[yocto] eclipse-poky: Can't build from Eclipse, but command line build works

[Minchev, Todor]

Hello Bryan,

On Wed, 2015-03-11 at 13:45 +0000, Bryan Evenson wrote:
> I am trying to get the Yocto Eclipse plug-in setup so that I can build my application from Eclipse.  I am *almost* there, but the final build is not working.  I'm assuming there are some path/rights issues somewhere in the chain because I can build from the command line.  I'm looking for some help in figuring out where the difference is.
> 
> I am using Fedora 21 64-bit for a host system.  I am using Eclipse Kepler; I also have Eclipse Luna installed, but I had to install Eclipse Kepler since another plugin I am using does not yet have support for Eclipse Luna.  I am on poky/daisy HEAD and have been able successfully build my image (image based on core-image-minimal with a few extra applications).  Under Eclipse Kepler, I installed the pre-build plug-in from the Yocto Eclipse Update Site as instructed in the Yocto Project Development Manual for Poky 1.6.2.  I am using my existing toolchain in the build directory, so I issued "bitbake meta-ide-support" to generate the cross-toolchain support.  I then followed the instructions under "Extracting the Root Filesystem" in the ADT Manual to extract the root filesystem.  Specifically, I sourced the newly created environment script and then called "runqemu-extract-sdk <my_built_image.tar.gz> <sysroot_destination_directory>".  Then, from Eclipse I setup the Yocto Project AD
>  T for a "Build System Derived Toolchain", I set the Toolchain Root Directory to my Poky build directory, and I set the Sysroot location to my extracted sysroot directory.
> 
> After the initial environment setup, from Eclipse I selected File->New->C Project, and selected a "Hello World ANSI C Autotools Project" under the "Yocto Project ADT Autotools Project" options.  For the new project, if I select "Reconfigure Project" the configuration fails with the following error:
> 
> 	checking whether the C compiler works... no
> 
> From checking config.log, here are the details on the build failure:
> 
> 	configure:3289: checking whether the C compiler works
> 	configure:3311: arm-poky-linux-gnueabi-gcc  -march=armv5te -marm -mthumb-interwork -mtune=arm926ej-s --sysroot=$SDKTARGETSYSROOT  -g -O0  --sysroot=/<home_path>/extracted_sysroot_1.6.2  --sysroot=/<home_path>/extracted_sysroot_1.6.2  --sysroot=/<home_path>/extracted_sysroot_1.6.2 conftest.c  >&5

It appears that your toolchain is configured properly, however the  GNU
linker (ld) cannot find the libraries it needs to link the binary. 

I suspect that the culprit is "--sysroot=$SDKTARGETSYSROOT"

There should be an environment setup file

/<home_path>/poky/poky-build/tmp/environment-setup-XX


If you open it you will see SDKTARGETSYSROOT environment variable. It
most likely points to a different sysroot path. Please change it to
point to the directory where you extracted your sysroot
(/<home_path>/extracted_sysroot_1.6.2), create a new project and see if
that builds OK.


> 	/<home_path>/poky/poky-build/tmp/sysroots/x86_64-linux/usr/libexec/arm926ejste-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.2/ld: cannot find crt1.o: No such file or directory
> 	/<home_path>/poky/poky-build/tmp/sysroots/x86_64-linux/usr/libexec/arm926ejste-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.2/ld: cannot find crti.o: No such file or directory
> 	/<home_path>/poky/poky-build/tmp/sysroots/x86_64-linux/usr/libexec/arm926ejste-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.2/ld: cannot find crtbegin.o: No such file or directory
> 	/<home_path>/poky/poky-build/tmp/sysroots/x86_64-linux/usr/libexec/arm926ejste-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.2/ld: cannot find -lgcc
> 	/<home_path>/poky/poky-build/tmp/sysroots/x86_64-linux/usr/libexec/arm926ejste-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.2/ld: cannot find -lgcc_s
> 	/<home_path>/poky/poky-build/tmp/sysroots/x86_64-linux/usr/libexec/arm926ejste-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.2/ld: cannot find -lc
> 	/<home_path>/poky/poky-build/tmp/sysroots/x86_64-linux/usr/libexec/arm926ejste-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.2/ld: cannot find -lgcc
> 	/<home_path>/poky/poky-build/tmp/sysroots/x86_64-linux/usr/libexec/arm926ejste-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.2/ld: cannot find -lgcc_s
> 	/<home_path>/poky/poky-build/tmp/sysroots/x86_64-linux/usr/libexec/arm926ejste-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.2/ld: cannot find crtend.o: No such file or directory
> 	/<home_path>/poky/poky-build/tmp/sysroots/x86_64-linux/usr/libexec/arm926ejste-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.2/ld: cannot find crtn.o: No such file or directory
> 	collect2: error: ld returned 1 exit status
> 	configure:3315: $? = 1
> 	configure:3353: result: no
> 	configure: failed program was:
> 	| /* confdefs.h */
> 	| #define PACKAGE_NAME "adt_test_app"
> 	| #define PACKAGE_TARNAME "adt_test_app"
> 	| #define PACKAGE_VERSION "0.1.0"
> 	| #define PACKAGE_STRING "adt_test_app 0.1.0"
> 	| #define PACKAGE_BUGREPORT ""
> 	| #define PACKAGE_URL ""
> 	| #define PACKAGE "adt_test_app"
> 	| #define VERSION "0.1.0"
> 	| /* end confdefs.h.  */
> 	| 
> 	| int
> 	| main ()
> 	| {
> 	| 
> 	|   ;
> 	|   return 0;
> 	| }
> 	configure:3358: error: in `/<home_path>/workspace_kepler/adt_test_app':
> 	configure:3360: error: C compiler cannot create executables
> 
> Note that <home_path> included the actual path to my home directory in config.log but I changed it to <home_path> for the purposes of this e-mail (yes, I'm paranoid).
> 
> However, if I instead open a terminal, go to my project directory and do the following:
> 
> 	source <path_to_Poky_build_directory>/environment-setup-arm926ejste-poky-linux-gnueabi
> 	./configure ${CONFIGURE_FLAGS}

> The project configures without a problem.  I can then either build from the command line or I can build from Eclipse.  It seems very odd to me that the configure doesn't work from Eclipse, but once it is configured I can build without issue.  Anyone have any ideas as to what I have wrong in my setup?
> 

This builds, but it most likely uses the rootfs bundled in the
poky-build directory as pointed to by SDKTARGETSYSROOT and not the
rootfs which your extracted.

Thanks,
Todor

> Thanks,
> Bryan

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