make/lib/CompileGtest.gmk

rev 12432 : 8171408: [aix] TOC overflow when linking the gtest libjvm.so
Reviewed-by: dholmes, simonis, erikj

*** 52,61 ****
--- 52,68 ----
          $(call create-mapfile)
  endif
  
  # Disabling switch warning for clang because of test source.
  
+ # Note: On AIX, the gtest test classes linked into the libjvm.so push the TOC
+ # size beyond 64k, so we need to link with bigtoc. However, this means that
+ # -qpic=large would be advisable to lessen the performance effect of bigtoc.
+ # But we want to avoid imposing -qpic=large onto the regular libjvm.so, which
+ # has no problem with its TOC, so do this only for object files which are
+ # exclusive to the gtest libjvm.so.
+ 
  $(eval $(call SetupNativeCompilation, BUILD_GTEST_LIBJVM, \
      TOOLCHAIN := TOOLCHAIN_LINK_CXX, \
      LIBRARY := jvm, \
      OUTPUT_DIR := $(JVM_OUTPUTDIR)/gtest, \
      OBJECT_DIR := $(JVM_OUTPUTDIR)/gtest/objs, \
*** 70,87 ****
--- 77,96 ----
          -I$(GTEST_FRAMEWORK_SRC)/include \
          $(addprefix -I,$(GTEST_TEST_SRC)), \
      CFLAGS_windows := -EHsc, \
      CFLAGS_solaris := -DGTEST_HAS_EXCEPTIONS=0 -library=stlport4, \
      CFLAGS_macosx := -DGTEST_OS_MAC=1, \
+     CFLAGS_aix := -qpic=large, \
      CFLAGS_DEBUG_SYMBOLS := $(JVM_CFLAGS_SYMBOLS), \
      CXXFLAGS_DEBUG_SYMBOLS := $(JVM_CFLAGS_SYMBOLS), \
      DISABLED_WARNINGS_gcc := undef, \
      DISABLED_WARNINGS_clang := undef switch format-nonliteral \
          tautological-undefined-compare $(BUILD_LIBJVM_DISABLED_WARNINGS_clang), \
      DISABLED_WARNINGS_solstudio := identexpected, \
      LDFLAGS := $(JVM_LDFLAGS), \
      LDFLAGS_solaris := -library=stlport4 $(call SET_SHARED_LIBRARY_ORIGIN), \
+     LDFLAGS_aix := -bbigtoc, \
      LIBS := $(JVM_LIBS), \
      OPTIMIZATION := $(JVM_OPTIMIZATION), \
      MAPFILE := $(GTEST_JVM_MAPFILE), \
      USE_MAPFILE_FOR_SYMBOLS := true, \
      COPY_DEBUG_SYMBOLS := $(GTEST_COPY_DEBUG_SYMBOLS), \