[Buildroot] [PATCH v2,1/1] gnuchess: needs -fPIC
Fabrice Fontaine
fontaine.fabrice at gmail.com
Sat Jan 12 17:55:05 UTC 2019
When building with -O2 (or -O3) on ARM cortex-M cpus, link fails on:
/home/rclinux/rc-buildroot-test/scripts/instance-0/output/host/bin/arm-linux-g++ -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -Wl,-elf2flt -static -Wl,-elf2flt -static -Wl,-elf2flt -static -o gnuchess main.o components.o frontend/libfrontend.a adapter/libadapter.a engine/libengine.a -lreadline -lncurses
ERROR: reloc type R_ARM_THM_MOVW_ABS_NC unsupported in this context
ERROR: reloc type R_ARM_THM_MOVT_ABS unsupported in this context
ERROR: reloc type R_ARM_THM_MOVW_ABS_NC unsupported in this context
ERROR: reloc type R_ARM_THM_MOVT_ABS unsupported in this context
ERROR: reloc type R_ARM_THM_MOVW_ABS_NC unsupported in this context
ERROR: reloc type R_ARM_THM_MOVT_ABS unsupported in this context
ERROR: reloc type R_ARM_THM_MOVW_ABS_NC unsupported in this context
To fix this, pas -fPIC unconditionnally
Fixes:
- http://autobuild.buildroot.org/results/7918757b255ed41609609d2083c2d8904ff3136e
Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
---
Changes v1 -> v2 (after review of Thomas Petazzoni):
- Use -fPIC instead of replacing -O2/O3 by -Os
package/gnuchess/gnuchess.mk | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/package/gnuchess/gnuchess.mk b/package/gnuchess/gnuchess.mk
index 4d91706de4..1bbbeb4b1b 100644
--- a/package/gnuchess/gnuchess.mk
+++ b/package/gnuchess/gnuchess.mk
@@ -13,4 +13,8 @@ GNUCHESS_DEPENDENCIES = host-flex flex
GNUCHESS_DEPENDENCIES += $(if $(BR2_PACKAGE_READLINE),readline) \
$(TARGET_NLS_DEPENDENCIES)
+GNUCHESS_CONF_ENV = \
+ CFLAGS="$(TARGET_CFLAGS) -fPIC" \
+ CXXFLAGS="$(TARGET_CXXFLAGS) -fPIC"
+
$(eval $(autotools-package))
--
2.14.1
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