[PULL,14/52] Fix linking relocatable objects on Sparc

Commit Message

Michael Tokarev June 5, 2016, 7:42 a.m. UTC

From: James Clarke <[e-mail]>

On Sparc, gcc implicitly passes --relax to the linker, but -r is
incompatible with this. Therefore, if --no-relax is supported, it should
be passed to the linker.

Signed-off-by: James Clarke <[e-mail]>
Signed-off-by: Michael Tokarev <[e-mail]>
---
 configure | 13 +++++++++++++
 rules.mak |  2 +-
 2 files changed, 14 insertions(+), 1 deletion(-)

Patch

diff --git a/configure b/configure
index b5aab72..360b7a5 100755
--- a/configure
+++ b/configure
@@ -4526,6 +4526,18 @@  if compile_prog "" "" ; then
     have_fsxattr=yes
 fi
 
+#################################################
+# Sparc implicitly links with --relax, which is
+# incompatible with -r. It does no harm to give
+# it on other platforms too.
+
+cat > $TMPC << EOF
+int foo(void) { return 0; }
+EOF
+if compile_prog "" "-nostdlib -Wl,-r -Wl,--no-relax"; then
+  LD_REL_FLAGS="-Wl,--no-relax"
+fi
+
 ##########################################
 # End of CC checks
 # After here, no more $cc or $ld runs
@@ -5529,6 +5541,7 @@  else
 fi
 echo "LDFLAGS=$LDFLAGS" >> $config_host_mak
 echo "LDFLAGS_NOPIE=$LDFLAGS_NOPIE" >> $config_host_mak
+echo "LD_REL_FLAGS=$LD_REL_FLAGS" >> $config_host_mak
 echo "LIBS+=$LIBS" >> $config_host_mak
 echo "LIBS_TOOLS+=$libs_tools" >> $config_host_mak
 echo "EXESUF=$EXESUF" >> $config_host_mak
diff --git a/rules.mak b/rules.mak
index 4a8f464..dca5718 100644
--- a/rules.mak
+++ b/rules.mak
@@ -95,7 +95,7 @@  module-common.o: CFLAGS += $(DSO_OBJ_CFLAGS)
 	$(if $(findstring /,$@),$(call quiet-command,cp $@ $(subst /,-,$@), "  CP    $(subst /,-,$@)"))
 
 
-LD_REL := $(CC) -nostdlib -Wl,-r
+LD_REL := $(CC) -nostdlib -Wl,-r $(LD_REL_FLAGS)
 
 %.mo:
 	$(call quiet-command,$(LD_REL) -o $@ $^,"  LD -r $(TARGET_DIR)$@")