kicad-developers team mailing list archive

[Dick Hollenbeck <dick@xxxxxxxxxxx>]

On 09/16/2011 03:32 PM, fabrizio wrote:
> I do simply run make, I do not really understand how this is not a
> problem but if you think so, it is all right with me.
>
> Just notice however that you will get about 420 files to patch
> eveytime i change one svg file. As long as you are fine with it, I am
> ok.
>
> cheers
> Fabrizio

Fabrizio,

Its possible you still have a mis-understanding.

It sounds like you are creating a new build directory each time.  Keep your build
directory, forever.  The first time you build Kicad, everything will get built. 
Thereafter only that which needs to get built will get built.  Makefile has dependencies
in it.

The discussion is the same regarding *.o files and *.png files.  They get built one time,
as they are needed to get built.  Then only when something upstream in their dependency
chain changes, will they get built again.

Here I show an example to prove it:

$ bzr up
$ cd build

# I have not been a PNG maintainer, but want to be for 10 minutes:
$ ccmake .

Set MAINTAIN_PNGS to on, configure, generate, quit ccmake.

# most all *.svg's have changed and those that are newer than my *.png's cause generation
of new *.png's, lets say most all of them this first time:

dick@dick-intel:/svn/kicad/testing.checkout/build$ make -j 5
[  0%] Creating 48 pixel tall /svn/kicad/testing.checkout/bitmaps_png/tmp/viewlibs_icon.png
[  0%] Built target kbool
Scanning dependencies of target 3d-viewer
[  0%] Built target polygon
[  0%] Building CXX object 3d-viewer/CMakeFiles/3d-viewer.dir/3d_aux.cpp.o
[  0%] Built target potrace
[  0%] Building CXX object 3d-viewer/CMakeFiles/3d-viewer.dir/3d_canvas.cpp.o
Scanning dependencies of target pcbcommon
Scanning dependencies of target common
[  0%] Building CXX object common/CMakeFiles/pcbcommon.dir/pcbcommon.cpp.o
[  0%] Building CXX object common/CMakeFiles/common.dir/dialog_about/AboutDialog_main.cpp.o
[  0%] Creating 26 pixel tall /svn/kicad/testing.checkout/bitmaps_png/tmp/add_arc.png
[  0%] Creating 26 pixel tall /svn/kicad/testing.checkout/bitmaps_png/tmp/add_bus2bus.png
[  0%] Creating 26 pixel tall /svn/kicad/testing.checkout/bitmaps_png/tmp/add_bus.png
[  0%] Creating 26 pixel tall /svn/kicad/testing.checkout/bitmaps_png/tmp/add_circle.png
[  0%] Building CXX object common/CMakeFiles/pcbcommon.dir/footprint_info.cpp.o
[  0%] Creating 26 pixel tall /svn/kicad/testing.checkout/bitmaps_png/tmp/add_component.png
[  0%] Creating 26 pixel tall /svn/kicad/testing.checkout/bitmaps_png/tmp/add_corner.png
[  0%] Building CXX object 3d-viewer/CMakeFiles/3d-viewer.dir/3d_class.cpp.o
[  0%] Building CXX object common/CMakeFiles/common.dir/dialog_about/dialog_about.cpp.o
[  0%] Building CXX object 3d-viewer/CMakeFiles/3d-viewer.dir/3d_draw.cpp.o
[  0%] Creating 26 pixel tall /svn/kicad/testing.checkout/bitmaps_png/tmp/add_dashed_line.png
[  0%] Creating 26 pixel tall /svn/kicad/testing.checkout/bitmaps_png/tmp/add_dimension.png
[  0%] Building CXX object common/CMakeFiles/pcbcommon.dir/class_layer_box_selector.cpp.o
[  0%] Building CXX object common/CMakeFiles/common.dir/dialogs/dialog_image_editor.cpp.o
[  0%] Creating 26 pixel tall /svn/kicad/testing.checkout/bitmaps_png/tmp/add_entry.png
[  0%] Building CXX object common/CMakeFiles/pcbcommon.dir/__/pcbnew/basepcbframe.cpp.o
[  0%] Creating 26 pixel tall /svn/kicad/testing.checkout/bitmaps_png/tmp/add_glabel.png
[  0%] Building CXX object 3d-viewer/CMakeFiles/3d-viewer.dir/3d_frame.cpp.o
[  0%] Building CXX object common/CMakeFiles/common.dir/dialogs/dialog_get_component.cpp.o
:
:
# lots more png's and cpp's are made, and all programs finish linking here
:


# Now I simulate editing a single *.svg file, by using touch to make its directory entry
newer than its *.png and its *.cpp:

dick@dick-intel:/svn/kicad/testing.checkout/build$ touch ../bitmaps_png/sources/bom.svg

# Now I build again:

dick@dick-intel:/svn/kicad/testing.checkout/build$ make -j 5
[  0%] Built target kbool
[  0%] Built target polygon
[  0%] Built target potrace
[  0%] Creating 26 pixel tall /svn/kicad/testing.checkout/bitmaps_png/tmp/bom.png
[  0%] Built target 3d-viewer
[  1%] Built target pcbcommon
[  4%] Built target common
[  4%] Creating /svn/kicad/testing.checkout/bitmaps_png/png_26/bom.png
[  4%] Creating /svn/kicad/testing.checkout/bitmaps_png/cpp_26/bom.cpp
Scanning dependencies of target bitmaps
[  4%] Building CXX object bitmaps_png/CMakeFiles/bitmaps.dir/cpp_26/bom.cpp.o
Linking CXX static library libbitmaps.a
[ 80%] Built target bitmaps
Linking CXX executable kicad
Linking CXX executable cvpcb
Linking CXX executable gerbview
[ 81%] Built target kicad
Linking CXX executable bitmap2component
[ 81%] Built target bitmap2component
Linking CXX executable pcb_calculator
[ 82%] Built target cvpcb
[ 83%] Built target pcb_calculator
Linking CXX executable eeschema
Linking CXX executable pcbnew
[ 85%] Built target gerbview
[ 91%] Built target eeschema
[100%] Built target pcbnew
dick@dick-intel:/svn/kicad/testing.checkout/build$

# Notice only the *single* bom.png and bom.cpp were built.  Nothing else.  The Makefile
seems sound, the CMake script seems fine.

# Now I revert all my *.cpp files back to those that I just got with *bzr update*, since I
really do not want to be a png maintainer, and go back simply living with the *.cpp files
that come in with each bzr update. 

# Note that the reason that many *.png's were built the first time is that they were not
checked into the repo, and so were older than the corresponding *.svg files, on my system
only.

# I don't want my next patch to include any of these *.cpp files.  If bom.cpp was new, I'd
do this slightly differently:

$ bzr revert ../bitmaps_png/cpp_*/*.cpp

$ make

only the bitmaps_png *.cpp files get compiled again here.

$ ccmake .

Turn off MAINTAIN_PNGS here, reconfigure, regenerate, quit.


Hope this helps,

Dick