Experimental Physics and
Industrial Control System

Hey Lukas,

I guess your definition of GNU_DIR is incorrect.
The EPICS builod system searches for the cross-compiler includes in
$GNU_DIR/include but the path you have given would be
$GNU_DIR/../../include

Comparing your setup with mine (I'm using crosstool-ng) the
correct setting should be
GNU_DIR = /opt/oecore-x86_64/sysroots/x86_64-angstromsdk-linux

Hope this helps.

  Florian

On 03/06/2015 01:40 PM, Lukas Böhm wrote:

Hi,

I am having some trouble while cross compiling EPICS Base for linux-arm on my linux-x86_64 machine and my cross toolchain from Openembedded.

Build crashes at :
*************
...

make[3]: Verzeichnis »/home/lb/src/EPICS_test/base-3.14.12.4/src/libCom/O.linux-x86_64« wird verlassen

    make -C O.linux-arm -f ../Makefile TOP=../../.. T_A=linux-arm install

make[3]: Verzeichnis »/home/lb/src/EPICS_test/base-3.14.12.4/src/libCom/O.linux-arm« wird betreten

/opt/oecore-x86_64/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/bin/arm-angstrom-linux-gnueabi-gcc -c -D_POSIX_C_SOURCE=199506L -D_POSIX_THREADS -D_XOPEN_SOURCE=500 -DUNIX -D_BSD_SOURCE -Dlinux -D_REENTRANT -O3 -g -Wall -fPIC -MMD -I. -I../O.Common -I. -I../../../src/libCom/osi/os/Linux -I../../../src/libCom/osi/os/posix -I../../../src/libCom/osi/os/default -I.. -I../../../src/libCom/bucketLib -I../../../src/libCom/ring -I../../../src/libCom/calc -I../../../src/libCom/cvtFast -I../../../src/libCom/cppStd -I../../../src/libCom/cxxTemplates -I../../../src/libCom/dbmf -I../../../src/libCom/ellLib -I../../../src/libCom/env -I../../../src/libCom/error -I../../../src/libCom/fdmgr -I../../../src/libCom/freeList -I../../../src/libCom/gpHash -I../../../src/libCom/iocsh -I../../../src/libCom/logClient -I../../../src/libCom/macLib -I../../../src/libCom/misc -I../../../src/libCom/osi -I../../../src/libCom/taskwd -I../../../src/libCom/ti

mer -I.

./../../src/libCom/tsDefs -I../../../include/os/Linux -I../../../include -I/opt/oecore-x86_64/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi/include ../../../src/libCom/bucketLib/bucketLib.c

../../../src/libCom/bucketLib/bucketLib.c:19:19: fatal error: stdio.h: No such file or directory

 #include <stdio.h>
                   ^
...
***********

My configurations:
Under configure dir I set in CONFIG_SITE file:
    CROSS_COMPILER_TARGET_ARCHS=linux-arm
    CROSS_COMPILER_HOST_ARCHS=linux-x86_64

Under configure/os I copied CONFIG_SITE.linux-x86.linux-arm to CONFIG_SITE.linux-x86_64.linux-arm

and set there:
    GNU_TARGET = arm-angstrom-linux-gnueabi

GNU_DIR = /opt/oecore-x86_64/sysroots/x86_64-angstromsdk-linux/usr/bin/arm-angstrom-linux-gnueabi

as this is the folder containing toolchain binaries as arm-angstrom-linux-gnueabi-gcc and so on. Additionally I had to make a soft-link "bin" inside this directory pointing to this directory for EPICS to find the binaries.

The missing stdio.h is under /opt/oecore-x86_64/sysroots/armv7at2hf-vfp-neon-angstrom-linux-gnueabi/usr/include .

Hopefully someone could help.
Thanks

--
----------------------------------------
| Dr. Florian Feldbauer                |
|                                      |
| Helmholtz-Institut Mainz /           |
| Johannes Gutenberg-Universität Mainz |
| Johann-Joachim-Becher-Weg 36         |
| D-55128 Mainz                        |
|                                      |
| Office: SB1 / 00-321                 |
| Phone:  (+49)6131 / 39-29605         |
----------------------------------------

References:

cross compiling EPICS Base fails Lukas Böhm

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