Enable -fvisibility-inlines-hidden by default for compilers which

support it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55557 91177308-0d34-0410-b5e6-96231b3b80d8

5 files changed, 148 insertions, 25 deletions

diff --git a/Makefile.config.in b/Makefile.config.in
index f3a9346592..5a0dcd59c3 100644
--- a/Makefile.config.in
+++ b/Makefile.config.in
@@ -234,6 +234,9 @@ ENABLE_THREADS := @ENABLE_THREADS@
 # Do we want to build with position independent code?
 ENABLE_PIC := @ENABLE_PIC@
 
+# Use -fvisibility-inlines-hidden?
+ENABLE_VISIBILITY_INLINES_HIDDEN := @ENABLE_VISIBILITY_INLINES_HIDDEN@
+
 # This option tells the Makefiles to produce verbose output.
 # It essentially prints the commands that make is executing
 #VERBOSE = 1
diff --git a/Makefile.rules b/Makefile.rules
index e99d4960bb..6470b8d458 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -241,6 +241,10 @@ else
   endif
 endif
 
+ifeq ($(ENABLE_VISIBILITY_INLINES_HIDDEN),1)
+    CXX.Flags += -fvisibility-inlines-hidden
+endif
+
 # IF REQUIRES_EH=1 is specified then don't disable exceptions
 ifndef REQUIRES_EH
   CXX.Flags += -fno-exceptions
diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index ca160d163a..35d017e1bd 100644
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -975,6 +975,8 @@ if test "$binding_prereqs_failed" = 1 ; then
   AC_MSG_ERROR([Prequisites for bindings not satisfied. Fix them or use configure --disable-bindings.])
 fi
 
+dnl Determine if the compiler supports -fvisibility-inlines-hidden.
+AC_CXX_USE_VISIBILITY_INLINES_HIDDEN
 
 dnl===-----------------------------------------------------------------------===
 dnl===
diff --git a/autoconf/m4/visibility_inlines_hidden.m4 b/autoconf/m4/visibility_inlines_hidden.m4
new file mode 100644
index 0000000000..42ddbe9128
--- /dev/null
+++ b/autoconf/m4/visibility_inlines_hidden.m4
@@ -0,0 +1,22 @@
+#
+# Determine if the compiler accepts -fvisibility-inlines-hidden
+#
+# This macro is specific to LLVM.
+#
+AC_DEFUN([AC_CXX_USE_VISIBILITY_INLINES_HIDDEN],
+[AC_CACHE_CHECK([for compiler -fvisibility-inlines-hidden option],
+                [llvm_cv_cxx_visibility_inlines_hidden],
+[ AC_LANG_PUSH([C++])
+  oldcxxflags="$CXXFLAGS"
+  CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden"
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
+    [llvm_cv_cxx_visibility_inlines_hidden=yes],[llvm_cv_cxx_visibility_inlines_hidden=no])
+  CXXFLAGS="$oldcxxflags"
+  AC_LANG_POP([C++])
+])
+if test "$llvm_cv_cxx_visibility_inlines_hidden" = yes ; then
+  AC_SUBST([ENABLE_VISIBILITY_INLINES_HIDDEN],[1])
+else
+  AC_SUBST([ENABLE_VISIBILITY_INLINES_HIDDEN],[0])
+fi
+])
diff --git a/configure b/configure
index eaf6e1575b..af8144d67a 100755
--- a/configure
+++ b/configure
@@ -928,6 +928,7 @@ LLVM_CONFIGTIME
 BINDINGS_TO_BUILD
 ALL_BINDINGS
 OCAML_LIBDIR
+ENABLE_VISIBILITY_INLINES_HIDDEN
 LIBOBJS
 LTLIBOBJS'
 ac_subst_files=''
@@ -10646,7 +10647,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 10649 "configure"
+#line 10650 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12790,7 +12791,7 @@ ia64-*-hpux*)
   ;;
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 12793 "configure"' > conftest.$ac_ext
+  echo '#line 12794 "configure"' > conftest.$ac_ext
   if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   (eval $ac_compile) 2>&5
   ac_status=$?
@@ -14508,11 +14509,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:14511: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:14512: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:14515: \$? = $ac_status" >&5
+   echo "$as_me:14516: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -14776,11 +14777,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:14779: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:14780: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:14783: \$? = $ac_status" >&5
+   echo "$as_me:14784: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -14880,11 +14881,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:14883: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:14884: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:14887: \$? = $ac_status" >&5
+   echo "$as_me:14888: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -17332,7 +17333,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 17335 "configure"
+#line 17336 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -17432,7 +17433,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 17435 "configure"
+#line 17436 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -19800,11 +19801,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:19803: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:19804: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:19807: \$? = $ac_status" >&5
+   echo "$as_me:19808: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -19904,11 +19905,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:19907: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:19908: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:19911: \$? = $ac_status" >&5
+   echo "$as_me:19912: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -21474,11 +21475,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:21477: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:21478: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:21481: \$? = $ac_status" >&5
+   echo "$as_me:21482: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -21578,11 +21579,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:21581: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:21582: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:21585: \$? = $ac_status" >&5
+   echo "$as_me:21586: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -23813,11 +23814,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:23816: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:23817: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:23820: \$? = $ac_status" >&5
+   echo "$as_me:23821: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -24081,11 +24082,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:24084: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:24085: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:24088: \$? = $ac_status" >&5
+   echo "$as_me:24089: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -24185,11 +24186,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:24188: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:24189: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:24192: \$? = $ac_status" >&5
+   echo "$as_me:24193: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -34265,6 +34266,96 @@ echo "$as_me: error: Prequisites for bindings not satisfied. Fix them or use con
    { (exit 1); exit 1; }; }
 fi
 
+{ echo "$as_me:$LINENO: checking for compiler -fvisibility-inlines-hidden option" >&5
+echo $ECHO_N "checking for compiler -fvisibility-inlines-hidden option... $ECHO_C" >&6; }
+if test "${llvm_cv_cxx_visibility_inlines_hidden+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+   ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+  oldcxxflags="$CXXFLAGS"
+  CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden"
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag" || test ! -s conftest.err'
+  { (case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  llvm_cv_cxx_visibility_inlines_hidden=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	llvm_cv_cxx_visibility_inlines_hidden=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CXXFLAGS="$oldcxxflags"
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+{ echo "$as_me:$LINENO: result: $llvm_cv_cxx_visibility_inlines_hidden" >&5
+echo "${ECHO_T}$llvm_cv_cxx_visibility_inlines_hidden" >&6; }
+if test "$llvm_cv_cxx_visibility_inlines_hidden" = yes ; then
+  ENABLE_VISIBILITY_INLINES_HIDDEN=1
+
+else
+  ENABLE_VISIBILITY_INLINES_HIDDEN=0
+
+fi
+
 
 
 ac_config_headers="$ac_config_headers include/llvm/Config/config.h"
@@ -35189,11 +35280,12 @@ LLVM_CONFIGTIME!$LLVM_CONFIGTIME$ac_delim
 BINDINGS_TO_BUILD!$BINDINGS_TO_BUILD$ac_delim
 ALL_BINDINGS!$ALL_BINDINGS$ac_delim
 OCAML_LIBDIR!$OCAML_LIBDIR$ac_delim
+ENABLE_VISIBILITY_INLINES_HIDDEN!$ENABLE_VISIBILITY_INLINES_HIDDEN$ac_delim
 LIBOBJS!$LIBOBJS$ac_delim
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 77; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 78; then
     break
   elif $ac_last_try; then
     { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5