB and gcc 3.3
From: Devang Patel <email@hidden>
Date: Wed, 25 Jun 2003 20:16:12 -0700

On Wednesday, June 25, 2003, at 4:30 PM, email@hidden wrote:

23 wrote:
| Has anyone managed to use pre-compiled headers with the Project Builder
| and the update to gcc? I'm assuming that it is not going to work with
| the standard UI and will require some sort additional build step? The
| compile time for my project is nearly unbearable without pre-comps!

Apple's said that the precompiled headers mechanism has changed with 3.3, so what's probably needed is just the equivalent of the old `sudo fixPrecomps -force -all` fix. Unfortunately, Apple seems not to be willing to tell anyone what the new equivalent is. (Has anyone actually *tried* fixPrecomps since installing the update?)

There is no equivalent. fixPrecomps does do anything for GCC 3.3. Old IDE (PB) and new compiler (GCC 3.3) combination does not use any of pre-compiled header model. (Because Old IDE does not know about new compile and new compiler replaces older precomps with PCH invalidating old IDE's knowledge).

XCode is required to get the speed using GCC 3.3's pre-compiled header aka PCH.
GCC 3.3 release notes explains how to use PCH on the command line.

-Devang
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References:
	>Precompiled Headers, PB and gcc 3.3 (From: 23 <email@hidden>)

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