From: redi <redi@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon, 19 Feb 2018 16:02:38 +0000
Subject: [PATCH] PR libstdc++/81797 Add .NOTPARALLEL to include/Makefile for
 darwin

Backport from mainline
2018-02-15  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/81797
	* configure.ac (INCLUDE_DIR_NOTPARALLEL): Define.
	* configure: Regenerate.
	* include/Makefile.am (INCLUDE_DIR_NOTPARALLEL): Add .NOTPARALLEL when
	defined.
	* include/Makefile.in: Regenerate.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@257808 138bc75d-0d04-0410-961f-82ee72b054a4
---

--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -620,6 +620,8 @@ CPU_DEFINES_SRCDIR
 ATOMIC_FLAGS
 ATOMIC_WORD_SRCDIR
 ATOMICITY_SRCDIR
+INCLUDE_DIR_NOTPARALLEL_FALSE
+INCLUDE_DIR_NOTPARALLEL_TRUE
 BUILD_PDF_FALSE
 BUILD_PDF_TRUE
 PDFLATEX
@@ -11601,7 +11603,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11604 "configure"
+#line 11606 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11707,7 +11709,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11710 "configure"
+#line 11712 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -15393,7 +15395,7 @@ $as_echo "$glibcxx_cv_atomic_long_long"
   # Fake what AC_TRY_COMPILE does.
 
     cat > conftest.$ac_ext << EOF
-#line 15396 "configure"
+#line 15398 "configure"
 int main()
 {
   typedef bool atomic_type;
@@ -15428,7 +15430,7 @@ $as_echo "$glibcxx_cv_atomic_bool" >&6;
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 15431 "configure"
+#line 15433 "configure"
 int main()
 {
   typedef short atomic_type;
@@ -15463,7 +15465,7 @@ $as_echo "$glibcxx_cv_atomic_short" >&6;
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 15466 "configure"
+#line 15468 "configure"
 int main()
 {
   // NB: _Atomic_word not necessarily int.
@@ -15499,7 +15501,7 @@ $as_echo "$glibcxx_cv_atomic_int" >&6; }
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 15502 "configure"
+#line 15504 "configure"
 int main()
 {
   typedef long long atomic_type;
@@ -15580,7 +15582,7 @@ $as_echo "$as_me: WARNING: Performance o
   # unnecessary for this test.
 
     cat > conftest.$ac_ext << EOF
-#line 15583 "configure"
+#line 15585 "configure"
 int main()
 {
   _Decimal32 d1;
@@ -15622,7 +15624,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
   # unnecessary for this test.
 
     cat > conftest.$ac_ext << EOF
-#line 15625 "configure"
+#line 15627 "configure"
 template<typename T1, typename T2>
   struct same
   { typedef T2 type; };
@@ -15656,7 +15658,7 @@ $as_echo "$enable_int128" >&6; }
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 15659 "configure"
+#line 15661 "configure"
 template<typename T1, typename T2>
   struct same
   { typedef T2 type; };
@@ -81219,6 +81221,18 @@ else
 fi
 
 
+case "$build" in
+ *-*-darwin* ) glibcxx_include_dir_notparallel=yes ;;
+ * ) glibcxx_include_dir_notparallel=no ;;
+esac
+ if test $glibcxx_include_dir_notparallel = "yes"; then
+  INCLUDE_DIR_NOTPARALLEL_TRUE=
+  INCLUDE_DIR_NOTPARALLEL_FALSE='#'
+else
+  INCLUDE_DIR_NOTPARALLEL_TRUE='#'
+  INCLUDE_DIR_NOTPARALLEL_FALSE=
+fi
+
 
 # Propagate the target-specific source directories through the build chain.
 ATOMICITY_SRCDIR=config/${atomicity_dir}
@@ -81913,6 +81927,10 @@ if test -z "${BUILD_PDF_TRUE}" && test -
   as_fn_error "conditional \"BUILD_PDF\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${INCLUDE_DIR_NOTPARALLEL_TRUE}" && test -z "${INCLUDE_DIR_NOTPARALLEL_FALSE}"; then
+  as_fn_error "conditional \"INCLUDE_DIR_NOTPARALLEL\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 
 : ${CONFIG_STATUS=./config.status}
 ac_write_fail=0
--- a/libstdc++-v3/configure.ac
+++ b/libstdc++-v3/configure.ac
@@ -467,6 +467,12 @@ AM_CONDITIONAL(BUILD_PDF,
 	       test $ac_cv_prog_DBLATEX = "yes" &&
 	       test $ac_cv_prog_PDFLATEX = "yes")
 
+case "$build" in
+ *-*-darwin* ) glibcxx_include_dir_notparallel=yes ;;
+ * ) glibcxx_include_dir_notparallel=no ;;
+esac
+AM_CONDITIONAL(INCLUDE_DIR_NOTPARALLEL,
+               test $glibcxx_include_dir_notparallel = "yes")
 
 # Propagate the target-specific source directories through the build chain.
 ATOMICITY_SRCDIR=config/${atomicity_dir}
--- a/libstdc++-v3/include/Makefile.am
+++ b/libstdc++-v3/include/Makefile.am
@@ -1474,3 +1474,8 @@ $(decimal_headers): ; @:
 $(ext_headers): ; @:
 $(experimental_headers): ; @:
 $(experimental_bits_headers): ; @:
+
+if INCLUDE_DIR_NOTPARALLEL
+# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797
+.NOTPARALLEL:
+endif
--- a/libstdc++-v3/include/Makefile.in
+++ b/libstdc++-v3/include/Makefile.in
@@ -1897,6 +1897,9 @@ $(ext_headers): ; @:
 $(experimental_headers): ; @:
 $(experimental_bits_headers): ; @:
 
+# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797
+@INCLUDE_DIR_NOTPARALLEL_TRUE@.NOTPARALLEL:
+
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
 .NOEXPORT: