8327045: Consolidate -fvisibility=hidden as a basic flag for all comp…

…ilation

Reviewed-by: erikj

make/autoconf/flags-cflags.m4

@@ -537,7 +537,7 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER],
 
   if test "x$TOOLCHAIN_TYPE" = xgcc; then
     TOOLCHAIN_CFLAGS_JVM="$TOOLCHAIN_CFLAGS_JVM -fstack-protector"
-    TOOLCHAIN_CFLAGS_JDK="-pipe -fstack-protector"
+    TOOLCHAIN_CFLAGS_JDK="-fvisibility=hidden -pipe -fstack-protector"
     # reduce lib size on linux in link step, this needs also special compile flags
     # do this on s390x also for libjvm (where serviceability agent is not supported)
     if test "x$ENABLE_LINKTIME_GC" = xtrue; then
@@ -572,6 +572,7 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER],
       TOOLCHAIN_CFLAGS_JDK="-pipe"
       TOOLCHAIN_CFLAGS_JDK_CONLY="-fno-strict-aliasing" # technically NOT for CXX
     fi
+    TOOLCHAIN_CFLAGS_JDK="$TOOLCHAIN_CFLAGS_JDK -fvisibility=hidden"
 
   elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
     # The -utf-8 option sets source and execution character sets to UTF-8 to enable correct

make/autoconf/flags-ldflags.m4

@@ -61,7 +61,7 @@ AC_DEFUN([FLAGS_SETUP_LDFLAGS_HELPER],
     # add -z,relro (mark relocations read only) for all libs
     # add -z,now ("full relro" - more of the Global Offset Table GOT is marked read only)
     # add --no-as-needed to disable default --as-needed link flag on some GCC toolchains
-    BASIC_LDFLAGS="-Wl,-z,defs -Wl,-z,relro -Wl,-z,now -Wl,--no-as-needed"
+    BASIC_LDFLAGS="-Wl,-z,defs -Wl,-z,relro -Wl,-z,now -Wl,--no-as-needed -Wl,--exclude-libs,ALL"
     # Linux : remove unused code+data in link step
     if test "x$ENABLE_LINKTIME_GC" = xtrue; then
       if test "x$OPENJDK_TARGET_CPU" = xs390x; then
@@ -81,6 +81,9 @@ AC_DEFUN([FLAGS_SETUP_LDFLAGS_HELPER],
 
     LDFLAGS_CXX_PARTIAL_LINKING="$MACHINE_FLAG -r"
 
+    if test "x$OPENJDK_TARGET_OS" = xlinux; then
+      BASIC_LDFLAGS="-Wl,--exclude-libs,ALL"
+    fi
     if test "x$OPENJDK_TARGET_OS" = xaix; then
       BASIC_LDFLAGS="-Wl,-b64 -Wl,-brtl -Wl,-bnorwexec -Wl,-bnolibpath -Wl,-bnoexpall \
         -Wl,-bernotok -Wl,-bdatapsize:64k -Wl,-btextpsize:64k -Wl,-bstackpsize:64k"

make/common/TestFilesCompilation.gmk

@@ -59,31 +59,22 @@ define SetupTestFilesCompilationBody
   # Always include common test functionality
   TEST_CFLAGS := -I$(TOPDIR)/test/lib/native
 
-  ifeq ($(TOOLCHAIN_TYPE), gcc)
-    TEST_CFLAGS += -fvisibility=hidden
-    TEST_LDFLAGS += -Wl,--exclude-libs,ALL
-  else ifeq ($(TOOLCHAIN_TYPE), clang)
-    TEST_CFLAGS += -fvisibility=hidden
-  else ifeq ($(TOOLCHAIN_TYPE), xlc)
-    TEST_CFLAGS += -qvisibility=hidden
-  endif
-
   # The list to depend on starts out empty
   $1 :=
   ifeq ($$($1_TYPE), LIBRARY)
     $1_PREFIX = lib
     $1_OUTPUT_SUBDIR := lib
     $1_BASE_CFLAGS := $(CFLAGS_JDKLIB) $$(TEST_CFLAGS)
     $1_BASE_CXXFLAGS := $(CXXFLAGS_JDKLIB) $$(TEST_CFLAGS)
-    $1_LDFLAGS := $(LDFLAGS_JDKLIB) $$(TEST_LDFLAGS) $$(call SET_SHARED_LIBRARY_ORIGIN)
+    $1_LDFLAGS := $(LDFLAGS_JDKLIB) $$(call SET_SHARED_LIBRARY_ORIGIN)
     $1_COMPILATION_TYPE := LIBRARY
     $1_LOG_TYPE := library
   else ifeq ($$($1_TYPE), PROGRAM)
     $1_PREFIX = exe
     $1_OUTPUT_SUBDIR := bin
     $1_BASE_CFLAGS := $(CFLAGS_JDKEXE) $$(TEST_CFLAGS)
     $1_BASE_CXXFLAGS := $(CXXFLAGS_JDKEXE) $$(TEST_CFLAGS)
-    $1_LDFLAGS := $(LDFLAGS_JDKEXE) $$(TEST_LDFLAGS) $(LDFLAGS_TESTEXE)
+    $1_LDFLAGS := $(LDFLAGS_JDKEXE) $(LDFLAGS_TESTEXE)
     $1_COMPILATION_TYPE := EXECUTABLE
     $1_LOG_TYPE := executable
   else

make/common/modules/LauncherCommon.gmk

@@ -28,19 +28,6 @@ include Modules.gmk
 include ProcessMarkdown.gmk
 include ToolsJdk.gmk
 
-# Tell the compiler not to export any functions unless declared so in
-# the source code. On Windows, this is the default and cannot be changed.
-# On Mac, we have always exported all symbols, probably due to oversight
-# and/or misunderstanding. To emulate this, don't hide any symbols
-# by default.
-# Also provide an override for non-conformant libraries.
-ifeq ($(TOOLCHAIN_TYPE), gcc)
-  LAUNCHER_CFLAGS += -fvisibility=hidden
-  LDFLAGS_JDKEXE += -Wl,--exclude-libs,ALL
-else ifeq ($(TOOLCHAIN_TYPE), clang)
-  LAUNCHER_CFLAGS += -fvisibility=hidden
-endif
-
 LAUNCHER_SRC := $(TOPDIR)/src/java.base/share/native/launcher
 LAUNCHER_CFLAGS += -I$(TOPDIR)/src/java.base/share/native/launcher \
     -I$(TOPDIR)/src/java.base/share/native/libjli \

make/common/modules/LibCommon.gmk

@@ -31,21 +31,6 @@ include JdkNativeCompilation.gmk
 # elegant solution to this.
 WIN_JAVA_LIB := $(SUPPORT_OUTPUTDIR)/native/java.base/libjava/java.lib
 
-# Tell the compiler not to export any functions unless declared so in
-# the source code. On Windows, this is the default and cannot be changed.
-# On Mac, we have always exported all symbols, probably due to oversight
-# and/or misunderstanding. To emulate this, don't hide any symbols
-# by default.
-# Also provide an override for non-conformant libraries.
-ifeq ($(TOOLCHAIN_TYPE), gcc)
-  CFLAGS_JDKLIB += -fvisibility=hidden
-  CXXFLAGS_JDKLIB += -fvisibility=hidden
-  LDFLAGS_JDKLIB += -Wl,--exclude-libs,ALL
-else ifeq ($(TOOLCHAIN_TYPE), clang)
-  CFLAGS_JDKLIB += -fvisibility=hidden
-  CXXFLAGS_JDKLIB += -fvisibility=hidden
-endif
-
 # Put the libraries here.
 INSTALL_LIBRARIES_HERE := $(call FindLibDirForModule, $(MODULE))
 

make/hotspot/lib/CompileJvm.gmk

@@ -155,7 +155,7 @@ endif
 ifeq ($(call isTargetOs, linux), true)
   HOTSPOT_VERSION_SCRIPT := $(TOPDIR)/make/data/hotspot-symbols/version-script.txt
 
-  JVM_LDFLAGS += -Wl,--exclude-libs,ALL -Wl,-version-script=$(HOTSPOT_VERSION_SCRIPT)
+  JVM_LDFLAGS += -Wl,-version-script=$(HOTSPOT_VERSION_SCRIPT)
 endif
 
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