Makefile: Fix linking with modern binutils

Since Binutils 1a9ccd70f9a7[1] u-boot will not link targets that set
CONFIG_SYS_TEXT_BASE=0 with the following error:

  LD      u-boot
arm-linux-gnueabi-ld.bfd: u-boot: Not enough room for program headers, try
 linking with -N
arm-linux-gnueabi-ld.bfd: final link failed: Bad value

The issue can be reproduced with the bad binutils and the rock2_defconfig
target.

This issue was also encountered by the powerpc kernel[2], with the fix
being to pass --no-dynamic-linker for linkers newer than 2.26 when this
flag was introduced. The option tells ld that the PIE or shared lib does
not need loaded program headers.

Ubuntu Zesty's Binutils 2.27.51.20161202 hits this error.

[1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=1a9ccd70f9a7
[2] https://git.kernel.org/cgit/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=ff45000fcb56b5b0f1a14a865d3541746d838a0a

Signed-off-by: Joel Stanley <joel@jms.id.au>
[AF: Apply to LDFLAGS_$(SPL_BIN) as well, suggested by Tom Rini]
Signed-off-by: Andreas Färber <afaerber@suse.de>

diff --git a/Makefile b/Makefile
index ca7d60d610839ede7be37cee640bd3c969132674..09b597d45051f9899abbb517a98d67297a19237c 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -805,6 +805,10 @@ ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
 endif
 
 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
+
+# Avoid 'Not enough room for program headers' error on binutils 2.28 onwards.
+LDFLAGS_u-boot += $(call ld-option, --no-dynamic-linker)
+
 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
 endif

diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl
index 760aceea6383dff0cc5b4f6f394c9ddd982840df..eb24292fec3d0d210f34db2d5eb83963bc49bba4 100644 (file)
--- a/scripts/Makefile.spl
+++ b/scripts/Makefile.spl
@@ -291,6 +291,10 @@ $(obj)/u-boot-x86-16bit-spl.bin: $(obj)/u-boot-spl FORCE
        $(call if_changed,objcopy)
 
 LDFLAGS_$(SPL_BIN) += -T u-boot-spl.lds $(LDFLAGS_FINAL)
+
+# Avoid 'Not enough room for program headers' error on binutils 2.28 onwards.
+LDFLAGS_$(SPL_BIN) += $(call ld-option, --no-dynamic-linker)
+
 ifneq ($(CONFIG_SPL_TEXT_BASE),)
 LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE)
 endif