CODEWITHSUNDEEP
includecross-compilingyoctobitbake
Tagadac
Tagadac

Reputation: 423

Yocto gcc cannot find reference to function from shared library

I have written a package containing 3 files : foo.c, foo.h and README.TXT. Here is the recipe :

DESCRIPTION = "foo Drivers"
#To prevent the LICENSE field not set
LICENSE = "CLOSED"
PR = "r0"

SRC_URI = "file://foo.c \
       file://foo.h \
           file://README.txt"

FILES_${PN} += "${incdir}/foo.h"

do_compile() {
        ${CC} ${CFLAGS} ${LDFLAGS} ${WORKDIR}/foo.c -o foo
}

do_install() {
        install -m 0755 -d ${D}${bindir} ${D}${docdir}/foo ${D}${incdir}
        install -m 0755 ${S}/foo ${D}${bindir}
        install -m 0755 ${WORKDIR}/README.txt ${D}${docdir}/foo
        install -m 0755 ${WORKDIR}/foo.h ${D}${incdir}
}

But when I do bitbake foo I have this error :

WARNING: foo-0.0-r0 do_package: QA Issue: foo: Files/directories were installed but not shipped in any package:
  /foo.h
Please set FILES such that these items are packaged. Alternatively if they are unneeded, avoid installing them or delete them within do_install.
foo: 1 installed and not shipped files. [installed-vs-shipped]

And because of this, in an another package depending on foo, when I add in the recipe : DEPENDS = "foo", I have this error : 

fatal error: foo.h: No such file or directory

The error is from the line #include <foo.h>.

Thank you for your help !

EDIT:

install -m 0755 ${WORKDIR}/foo.h ${D}${includedir}

Resolved the warning problem but I still have :

fatal error: foo.h: No such file or directory

When I want to compile a package depending on foo.h

EDIT2: I have changed the bblayer of my foo package to create a .so shared library, like so :

DESCRIPTION = "foo driver"
#To prevent the LICENSE field not set
LICENSE = "CLOSED"
PR = "r70"

SRC_URI = "file://foo.c \
           file://foo.h \
           file://README.txt"

CFLAGS_append =" -fPIC -g -c -Wall "

FILES_${PN} += "${libdir}/* ${libdir}/pkgconfig/*"

do_compile() {
    ${CC} ${CFLAGS} ${LDFLAGS} ${WORKDIR}/foo.c -o foo
    ${CC} -shared -Wl,-soname,${WORKDIR}/libfoo.so.1 \
        -o ${WORKDIR}/libfoo.so.1.0.1 foo -lc

}

do_install() {

    install -m 0755 -d ${D}${bindir} ${D}${libdir} ${D}${docdir}/foo ${D}${includedir} ${D}${libdir}/pkgconfig
    install -m 0755 ${S}/foo ${D}${bindir}
    install -m 0755 ${WORKDIR}/README.txt ${D}${docdir}/foo
    install -m 0755 ${WORKDIR}/foo.h ${D}${includedir}
    install -m 0755 ${WORKDIR}/libfoo.so.1.0.1 ${D}${libdir}
    ldconfig -n ${D}${libdir}
}

But in my Test package, even if I add #include <foo.h> and DEPENDS = "pjproject gpio" RDEPENDS_${PN} += "gpio" I have error: undefined reference to function coming from foo.h. here is my test bblayer :

DESCRIPTION = "test"
LICENSE = "CLOSED"

PR = "r2"

SRC_URI = "file://main.c \
           file://Makefile \
           file://README.txt"

S = "${WORKDIR}/"

DEPENDS = "gpio"
RDEPENDS_${PN} += "gpio"


do_compile() {
        cd ${S}
        oe_runmake
}

do_install() {
        install -m 0755 -d ${D}${bindir} ${D}${docdir}/test
        install -m 0755 ${S}/test ${D}${bindir}
        install -m 0755 ${WORKDIR}/README.txt ${D}${docdir}/test
}

And if I add -lfoo in my Makefile, I have /bin/sh: 1: -lfoo: not found.


Why ? thank you for your help !

Upvotes: 1

Views: 2167

Answers (1)

Jussi Kukkonen
Jussi Kukkonen

Reputation: 14577

install -m 0755 ${WORKDIR}/foo.h ${D}${incdir}

this should be 

install -m 0755 ${WORKDIR}/foo.h ${D}${includedir}

You can see in the QA warning message how your header got installed into / instead of /usr/include/.

You should also remove the FILES_{PN} line: it's wrong (because headers go into -dev package) and not needed as the right thing should be done by default.

Upvotes: 3

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