Hi Dave,
On 10/28/2021 5:26 PM, Dave Hansen wrote:
On 10/28/21 1:37 PM, Reinette Chatre wrote:
From: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
Pass a build id of "none" to the linker to suppress a warning about the
build id being ignored:
/usr/bin/ld: warning: .note.gnu.build-id section discarded, --build-id
ignored.
Do we have a good grasp on why this is producing a warning in the first
place? This seems like something that could get merged quickly with one
more sentence in the changelog.
How about a new changelog as below:
The enclave binary (test_encl.elf) is built with only three sections
(tcs, text, and data) as controlled by its custom linker script.
If gcc is built with "--enable-linker-build-id" (this appears to be a
common configuration even if it is by default off) then gcc will pass
"--build-id" to the linker that will prompt it (the linker) to to write
unique bits identifying the linked file to a ".note.gnu.build-id" section.
The section ".note.gnu.build-id" does not exist in the test enclave
resulting in the following warning emitted by the linker:
/usr/bin/ld: warning: .note.gnu.build-id section discarded, --build-id
ignored
The test enclave does not use the build id within the binary so fix the
warning by passing a build id of "none" to the linker that will disable
the setting from any earlier "--build-id" options and thus disable the
attempt to write the build id to a ".note.gnu.build-id" section that
does not exist.
Reinette
