Greeting's
Today's mainline kernel fails to compile on my powerpc box with below errors
././include/linux/compiler_attributes.h:62:5: warning: "__has_attribute"
is not defined, evaluates to 0 [-Wundef]
#if __has_attribute(__assume_aligned__)
^~~~~~~~~~~~~~~
././include/linux/compiler_attributes.h:62:20: error: missing binary
operator before token "("
#if __has_attribute(__assume_aligned__)
^
././include/linux/compiler_attributes.h:88:5: warning: "__has_attribute"
is not defined, evaluates to 0 [-Wundef]
#if __has_attribute(__copy__)
^~~~~~~~~~~~~~~
././include/linux/compiler_attributes.h:88:20: error: missing binary
operator before token "("
#if __has_attribute(__copy__)
Kernel builds fine when below patch is reverted
commit 6d2ef22 : compiler_attributes.h: drop __has_attribute() support
for gcc4
--
Regard's
Abdul Haleem
IBM Linux Technology Center
Hi Abdul,
On Tue, 14 Sep 2021 11:39:44 +0530 Abdul Haleem [off-list ref] wrote:
Today's mainline kernel fails to compile on my powerpc box with below errors
././include/linux/compiler_attributes.h:62:5: warning: "__has_attribute" is not defined, evaluates to 0 [-Wundef]
#if __has_attribute(__assume_aligned__)
^~~~~~~~~~~~~~~
././include/linux/compiler_attributes.h:62:20: error: missing binary operator before token "("
#if __has_attribute(__assume_aligned__)
^
././include/linux/compiler_attributes.h:88:5: warning: "__has_attribute" is not defined, evaluates to 0 [-Wundef]
#if __has_attribute(__copy__)
^~~~~~~~~~~~~~~
././include/linux/compiler_attributes.h:88:20: error: missing binary operator before token "("
#if __has_attribute(__copy__)
Kernel builds fine when below patch is reverted
commit 6d2ef22 : compiler_attributes.h: drop __has_attribute() support for gcc4
Thanks for your report.
This is known and being addressed.
--
Cheers,
Stephen Rothwell
On Mon, Sep 13, 2021 at 11:22 PM Stephen Rothwell [off-list ref] wrote:
Hi Abdul,
On Tue, 14 Sep 2021 11:39:44 +0530 Abdul Haleem [off-list ref] wrote:
quoted
Today's mainline kernel fails to compile on my powerpc box with below errors
././include/linux/compiler_attributes.h:62:5: warning: "__has_attribute" is not defined, evaluates to 0 [-Wundef]
#if __has_attribute(__assume_aligned__)
^~~~~~~~~~~~~~~
././include/linux/compiler_attributes.h:62:20: error: missing binary operator before token "("
#if __has_attribute(__assume_aligned__)
^
././include/linux/compiler_attributes.h:88:5: warning: "__has_attribute" is not defined, evaluates to 0 [-Wundef]
#if __has_attribute(__copy__)
^~~~~~~~~~~~~~~
././include/linux/compiler_attributes.h:88:20: error: missing binary operator before token "("
#if __has_attribute(__copy__)
Kernel builds fine when below patch is reverted
commit 6d2ef22 : compiler_attributes.h: drop __has_attribute() support for gcc4
Thanks for your report.
This is known and being addressed.
Thanks for the report. Support for GCC 4.X has been dropped.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=76ae847497bc5207c479de5e2ac487270008b19b
--
Thanks,
~Nick Desaulniers