I don't think you need to explicitly include the .config file [in case you're doing that]. Running the build should create those vars cleanly.
On Fri, Jan 23, 2015 at 2:53 PM, Mats Karrman <mats.dev.l...@gmail.com> wrote: > Thanks for your help! > > I was actually working on something similar to your (2), using CONFIG_ > variables but there were some trouble with the logic behind including the > .config file and then also, all string options are exported with "quotes" > around them and that messed up the DEPENDENCY declaration. > > BR // Mats > > > On 2015-01-23 08:18, Alexandru Ardelean wrote: > > Well, you need to specifiy Ax in the DEPENDS section of B. > Since there are 3 Ax, you can do it 2 ways: > > 1) Create Bx (x = 1-3) packages; B1 depends on A1, B2 depends on A2, B3 > depends on A3; so, if you select the correct Bx, the correct Ax will also > get built. > You can also use build variants to keep Bx in a single Makefile; you can > check the package/ncurses/Makefile for hints. > The build variants does not seem too popular, but you can try it. > > 2) In the Makefile of B you can do a "dynamic" DEPENDS. > Before the package definition (i.e. define Package/B ) you can add a > A_DEPENDS variable. > You can do something like: > ifeq ($(A_DEPENDS),) > ifeq ($(CONFIG_A1),y) > A_DEPENDS := A1 > endif > endif > ifeq ($(A_DEPENDS),) > ifeq ($(CONFIG_A2),y) > A_DEPENDS := A2 > endif > endif > ifeq ($(A_DEPENDS),) > ifeq ($(CONFIG_A3),y) > A_DEPENDS := A3 > endif > endif > A_DEPENDS should equal to either A1, A2 or A3, if either is selected. > Note that CONFIG_Ax is as defined in the .config file. > Then > define Package/B > DEPENDS:= ............ $(A_DEPENDS) > endef > > If I look at this approach, it does what you asked for. > But all in all, I would say there would be a cleaner approach if Ax and B > are known. > > If the assumption would be that Ax are similar packages (or variants of > a base A), then I'd make a single package A, and define some options to it. > Based on those options A would be a variation of type Ax (x = 1 - 3). > Then > define Package/B > DEPENDS:= ............ A > endef > > And you can configure A with whatever options you need. > > > On Thu, Jan 22, 2015 at 8:34 PM, Mats Karrman <mats.dev.l...@gmail.com> > wrote: > >> Hi, >> >> I'm struggling with a problem and I can't really get it to work as I want. >> >> Say you have 3 packages, A1, A2 and A3, that all provide the include file >> "f.h". >> I also have package B that build-time depends on "f.h". >> >> I will enable either A1, A2 or A3 in the .config for a build but how do I >> make >> OpenWRT understand that it cannot build B until either of Ax is built? >> >> I'd be ever so greatfull for some good hints on how to solve this. >> >> (and oh, I'm on "Attitude-Adjustment") >> >> Best regards, >> Mats >> _______________________________________________ >> openwrt-devel mailing list >> openwrt-devel@lists.openwrt.org >> https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel >> > > >
_______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
