package/openocd: disable on blackfin
PATCH 1/1 package/openocd: disable on blackfin
The "_" symbol prefix added by the blackfin toolchain causes "undefined symbol" failures during the configuration.
Fixes:
http://autobuild.buildroot.org/results/e90/e90b4d5ad79d99487f21c9d18581e8eba7034501/
--- package/openocd/Config.in | 4 ++++ 1 file changed, 4 insertions(+)
package/openocd/Config.in +4 -0
@@ -1,5 +1,9 @@ config BR2_PACKAGE_OPENOCD bool "openocd" + # disable openocd on blackfin because it triggers "undefined symbol" error + # becasue of the "_" prefix: + # http://autobuild.buildroot.org/results/e90/e90b4d5ad79d99487f21c9d18581e8eba7034501/ + depends on !BR2_bfin help OpenOCD - Open On-Chip Debugger
Signature · 1 line
2.2.1
PATCH 1/1 package/openocd: disable on blackfin
Dear Samuel Martin,
Quoted 16 lines · Samuel Martin
The "_" symbol prefix added by the blackfin toolchain causes "undefined symbol" failures during the configuration.
Fixes:
http://autobuild.buildroot.org/results/e90/e90b4d5ad79d99487f21c9d18581e8eba7034501/Signed-off-by Samuel Martin <[email protected]>--- package/openocd/Config.in | 4 ++++ 1 file changed, 4 insertions(+)package/openocd/Config.in +0
-0
package/openocd/Config.in line 9
Quoted 9 lines
package/openocd/Config.in +4
-0@@ -1,5 +1,9 @@ config BR2_PACKAGE_OPENOCD bool "openocd" + # disable openocd on blackfin because it triggers "undefined symbol" error + # becasue of the "_" prefix: + # http://autobuild.buildroot.org/results/e90/e90b4d5ad79d99487f21c9d18581e8eba7034501/ + depends on !BR2_bfin help OpenOCD - Open On-Chip Debugger
This seems weird because the "_" prefix normally only causes issues when linking C code against assembly code. If you're only linking C code against C code, it *should* be fully transparent.
Thomas
Signature · 3 lines
Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
PATCH 1/1 package/openocd: disable on blackfin
Samuel, Thomas, All,
On 2015-01-06 09:26 +0100, Thomas Petazzoni spake thusly:
Quoted 22 lines · Samuel Martin
Quoted 21 lines
The "_" symbol prefix added by the blackfin toolchain causes "undefined symbol" failures during the configuration.
Fixes:
http://autobuild.buildroot.org/results/e90/e90b4d5ad79d99487f21c9d18581e8eba7034501/Signed-off-by Samuel Martin <[email protected]>--- package/openocd/Config.in | 4 ++++ 1 file changed, 4 insertions(+)package/openocd/Config.in +3
-0@@ -1,5 +1,9 @@ config BR2_PACKAGE_OPENOCD bool "openocd" + # disable openocd on blackfin because it triggers "undefined symbol" error + # becasue of the "_" prefix: + # http://autobuild.buildroot.org/results/e90/e90b4d5ad79d99487f21c9d18581e8eba7034501/
Quoted 8 lines
package/openocd/Config.in line 9
Quoted 4 lines
package/openocd/Config.in +1
-0+ depends on !BR2_bfin help OpenOCD - Open On-Chip DebuggerThis seems weird because the "_" prefix normally only causes issues when linking C code against assembly code. If you're only linking C code against C code, it *should* be fully transparent.
The real culprit seems to be libusb-compat. See config.log:
configure:14893: [...]/bfin-uclinux-gcc -o conftest [...] -static [...] -lftdi -lusb /home/ymorin/dev/buildroot/O/host/usr/bfin-buildroot-uclinux-uclibc/sysroot/usr/lib/libusb.a(libusb_la-core.o):
In function `_usb_detach_kernel_driver_np':
core.c:(.text+0x96): undefined reference to `_libusb_detach_kernel_driver'
So, it means libusb.a as an undefined reference to _libusb_detach_kernel_driver which is in fact defined in libus-1.0.a.
If I add -lusb-1.0 -pthread to the link command, it all works great! :-)
So, it looks like 'just' a missing dependency in a static case.
So, marking this patch as Rejected in Patchwork: the real fix is to link with the appropriate libraries.
Hint: the .pc files seem to be correct. But line 1060 in configure.ac is where the error originates from. It is the last clause in an AC_RUN_IFELSE block starting on line 1042... And the rest is left as an exercise. ;-)
Regards,
Yann E. MORIN.
Signature · 6 lines
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