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authorCary Coutant <ccoutant@google.com>2010-06-10 17:20:27 +0000
committerCary Coutant <ccoutant@google.com>2010-06-10 17:20:27 +0000
commitf3a2388fc96c63c0233cdc3449ea61cf36e4975b (patch)
treed073b85cc10872fe8a3f3a93207f829932255370
parent7530c4809276954eebc6cfa9a41452d15da31bdb (diff)
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* object.cc (Sized_relobj::do_layout): Defer layout for reloc sections.
(Sized_relobj::do_layout_deferred_sections): Do layout for deferred reloc sections. * object.h (Sized_relobj::deferred_layout_relocs_): New data member. PR 11683 * symtab.h (Symbol::is_placeholder): New member function. * target-reloc.h (relocate_section): Check for placeholder symbols. * testsuite/Makefile.am (plugin_test_8): New test. (plugin_test_9): New test. * testsuite/Makefile.in: Regenerate.
-rw-r--r--gold/ChangeLog15
-rw-r--r--gold/object.cc41
-rw-r--r--gold/object.h2
-rw-r--r--gold/symtab.h7
-rw-r--r--gold/target-reloc.h2
-rw-r--r--gold/testsuite/Makefile.am28
-rw-r--r--gold/testsuite/Makefile.in53
7 files changed, 143 insertions, 5 deletions
diff --git a/gold/ChangeLog b/gold/ChangeLog
index b19b90a..d333449 100644
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,18 @@
+2010-06-10 Cary Coutant <ccoutant@google.com>
+
+ * object.cc (Sized_relobj::do_layout): Defer layout for reloc sections.
+ (Sized_relobj::do_layout_deferred_sections): Do layout for deferred
+ reloc sections.
+ * object.h (Sized_relobj::deferred_layout_relocs_): New data member.
+
+ PR 11683
+ * symtab.h (Symbol::is_placeholder): New member function.
+ * target-reloc.h (relocate_section): Check for placeholder symbols.
+
+ * testsuite/Makefile.am (plugin_test_8): New test.
+ (plugin_test_9): New test.
+ * testsuite/Makefile.in: Regenerate.
+
2010-06-09 Nick Clifton <nickc@redhat.com>
* yyscript.y (input_list_element): Allow strings prefixed with
diff --git a/gold/object.cc b/gold/object.cc
index 24fd586..b034ee2 100644
--- a/gold/object.cc
+++ b/gold/object.cc
@@ -1371,6 +1371,17 @@ Sized_relobj<size, big_endian>::do_layout(Symbol_table* symtab,
}
Output_section* data_section = out_sections[data_shndx];
+ if (data_section == reinterpret_cast<Output_section*>(2))
+ {
+ // The layout for the data section was deferred, so we need
+ // to defer the relocation section, too.
+ const char* name = pnames + shdr.get_sh_name();
+ this->deferred_layout_relocs_.push_back(
+ Deferred_layout(i, name, pshdr, 0, elfcpp::SHT_NULL));
+ out_sections[i] = reinterpret_cast<Output_section*>(2);
+ out_section_offsets[i] = invalid_address;
+ continue;
+ }
if (data_section == NULL)
{
out_sections[i] = NULL;
@@ -1471,6 +1482,36 @@ Sized_relobj<size, big_endian>::do_layout_deferred_sections(Layout* layout)
}
this->deferred_layout_.clear();
+
+ // Now handle the deferred relocation sections.
+
+ Output_sections& out_sections(this->output_sections());
+ std::vector<Address>& out_section_offsets(this->section_offsets_);
+
+ for (deferred = this->deferred_layout_relocs_.begin();
+ deferred != this->deferred_layout_relocs_.end();
+ ++deferred)
+ {
+ unsigned int shndx = deferred->shndx_;
+ typename This::Shdr shdr(deferred->shdr_data_);
+ unsigned int data_shndx = this->adjust_shndx(shdr.get_sh_info());
+
+ Output_section* data_section = out_sections[data_shndx];
+ if (data_section == NULL)
+ {
+ out_sections[shndx] = NULL;
+ out_section_offsets[shndx] = invalid_address;
+ continue;
+ }
+
+ Relocatable_relocs* rr = new Relocatable_relocs();
+ this->set_relocatable_relocs(shndx, rr);
+
+ Output_section* os = layout->layout_reloc(this, shndx, shdr,
+ data_section, rr);
+ out_sections[shndx] = os;
+ out_section_offsets[shndx] = invalid_address;
+ }
}
// Add the symbols to the symbol table.
diff --git a/gold/object.h b/gold/object.h
index 02747a7..bc2b558 100644
--- a/gold/object.h
+++ b/gold/object.h
@@ -2022,6 +2022,8 @@ class Sized_relobj : public Relobj
unsigned int discarded_eh_frame_shndx_;
// The list of sections whose layout was deferred.
std::vector<Deferred_layout> deferred_layout_;
+ // The list of relocation sections whose layout was deferred.
+ std::vector<Deferred_layout> deferred_layout_relocs_;
};
// A class to manage the list of all objects.
diff --git a/gold/symtab.h b/gold/symtab.h
index 4a97461..7d75e06 100644
--- a/gold/symtab.h
+++ b/gold/symtab.h
@@ -459,6 +459,13 @@ class Symbol
return this->source_ == FROM_OBJECT && this->object()->is_dynamic();
}
+ // Return whether this is a placeholder symbol from a plugin object.
+ bool
+ is_placeholder() const
+ {
+ return this->source_ == FROM_OBJECT && this->object()->pluginobj() != NULL;
+ }
+
// Return whether this is an undefined symbol.
bool
is_undefined() const
diff --git a/gold/target-reloc.h b/gold/target-reloc.h
index 34c13e8..23866e3 100644
--- a/gold/target-reloc.h
+++ b/gold/target-reloc.h
@@ -341,7 +341,7 @@ relocate_section(
}
if (sym != NULL
- && sym->is_undefined()
+ && (sym->is_undefined() || sym->is_placeholder())
&& sym->binding() != elfcpp::STB_WEAK
&& !is_defined_in_discarded_section
&& !target->is_defined_by_abi(sym)
diff --git a/gold/testsuite/Makefile.am b/gold/testsuite/Makefile.am
index 67d0333..7a427cd 100644
--- a/gold/testsuite/Makefile.am
+++ b/gold/testsuite/Makefile.am
@@ -1314,6 +1314,34 @@ plugin_test_7_2.o: plugin_test_7_2.c
$(COMPILE) -O0 -c -ffunction-sections -fdata-sections -o $@ $<
plugin_test_7.err: plugin_test_7
+# Test plugins with -r.
+check_PROGRAMS += plugin_test_8
+plugin_test_8.o: two_file_test_main.o two_file_test_1.syms two_file_test_1b.syms two_file_test_2.o ../ld-new plugin_test.so
+ ../ld-new -r -o $@ --no-demangle --plugin "./plugin_test.so" two_file_test_main.o two_file_test_1.syms two_file_test_1b.syms two_file_test_2.o
+plugin_test_8: plugin_test_8.o gcctestdir/ld
+ $(CXXLINK) -Bgcctestdir/ -Wl,--no-demangle plugin_test_8.o
+
+# Test that symbols known in the IR file but not in the replacement file
+# produce an unresolved symbol error.
+check_DATA += plugin_test_9.err
+MOSTLYCLEANFILES += plugin_test_9.err
+plugin_test_9.err: two_file_test_main.o two_file_test_1c.syms two_file_test_2.syms gcctestdir/ld plugin_test.so
+ @echo $(CXXLINK) -Bgcctestdir/ -o plugin_test_9 -Wl,--no-demangle,--plugin,"./plugin_test.so" two_file_test_main.o two_file_test_1c.syms two_file_test_2.syms "2>$@"
+ @if $(CXXLINK) -Bgcctestdir/ -o plugin_test_9 -Wl,--no-demangle,--plugin,"./plugin_test.so" two_file_test_main.o two_file_test_1c.syms two_file_test_2.syms 2>$@; then \
+ echo 1>&2 "Link of plugin_test_9 should have failed"; \
+ rm -f $@; \
+ exit 1; \
+ fi
+# Make a .syms file that claims to define the symbol _Z4t16av.
+two_file_test_1c.syms: two_file_test_1.syms two_file_test_1c.o
+ cp two_file_test_1.syms $@.tmp
+ grep "_Z4t16av" two_file_test_1b.syms >> $@.tmp
+ mv -f $@.tmp $@
+# Make a copy of two_file_test_1.o, which does not define the symbol _Z4t16av.
+MOSTLYCLEANFILES += two_file_test_1c.o
+two_file_test_1c.o: two_file_test_1.o
+ cp two_file_test_1.o $@
+
plugin_test.so: plugin_test.o
$(LINK) -Bgcctestdir/ -shared plugin_test.o
plugin_test.o: plugin_test.c
diff --git a/gold/testsuite/Makefile.in b/gold/testsuite/Makefile.in
index efc3bcd..ce03d13 100644
--- a/gold/testsuite/Makefile.in
+++ b/gold/testsuite/Makefile.in
@@ -250,6 +250,8 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@NATIVE_LINKER_FALSE@binary_test_DEPENDENCIES =
@GCC_FALSE@thin_archive_test_2_DEPENDENCIES =
@NATIVE_LINKER_FALSE@thin_archive_test_2_DEPENDENCIES =
+
+# Test plugins with -r.
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@am__append_22 = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_1 \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_2 \
@@ -257,7 +259,8 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_4 \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_5 \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_6 \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7 \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_8
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@am__append_23 = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_1.sh \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_2.sh \
@@ -265,6 +268,9 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_4.sh \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_6.sh \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7.sh
+
+# Test that symbols known in the IR file but not in the replacement file
+# produce an unresolved symbol error.
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@am__append_24 = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_1.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_2.err \
@@ -272,7 +278,9 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_4.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_6.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7.err \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7.syms
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7.syms \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_9.err
+# Make a copy of two_file_test_1.o, which does not define the symbol _Z4t16av.
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@am__append_25 = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_1.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_2.err \
@@ -281,6 +289,8 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_4.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_6.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7.err \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_9.err \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ two_file_test_1c.o \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ unused.c
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_26 = exclude_libs_test \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ local_labels_test \
@@ -499,7 +509,8 @@ libgoldtest_a_OBJECTS = $(am_libgoldtest_a_OBJECTS)
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_4$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_5$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_6$(EXEEXT) \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7$(EXEEXT)
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_7$(EXEEXT) \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_8$(EXEEXT)
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_17 = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ exclude_libs_test$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ local_labels_test$(EXEEXT) \
@@ -757,6 +768,12 @@ plugin_test_7_LDADD = $(LDADD)
plugin_test_7_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
+plugin_test_8_SOURCES = plugin_test_8.c
+plugin_test_8_OBJECTS = plugin_test_8.$(OBJEXT)
+plugin_test_8_LDADD = $(LDADD)
+plugin_test_8_DEPENDENCIES = libgoldtest.a ../libgold.a \
+ ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
+ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
@GCC_TRUE@@NATIVE_LINKER_TRUE@am_protected_1_OBJECTS = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ protected_main_1.$(OBJEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ protected_main_2.$(OBJEXT) \
@@ -1120,7 +1137,7 @@ SOURCES = $(libgoldtest_a_SOURCES) basic_pic_test.c basic_pie_test.c \
$(object_unittest_SOURCES) permission_test.c plugin_test_1.c \
plugin_test_2.c plugin_test_3.c plugin_test_4.c \
plugin_test_5.c plugin_test_6.c plugin_test_7.c \
- $(protected_1_SOURCES) $(protected_2_SOURCES) \
+ plugin_test_8.c $(protected_1_SOURCES) $(protected_2_SOURCES) \
$(relro_script_test_SOURCES) $(relro_test_SOURCES) \
$(script_test_1_SOURCES) $(script_test_2_SOURCES) \
script_test_3.c $(searched_file_test_SOURCES) \
@@ -1958,6 +1975,15 @@ object_unittest$(EXEEXT): $(object_unittest_OBJECTS) $(object_unittest_DEPENDENC
@PLUGINS_FALSE@plugin_test_7$(EXEEXT): $(plugin_test_7_OBJECTS) $(plugin_test_7_DEPENDENCIES)
@PLUGINS_FALSE@ @rm -f plugin_test_7$(EXEEXT)
@PLUGINS_FALSE@ $(LINK) $(plugin_test_7_OBJECTS) $(plugin_test_7_LDADD) $(LIBS)
+@GCC_FALSE@plugin_test_8$(EXEEXT): $(plugin_test_8_OBJECTS) $(plugin_test_8_DEPENDENCIES)
+@GCC_FALSE@ @rm -f plugin_test_8$(EXEEXT)
+@GCC_FALSE@ $(LINK) $(plugin_test_8_OBJECTS) $(plugin_test_8_LDADD) $(LIBS)
+@NATIVE_LINKER_FALSE@plugin_test_8$(EXEEXT): $(plugin_test_8_OBJECTS) $(plugin_test_8_DEPENDENCIES)
+@NATIVE_LINKER_FALSE@ @rm -f plugin_test_8$(EXEEXT)
+@NATIVE_LINKER_FALSE@ $(LINK) $(plugin_test_8_OBJECTS) $(plugin_test_8_LDADD) $(LIBS)
+@PLUGINS_FALSE@plugin_test_8$(EXEEXT): $(plugin_test_8_OBJECTS) $(plugin_test_8_DEPENDENCIES)
+@PLUGINS_FALSE@ @rm -f plugin_test_8$(EXEEXT)
+@PLUGINS_FALSE@ $(LINK) $(plugin_test_8_OBJECTS) $(plugin_test_8_LDADD) $(LIBS)
protected_1$(EXEEXT): $(protected_1_OBJECTS) $(protected_1_DEPENDENCIES)
@rm -f protected_1$(EXEEXT)
$(protected_1_LINK) $(protected_1_OBJECTS) $(protected_1_LDADD) $(LIBS)
@@ -2191,6 +2217,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/plugin_test_5.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/plugin_test_6.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/plugin_test_7.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/plugin_test_8.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/protected_3.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/protected_main_1.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/protected_main_2.Po@am__quote@
@@ -3076,6 +3103,24 @@ uninstall-am:
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@plugin_test_7_2.o: plugin_test_7_2.c
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ $(COMPILE) -O0 -c -ffunction-sections -fdata-sections -o $@ $<
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@plugin_test_7.err: plugin_test_7
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@plugin_test_8.o: two_file_test_main.o two_file_test_1.syms two_file_test_1b.syms two_file_test_2.o ../ld-new plugin_test.so
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ ../ld-new -r -o $@ --no-demangle --plugin "./plugin_test.so" two_file_test_main.o two_file_test_1.syms two_file_test_1b.syms two_file_test_2.o
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@plugin_test_8: plugin_test_8.o gcctestdir/ld
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ $(CXXLINK) -Bgcctestdir/ -Wl,--no-demangle plugin_test_8.o
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@plugin_test_9.err: two_file_test_main.o two_file_test_1c.syms two_file_test_2.syms gcctestdir/ld plugin_test.so
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ @echo $(CXXLINK) -Bgcctestdir/ -o plugin_test_9 -Wl,--no-demangle,--plugin,"./plugin_test.so" two_file_test_main.o two_file_test_1c.syms two_file_test_2.syms "2>$@"
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ @if $(CXXLINK) -Bgcctestdir/ -o plugin_test_9 -Wl,--no-demangle,--plugin,"./plugin_test.so" two_file_test_main.o two_file_test_1c.syms two_file_test_2.syms 2>$@; then \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ echo 1>&2 "Link of plugin_test_9 should have failed"; \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ rm -f $@; \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ exit 1; \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ fi
+# Make a .syms file that claims to define the symbol _Z4t16av.
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@two_file_test_1c.syms: two_file_test_1.syms two_file_test_1c.o
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ cp two_file_test_1.syms $@.tmp
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ grep "_Z4t16av" two_file_test_1b.syms >> $@.tmp
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ mv -f $@.tmp $@
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@two_file_test_1c.o: two_file_test_1.o
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ cp two_file_test_1.o $@
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@plugin_test.so: plugin_test.o
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ $(LINK) -Bgcctestdir/ -shared plugin_test.o