Since gcc-8 the --enabled-default-pie starts producing code which assembler
can't translate in case of U-Boot. The build fails with
{standard input}: Assembler messages:
{standard input}:21100: Error: junk at end of line, first unrecognized
character is `@'
{standard input}:21120: Error: junk at end of line, first unrecognized
character is `@'
and so on.
This is usually the case for x86 platform because in many cases it uses host
compiler from the Linux distributions, where PIE is enabled by default.
Previously (gcc-7 and earlier) that was a potential issue due to absence of
constructions like
.long [email protected]@gotoff
which are a cause of above error messages in gcc-8.
Fix all these by disabling PIE on Makefile level.
Reported-by: Heinrich Schuchardt <[email protected]>
Suggested-by: Mika Westerberg <[email protected]>
Signed-off-by: Andy Shevchenko <[email protected]>
---
Makefile | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Makefile b/Makefile
index 884b7d943c..e2310f3552 100644
--- a/Makefile
+++ b/Makefile
@@ -375,6 +375,10 @@ KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
KBUILD_CFLAGS += -fshort-wchar
KBUILD_AFLAGS := -D__ASSEMBLY__
+# Don't generate position independent code
+KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
+KBUILD_AFLAGS += $(call cc-option,-fno-PIE)
+
# Read UBOOTRELEASE from include/config/uboot.release (if it exists)
UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if
$(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
--
2.18.0
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