commit e4f2b74da0de2f49bb01cf0cc6ad5145b6b651f8
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Oct 6 13:03:31 2015 +0100

    Add include/experimental/bits dir

diff --git a/libstdc++-v3/include/Makefile.am b/libstdc++-v3/include/Makefile.am
index 74100f2..15b7dd8 100644
--- a/libstdc++-v3/include/Makefile.am
+++ b/libstdc++-v3/include/Makefile.am
@@ -650,7 +650,6 @@ experimental_headers = \
 	${experimental_srcdir}/array \
 	${experimental_srcdir}/chrono \
 	${experimental_srcdir}/deque \
-	${experimental_srcdir}/erase_if.h \
 	${experimental_srcdir}/forward_list \
 	${experimental_srcdir}/functional \
 	${experimental_srcdir}/iterator \
@@ -664,7 +663,6 @@ experimental_headers = \
 	${experimental_srcdir}/set \
 	${experimental_srcdir}/string \
 	${experimental_srcdir}/string_view \
-	${experimental_srcdir}/string_view.tcc \
 	${experimental_srcdir}/system_error \
 	${experimental_srcdir}/tuple \
 	${experimental_srcdir}/type_traits \
@@ -673,15 +671,24 @@ experimental_headers = \
 	${experimental_srcdir}/vector \
 	${experimental_filesystem_headers}
 
+experimental_bits_srcdir = ${glibcxx_srcdir}/include/experimental/bits
+experimental_bits_builddir = ./experimental/bits
+experimental_bits_headers = \
+	${experimental_bits_srcdir}/erase_if.h \
+	${experimental_bits_srcdir}/string_view.tcc \
+	${experimental_bits_filesystem_headers}
+
 if ENABLE_FILESYSTEM_TS
 experimental_filesystem_headers = \
-	${experimental_srcdir}/filesystem \
-	${experimental_srcdir}/fs_dir.h \
-	${experimental_srcdir}/fs_fwd.h \
-	${experimental_srcdir}/fs_ops.h \
-	${experimental_srcdir}/fs_path.h
+	${experimental_srcdir}/filesystem
+experimental_bits_filesystem_headers = \
+	${experimental_bits_srcdir}/fs_dir.h \
+	${experimental_bits_srcdir}/fs_fwd.h \
+	${experimental_bits_srcdir}/fs_ops.h \
+	${experimental_bits_srcdir}/fs_path.h
 else
 experimental_filesystem_headers =
+experimental_bits_filesystem_headers =
 endif
 
 # This is the common subset of C++ files that all three "C" header models use.
@@ -968,8 +975,8 @@ endif
 allstamped = \
 	stamp-std stamp-bits stamp-bits-sup stamp-c_base stamp-c_compatibility \
 	stamp-backward stamp-ext stamp-pb stamp-tr1 stamp-tr2 stamp-decimal \
-	stamp-experimental stamp-debug stamp-parallel stamp-profile \
-	stamp-profile-impl stamp-host
+	stamp-experimental stamp-experimental-bits stamp-debug stamp-parallel \
+	stamp-profile stamp-profile-impl stamp-host
 
 # List of all files that are created by explicit building, editing, or
 # catenation.
@@ -1097,6 +1104,11 @@ stamp-experimental: ${experimental_headers}
 	@-cd ${experimental_builddir} && $(LN_S) $? . 2>/dev/null
 	@$(STAMP) stamp-experimental
 
+stamp-experimental-bits: stamp-experimental ${experimental_bits_headers}
+	@-mkdir -p ${experimental_bits_builddir}
+	@-cd ${experimental_bits_builddir} && $(LN_S) $? . 2>/dev/null
+	@$(STAMP) stamp-experimental-bits
+
 stamp-debug: ${debug_headers}
 	@-mkdir -p ${debug_builddir}
 	@-cd ${debug_builddir} && $(LN_S) $? . 2>/dev/null
@@ -1369,6 +1381,9 @@ install-headers:
 	$(mkinstalldirs) $(DESTDIR)${gxx_include_dir}/${experimental_builddir}
 	for file in ${experimental_headers}; do \
 	  $(INSTALL_DATA) $${file} $(DESTDIR)${gxx_include_dir}/${experimental_builddir}; done
+	$(mkinstalldirs) $(DESTDIR)${gxx_include_dir}/${experimental_bits_builddir}
+	for file in ${experimental_bits_headers}; do \
+	  $(INSTALL_DATA) $${file} $(DESTDIR)${gxx_include_dir}/${experimental_bits_builddir}; done
 	$(mkinstalldirs) $(DESTDIR)${gxx_include_dir}/${c_base_builddir}
 	for file in ${c_base_headers}; do \
 	  $(INSTALL_DATA) $${file} $(DESTDIR)${gxx_include_dir}/${c_base_builddir}; done
@@ -1415,9 +1430,11 @@ clean-local:
 # be made.)
 .PRECIOUS: $(std_headers) $(c_base_headers) $(tr1_headers) $(tr2_headers)
 	   $(decimal_headers) $(ext_headers) $(experimental_headers)
+	   $(experimental_bits_headers)
 $(std_headers): ; @:
 $(c_base_headers): ; @:
 $(tr1_headers): ; @:
 $(decimal_headers): ; @:
 $(ext_headers): ; @:
 $(experimental_headers): ; @:
+$(experimental_bits_headers): ; @:
diff --git a/libstdc++-v3/include/experimental/filesystem b/libstdc++-v3/include/experimental/filesystem
index db7ab11..6713463 100644
--- a/libstdc++-v3/include/experimental/filesystem
+++ b/libstdc++-v3/include/experimental/filesystem
@@ -35,10 +35,10 @@
 # include <bits/c++0x_warning.h>
 #else
 
-#include <experimental/fs_fwd.h>
-#include <experimental/fs_path.h>
-#include <experimental/fs_dir.h>
-#include <experimental/fs_ops.h>
+#include <experimental/bits/fs_fwd.h>
+#include <experimental/bits/fs_path.h>
+#include <experimental/bits/fs_dir.h>
+#include <experimental/bits/fs_ops.h>
 
 #define __cpp_lib_experimental_filesystem 201406
 
diff --git a/libstdc++-v3/include/experimental/map b/libstdc++-v3/include/experimental/map
index e4b3620..89bf260 100644
--- a/libstdc++-v3/include/experimental/map
+++ b/libstdc++-v3/include/experimental/map
@@ -36,7 +36,7 @@
 #else
 
 #include <map>
-#include <experimental/erase_if.h>
+#include <experimental/bits/erase_if.h>
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
diff --git a/libstdc++-v3/include/experimental/set b/libstdc++-v3/include/experimental/set
index c742d91..709fe32 100644
--- a/libstdc++-v3/include/experimental/set
+++ b/libstdc++-v3/include/experimental/set
@@ -36,7 +36,7 @@
 #else
 
 #include <set>
-#include <experimental/erase_if.h>
+#include <experimental/bits/erase_if.h>
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
diff --git a/libstdc++-v3/include/experimental/string_view b/libstdc++-v3/include/experimental/string_view
index 9dca400..9931ad0 100644
--- a/libstdc++-v3/include/experimental/string_view
+++ b/libstdc++-v3/include/experimental/string_view
@@ -686,7 +686,7 @@ _GLIBCXX_END_NAMESPACE_VERSION
 } // namespace experimental
 } // namespace std
 
-#include <experimental/string_view.tcc>
+#include <experimental/bits/string_view.tcc>
 
 #endif // __cplusplus <= 201103L
 
diff --git a/libstdc++-v3/include/experimental/unordered_map b/libstdc++-v3/include/experimental/unordered_map
index d3a578e..c80c382 100644
--- a/libstdc++-v3/include/experimental/unordered_map
+++ b/libstdc++-v3/include/experimental/unordered_map
@@ -36,7 +36,7 @@
 #else
 
 #include <unordered_map>
-#include <experimental/erase_if.h>
+#include <experimental/bits/erase_if.h>
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
diff --git a/libstdc++-v3/include/experimental/unordered_set b/libstdc++-v3/include/experimental/unordered_set
index 2e5e08a..8461f9c 100644
--- a/libstdc++-v3/include/experimental/unordered_set
+++ b/libstdc++-v3/include/experimental/unordered_set
@@ -36,7 +36,7 @@
 #else
 
 #include <unordered_set>
-#include <experimental/erase_if.h>
+#include <experimental/bits/erase_if.h>
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {