Change in coreboot[master]: Makefile.inc: Avoid --emit-relocs on RISC-V

[Julius Werner (Code Review)]

Julius Werner has submitted this change. ( https://review.coreboot.org/c/coreboot/+/49449 )

Change subject: Makefile.inc: Avoid --emit-relocs on RISC-V
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Makefile.inc: Avoid --emit-relocs on RISC-V

There seems to be a bug[1] in the GNU linker for the RISC-V architecture
triggered by symbols that are more than 2GB offset from the program
counter. My next patch is introducing symbols like that and stuck on
this problem. The code path that runs into the issue is only taken when
passing the --emit-relocs flag, which is really only needed for building
rmodules. Since RISC-V platforms don't use any rmodules at the moment,
let's disable the flag on RISC-V until the issue can be fixed in the
toolchain.

[1]: https://sourceware.org/bugzilla/show_bug.cgi?id=27180

Signed-off-by: Julius Werner 
Change-Id: I784a506034325c0ba937589416acaafbf80080e2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49449
Reviewed-by: Angel Pons 
Tested-by: build bot (Jenkins) 
---
M Makefile.inc
1 file changed, 7 insertions(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Angel Pons: Looks good to me, approved

diff --git a/Makefile.inc b/Makefile.inc
index f0cbb34..54adaa2 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -484,7 +484,13 @@
 # Disable style checks for now
 ADAFLAGS_common += -gnatyN

-LDFLAGS_common := --gc-sections -nostdlib -nostartfiles -static --emit-relocs
+LDFLAGS_common := --gc-sections -nostdlib -nostartfiles -static
+
+# Workaround for RISC-V linker bug, merge back into above line when fixed.
+# https://sourceware.org/bugzilla/show_bug.cgi?id=27180
+ifneq ($(CONFIG_ARCH_RISCV),y)
+LDFLAGS_common += --emit-relocs
+endif

ifeq ($(CONFIG_WARNINGS_ARE_ERRORS),y)
 CFLAGS_common += -Werror