Bernd wrote:
2012/3/21 Mark Morgan Lloyd <[email protected]>:
On Linux x86 (Debian "Squeeze") with gtk2, freshly-created minimal project
with full optimisation, no debug, optimise for minimum size and smart
linking comes to 3,459,960 bytes.
That's... such a disparity from what I've been told to expect that I'd
appreciate any suggestions as to where I should be looking for problems.
You must be doing something wrong. On i386-linux/GTK2 with everything
smart-linkable and smart-linked and stripped I get 2MB (2113600 bytes)
for a minimal application with only one button and one label.
(everything compiled with -g- -O3 -CX -XX -Xs)
With upx the 2MB go down to 700kB, without smart-linking I get around 4MB.
I've never looked at upx, but possibly I ought. Don't think it supports
Solaris though, or SPARC.
Make sure while you are compiling your project in Lazarus you also
have -CX in the options of the "build lazarus" Dialog because
otherwise when compiling your project it will automatically
(re-)compile the LCL without smartlinking. It will always recompile
(if necessary) the LCL and all dependent units with the settings that
are currently active for "build lazarus" whenever you compile a
project.
I've complained about that rebuild in the past... all of a sudden it's
starting to look useful.
(I discovered this by accident but it is quite useful: I always
thought I had to explicitly recompile the entire Lazarus after
changing these options but it is enough to just change the options and
then only recompile your project)
OK. So starting off with an FPC 2.6.0 which has been compiled with
OPT='-O3 -Os -CX -XX', I do a command-line build of Lazarus trunk as
bigide without explicit options. Output shows that compiler command
lines appear to be similar to
ppc386 -MObjFPC -Scghi -O1 -g -gl -vewnhi -l -dLCL -dLCLgtk2 -Fu ...
-di386 lazcontrols.pas
i.e. there's no explicit reference to smartlinking (should I be adding
something here, and if so how?)
I add -CX to the build options inside the IDE, set up a virgin project
and build it. Binary size is 2,161,352 bytes.
So what appears to be happening is that on Linux (and possibly other
unix) a make bigide results in an LCL etc. that isn't smartlinkable,
and the only way to get it is to insert -CX in the IDE's Tools ->
Configure "Build Lazarus" setup, despite the fact that the user isn't
intentionally rebuilding.
I wonder where that leaves somebody who is trying to build a project
with lazbuild, i.e. never using the IDE?
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
--
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