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| <== Date ==> | <== Thread ==> |
|---|
| Subject: | Re: EPICS 7.0.1-pre1 -- vxWorks 6.2 |
| From: | Dirk Zimoch <[email protected]> |
| To: | Mark Rivers <[email protected]>, "[email protected]" <[email protected]> |
| Date: | Thu, 30 Nov 2017 09:44:47 +0100 |
On 29.11.2017 22:13, Mark Rivers wrote:
On 29.11.2017 01:05, Andrew Johnson wrote:Hi Timo, On 11/28/2017 10:46 AM, Timo Korhonen wrote:Referring to Dirk's request earlier in this chain: So it would be nice to have an option in one of the CONFIG files to declare that a specific architecture should build EPICS 7 without PVA support. If I understand the intention right, he would like to be able to build the EPICS 7 base for many architectures but so that not all of them are required to support PVA. I think that is a legitimate request: this way he can keep up with the other updates in the base and does not have to abandon (at least immediately) those architectures that are not able to support PVA. I think this could make the adoption of EPICS 7 easier not only for Dirk but for other sites, too. The change does not look impossible to me.I agree that this is worthwhile goal, but I'm not sure how easy it will be to implement at this stage. The complication is that GNUmake descends through the tree just once, and it's not until it gets to the bottom Makefiles that it decides which target architectures to compile the code for. I don't want to have to edit every Makefile and put a conditional test in them, but I might be able to do something in the modules' own configure/CONFIG files. I can't promise anything for the -rc1, but I will try to implement something for the final release if I can do so cleanly. - AndrewI will try to implement something. My first attempt failed for the reason Andrew outlined. It is not possible to simply skip the all PVA modules for a specific T_A because at that time T_A is not yet defined. A flag needs to be checked inside every module. DirkThis is a pain. I have had to do it in ADSupport for all of the libraries (TIFF, JPEG, GraphicsMagick, HDF5, etc.). In GraphicsMagick alone there were 13 Makefiles where I added lines like this: ifeq ($(WITH_GRAPHICSMAGICK),YES) ifeq ($(GRAPHICSMAGICK_EXTERNAL),NO) LIBRARY = wmf ... It would have been very nice to put that logic in a single Makefile above GraphicsMagickSrc, but it does not seem to be possible with gnumake. Mark
WITH_GRAPHICSMAGICK_linux-x86 = YES WITH_GRAPHICSMAGICK_vxWorks-ppc604 = NO WITH_GRAPHICSMAGICK = $(WITH_GRAPHICSMAGICK_$(T_A)) LIBRARY_WITH_GRAPHICSMAGICK_YES = wmf LIBRARY += $(LIBRARY_WITH_GRAPHICSMAGICK_$(WITH_GRAPHICSMAGICK))