Building qemu fails in distributions where gcc enables PIE by default
(e.g. Debian unstable) with:
/usr/bin/ld: -r and -pie may not be used together
You have to use -r instead of -Wl,-r to avoid gcc passing -pie to the linker
when PIE is enabled and a relocatable object is passed. However, clang
does not know about -r, so try -Wl,-r first.
Reported-by: Adrian Bunk <b...@stusta.de>
Cc: qemu-sta...@nongnu.org
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
configure | 10 ++++++++--
rules.mak | 2 +-
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/configure b/configure
index 5e66828..c2508fe 100755
--- a/configure
+++ b/configure
@@ -4723,8 +4723,14 @@ EOF
if ! compile_object ""; then
error_exit "Failed to compile object file for LD_REL_FLAGS test"
fi
-if do_cc -nostdlib -Wl,-r -Wl,--no-relax -o $TMPMO $TMPO; then
- LD_REL_FLAGS="-Wl,--no-relax"
+for i in '-Wl,-r -Wl,--no-relax' -Wl,-r -r; do
+ if do_cc -nostdlib $i -o $TMPMO $TMPO; then
+ LD_REL_FLAGS=$i
+ break
+ fi
+done
+if test "$modules" = "yes" && test "$LD_REL_FLAGS" = ""; then
+ feature_not_found "modules" "Cannot find how to build relocatable objects"
fi
##########################################
diff --git a/rules.mak b/rules.mak
index 0333ae3..f4839d2 100644
--- a/rules.mak
+++ b/rules.mak
@@ -93,7 +93,7 @@ module-common.o: CFLAGS += $(DSO_OBJ_CFLAGS)
$(if $(findstring /,$@),$(call quiet-command,cp $@ $(subst
/,-,$@),"CP","$(subst /,-,$@)"))
-LD_REL := $(CC) -nostdlib -Wl,-r $(LD_REL_FLAGS)
+LD_REL := $(CC) -nostdlib $(LD_REL_FLAGS)
%.mo:
$(call quiet-command,$(LD_REL) -o $@ $^,"LD","$(TARGET_DIR)$@")
--
2.9.3
