On 01/15/2015 11:38 PM, Sam Varshavchik wrote:
Stephen Morris writes:
I have a driver for a wifi usb device that I need to compile because
there are no drivers in the kernel, which has been obtained from the
vendor of the device. When I attempt to compile the code the compile
fails on the grounds that some warnings are being translated into
errors. From my perspective these errors should not be happening
because, when a debugging module wants to time stamp the build, that
is not an error and is perfectly acceptable. How do I get the
compiler to stop producing these errors. The messages I get are
listed below.
The makefile that's used to build this module explicitly specifies a
compiler flag that makes this diagnostic an error. You can see it
referenced in the error message, -Werror=date-time
So the answer to your question is very simple: it happens because
that's what it does. I'm sure there's a way to override this flag.
Look at the makefile, figure out where it specifies this flag, and
take it out, if that's what you want to do. It might be possible to
pass some flags on the command line to override it; can't really say
without looking at the makefile.
If this driver is supposedly obtained from the vendor, and I'd think
it's highly unlikely that Fedora manually patches the upstream kernel
to add this flag, so the conclusion to draw from this is that the
vendor has never tested their module with a kernel that's more recent
than whatever is the first version of the kernel whose makefile was
set up that way. I'd say that this compiler error is the least of your
problems.
Thanks Sam, I've found the Makefile that does the compiling and it
doesn't supply the parameter, -Werror specification is listed in there
but is commented out, so if it is not specified in the kernel source
then it is coming from one of the includes being used. I may have to
compile the kernel manually myself as well anyway, as the makefile seems
to be specifying dependencies on kernel config specifications that don't
appear to be active in the pre-compiled kernels I am using.
Authentication requested [root] for make driver:
make ARCH=x86_64 CROSS_COMPILE= -C
/lib/modules/3.17.8-300.fc21.x86_64/build
M=/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411
modules
make[1]: Entering directory '/usr/src/kernels/3.17.8-300.fc21.x86_64'
CC [M]
/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411/core/rtw_cmd.o
CC [M]
/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411/core/rtw_security.o
CC [M]
/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411/core/rtw_debug.o
/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411/core/rtw_debug.c:
In function ‘dump_drv_version’:
/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411/core/rtw_debug.c:66:64:
error: macro "__DATE__" might prevent reproducible builds
[-Werror=date-time]
DBG_871X_SEL_NL(sel, "build time: %s %s\n", __DATE__, __TIME__);
^
/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411/core/rtw_debug.c:66:1:
error: macro "__TIME__" might prevent reproducible builds
[-Werror=date-time]
DBG_871X_SEL_NL(sel, "build time: %s %s\n", __DATE__, __TIME__);
^
/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411/core/rtw_debug.c:66:1:
error: macro "__DATE__" might prevent reproducible builds
[-Werror=date-time]
/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411/core/rtw_debug.c:66:1:
error: macro "__TIME__" might prevent reproducible builds
[-Werror=date-time]
/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411/core/rtw_debug.c:66:1:
error: macro "__DATE__" might prevent reproducible builds
[-Werror=date-time]
/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411/core/rtw_debug.c:66:1:
error: macro "__TIME__" might prevent reproducible builds
[-Werror=date-time]
cc1: some warnings being treated as errors
scripts/Makefile.build:257: recipe for target
'/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411/core/rtw_debug.o'
failed
make[2]: ***
[/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411/core/rtw_debug.o]
Error 1
Makefile:1377: recipe for target
'_module_/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411'
failed
make[1]: ***
[_module_/usr/local/downloads/dlink/RTL8812AU_linux_v4.3.2_11100.20140411/driver/rtl8812AU_linux_v4.3.2_11100.20140411]
Error 2
make[1]: Leaving directory '/usr/src/kernels/3.17.8-300.fc21.x86_64'
Makefile:1350: recipe for target 'modules' failed
make: *** [modules] Error 2
##################################################
Compile make driver error: 2
Please check error Mesg
##################################################
begin:vcard
fn:Stephen Morris
n:Morris;Stephen
email;internet:samorris@xxxxxxxxxxxxxxx
x-mozilla-html:TRUE
version:2.1
end:vcard
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