[bitbake-devel] need help to write a recipe to link a static library to my application

[Viditha Murahari]

Figured out the issue, it was actually a silly mistake

${CC} ${CFLAGS} ${LDFLAGS} rttapp.c -o rttapp
should have been
${CC} rttapp.c ${CFLAGS} ${LDFLAGS} -o rttapp

On Mon, Jul 24, 2017 at 10:41 AM, Viditha Murahari <
viditha at mpconsultants.org> wrote:

> Hello Khem Raj,
>
> I did a bitbake -e -c compile -f rttapp  , and this is how my  do_c0mpile
> command looks
>
> do_compile() {
>         arm-poky-linux-gnueabi-gcc  -march=armv7ve -mfpu=neon
>  -mfloat-abi=hard -mcpu=cortex-a7 --sysroot=/home/jeesu/viditha/
> imx6ul-evk-audio/build/tmp/sysroots/imx6ulevk
>  -I/home/jeesu/viditha/imx6ul-evk-audio/build/tmp/work/corte
> xa7hf-neon-poky-linux-gnueabi/rttapp/1.0-r1/include -DPJ_AUTOCONF=1
> -DPJ_IS_BIG_ENDIAN=0 -DPJ_IS_LITTLE_ENDIAN=1 -O2 -pipe -g
> -feliminate-unused-debug-types -fdebug-prefix-map=/home/jeesu
> /viditha/imx6ul-evk-audio/build/tmp/work/cortexa7hf-
> neon-poky-linux-gnueabi/rttapp/1.0-r1=/usr/src/debug/rttapp/1.0-r1
> -fdebug-prefix-map=/home/jeesu/viditha/imx6ul-evk-audio/
> build/tmp/sysroots/x86_64-linux= -fdebug-prefix-map=/home/jeesu
> /viditha/imx6ul-evk-audio/build/tmp/sysroots/imx6ulevk=  -Wl,-O1
> -Wl,--hash-style=gnu -Wl,--as-needed -L/home/jeesu/viditha/imx6ul-e
> vk-audio/build/tmp/work/cortexa7hf-neon-poky-linux-gnueabi/rttapp/1.0-r1/lib
> -lpjsua2-arm-poky-linux-gnueabi -lstdc++ -lpjsua-arm-poky-linux-gnueabi
> -lm -lrt -lpthread -lasound rttapp.c -o rttapp
> }
>
> and i tried
>
> ls /home/jeesu/viditha/imx6ul-evk-audio/build/tmp/work/cortexa7
> hf-neon-poky-linux-gnueabi/rttapp/1.0-r1/lib
>
> jeesu at MPCLinux:~/viditha/imx6ul-evk-audio/build/tmp/work/
> cortexa7hf-neon-poky-linux-gnueabi/rttapp/1.0-r1/lib$ ls
>
>
> libg7221codec-arm-poky-linux-gnueabi.a
> libgsmcodec-arm-poky-linux-gnueabi.a
> libilbccodec-arm-poky-linux-gnueabi.a
> libpj-arm-poky-linux-gnueabi.a
> libpjlib-util-arm-poky-linux-gnueabi.a
> libpjmedia-arm-poky-linux-gnueabi.a
> libpjmedia-audiodev-arm-poky-linux-gnueabi.a
> libpjmedia-codec-arm-poky-linux-gnueabi.a
> libpjmedia-videodev-arm-poky-linux-gnueabi.a
> libpjnath-arm-poky-linux-gnueabi.a
> libpjsip-arm-poky-linux-gnueabi.a
> libpjsip-simple-arm-poky-linux-gnueabi.a
> libpjsip-ua-arm-poky-linux-gnueabi.a
> libpjsua2-arm-poky-linux-gnueabi.a
> libpjsua-arm-poky-linux-gnueabi.a
> libresample-arm-poky-linux-gnueabi.a
> libspeex-arm-poky-linux-gnueabi.a
> libsrtp-arm-poky-linux-gnueabi.a
> pkgconfig
>
> It looks like -L in my compile command is pointing to the right location
> for my libraries. So im not clear what im missing. Please help.
>
> On Fri, Jul 21, 2017 at 7:25 PM, Khem Raj <raj.khem at gmail.com> wrote:
>
>>
>> On Fri, Jul 21, 2017 at 6:43 PM Andre McCurdy <armccurdy at gmail.com>
>> wrote:
>>
>>> On Fri, Jul 21, 2017 at 12:11 PM, Viditha Murahari
>>> <viditha at mpconsultants.org> wrote:
>>> > I'm new to yocto and bitbake and I'm building a voip application for a
>>> > custom imx6 board. I want to use  pjsip libraries to build my
>>> application, I
>>> > have compiled pjsip in my yocto build and generated pjsip libraries (
>>> all
>>> > pjsip libraries r static). I'm having issues building a recipe for my
>>> > application that calls the pjsip functions. Below is how my recipe
>>> looks
>>> >
>>> >
>>> > Filename: rttapp.bb
>>> >
>>> > DESCRIPTION = "Simple voip application"
>>> > SECTION = "examples"
>>> > LICENSE = "MIT"
>>> > LIC_FILES_CHKSUM
>>> > ="file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ec
>>> da2f7b4f302"
>>> > PR = "r1"
>>> >
>>> > SRC_URI += "file://rttapp.c"
>>> > SRC_URI += "file://include"
>>> > SRC_URI += "file://lib"
>>> >
>>> > S = "${WORKDIR}"
>>> >
>>> > CFLAGS_prepend += "-I${WORKDIR}/include -DPJ_AUTOCONF=1
>>> -DPJ_IS_BIG_ENDIAN=0
>>> > -DPJ_IS_LITTLE_ENDIAN=1"
>>> > LDFLAGS_append += "-L${WORKDIR}/lib -lpjsua2-arm-poky-linux-gnueabi
>>> -lstdc++
>>> > -lpjsua-arm-poky-linux-gnueabi -lm -lrt -lpthread -lasound"
>>> >
>>> > do_compile() {
>>> > ${CC} ${CFLAGS} ${LDFLAGS} rttapp.c -o rttapp
>>>
>>> Try splitting this into two commands. First compile rttapp.c to
>>> rttapp.o and then link the final application as a second step. When
>>> linking the application, ensure that rttapp.o is listed on the command
>>> line before the libraries which provide the symbols it requires.
>>>
>>> > }
>>> >
>>> >
>>> > When i do bitbake rttapp, the error i see is as below
>>> >
>>> >
>>> > Log data follows:
>>> > DEBUG: Executing shell function do_compile
>>> > /tmp/cc6nn4Dp.o: In function `main':
>>> > /usr/src/debug/rttapp/1.0-r1/rttapp.c:159: undefined reference to
>>> > `pjsua_create'
>>> > collect2: error: ld returned 1 exit status
>>> > WARNING: exit code 1 from a shell command.
>>> >
>>> >
>>> > Please advise
>>
>>
>> You are not having the said libraries in your workdir ensure that either
>> you have them via fetcher or via depends
>>
>>>
>>> >
>>> > --
>>> > _______________________________________________
>>> > bitbake-devel mailing list
>>> > bitbake-devel at lists.openembedded.org
>>> > http://lists.openembedded.org/mailman/listinfo/bitbake-devel
>>> >
>>> --
>>> _______________________________________________
>>> bitbake-devel mailing list
>>> bitbake-devel at lists.openembedded.org
>>> http://lists.openembedded.org/mailman/listinfo/bitbake-devel
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openembedded.org/pipermail/bitbake-devel/attachments/20170725/6b068849/attachment-0002.html>