[yocto] Could not find glib.h

[Andreas Müller]

On Thu, May 2, 2019 at 12:32 AM JH <jupiter.hce at gmail.com> wrote:
>
> Hi Andreas,
>
> It was my program, it has been compiled for weeks without any issues
> until I added an #include <glib.h>, despite the glib-2.0 was defined
> in the recipe, the do_compile() stopped at following errors, I can see
> glib-2.0 was built in build and image directory, I can see glib.h was
> in build and image directory, is it a basic principle if a package
> library was defined in DEPENDS, the bitback should automatically find
> the header files and library links? Why it still complained no such
> file?
>
> DEPENDS += "glib-2.0"
> RDEPENDS += "glib-2.0"
^ In case your program links successfully this can go

you could write

do_compile() {
    CFLAGS="${CFLAGS} `pkg-config --cflags glib-2.0`"
    LDFLAGS="${LDFLAGS} `pkg-config --libs glib-2.0`"
    oe_runmake -e
}

Or similar in your Makefile

And and don't forget

inherit pkgconfig

in your recipe

Andreas


>
> do_compile() {
>     oe_runmake -e
> }
>
>
> fatal error: glib.h: No such file or directory #include <glib.h>
>
>    ^~~~~~~~
> compilation terminated.
>
> Thank you.
>
> Kind regards,
>
> - jupiter
>
>
>
>
> On 5/1/19, Andreas Müller <schnitzeltony at gmail.com> wrote:
> > On Wed, May 1, 2019 at 12:35 PM JH <jupiter.hce at gmail.com> wrote:
> >>
> >> Thanks Richard, where to run pkg-config? If I run pkg-config in the
> >> host, it pointed to host Ubuntu package which is different to the
> >> cross compiler.
> >>
> >> On 5/1/19, Richard Purdie <richard.purdie at linuxfoundation.org> wrote:
> >> > On Wed, 2019-05-01 at 10:43 +1000, JH wrote:
> >> >> Hi,
> >> >>
> >> >> I added glib-2.0 to DEPENDS but it still could find the glib.h, what
> >> >> I
> >> >> could be missing here?
> >> >>
> >> >> fatal error: glib.h: No such file or directory
> >> >> >  #include <glib.h>
> >> >> >           ^~~~~~~~
> >> >> > compilation terminated.
> >> >
> >> > You probably need to use pkg-config to find out which CFLAGS to use for
> >> > glib-2.0...
> >> >
> > Maybe I missed something but there is not much information about what
> > you are trying to build. Starts with build system: autotools / cmake /
> > meson / qmake / waf?
> >
> > Is there a place to look into the recipe? That might make support easier.
> >
> > Andreas
> >