Implement <concepts> header for C++20

There are currently no tests for [concepts.compare], but they will be
added ASAP.

	* include/Makefile.am: Add new header.
	* include/Makefile.in: Regenerate.
	* include/precompiled/stdc++.h: Include <concepts>.
	* include/std/concepts: New header for C++20.
	* include/std/version (__cpp_lib_concepts): Define.
	* scripts/create_testsuite_files: Look for test files in new std
	directory.
	* testsuite/libstdc++-dg/conformance.exp: Likewise.
	* testsuite/std/concepts/concepts.callable/invocable.cc: New test.
	* testsuite/std/concepts/concepts.callable/regular_invocable.cc: New
	test.
	* testsuite/std/concepts/concepts.callable/relation.cc: New test.
	* testsuite/std/concepts/concepts.callable/strictweakorder.cc: New
	test.
	* testsuite/std/concepts/concepts.lang/concept.arithmetic/
	floating_point.cc: New test.
	* testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc:
	New test.
	* testsuite/std/concepts/concepts.lang/concept.arithmetic/
	signed_integral.cc: New test.
	* testsuite/std/concepts/concepts.lang/concept.arithmetic/
	unsigned_integral.cc: New test.
	* testsuite/std/concepts/concepts.lang/concept.assignable/1.cc: New
	test.
	* testsuite/std/concepts/concepts.lang/concept.common/1.cc: New test.
	* testsuite/std/concepts/concepts.lang/concept.commonref/1.cc: New
	test.
	* testsuite/std/concepts/concepts.lang/concept.constructible/1.cc:
	New test.
	* testsuite/std/concepts/concepts.lang/concept.convertible/1.cc:
	New test.
	* testsuite/std/concepts/concepts.lang/concept.copyconstructible/1.cc:
	New test.
	* testsuite/std/concepts/concepts.lang/concept.defaultconstructible/
	1.cc: New test.
	* testsuite/std/concepts/concepts.lang/concept.derived/1.cc:
	New test.
	* testsuite/std/concepts/concepts.lang/concept.destructible/1.cc:
	New test.
	* testsuite/std/concepts/concepts.lang/concept.moveconstructible/1.cc:
	New test.
	* testsuite/std/concepts/concepts.lang/concept.same/1.cc:
	New test.
	* testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc:
	New test.
	* testsuite/std/concepts/concepts.lang/concept.swappable/swappable.cc:
	New test.
	* testsuite/std/concepts/concepts.lang/concept.swappable/
	swappable_with.cc: New test.
	* testsuite/std/concepts/concepts.object/copyable.cc: New test.
	* testsuite/std/concepts/concepts.object/movable.cc: New test.
	* testsuite/std/concepts/concepts.object/regular.cc: New test.
	* testsuite/std/concepts/concepts.object/semiregular.cc: New test.

From-SVN: r276892

1 files changed, 4 insertions, 3 deletions

diff --git a/libstdc++-v3/include/Makefile.in b/libstdc++-v3/include/Makefile.in
index 24e1363951c..5d0488846ff 100644
--- a/libstdc++-v3/include/Makefile.in
+++ b/libstdc++-v3/include/Makefile.in
@@ -380,6 +380,7 @@ std_headers = \
 	${std_srcdir}/chrono \
 	${std_srcdir}/codecvt \
 	${std_srcdir}/complex \
+	${std_srcdir}/concepts \
 	${std_srcdir}/condition_variable \
 	${std_srcdir}/deque \
 	${std_srcdir}/execution \
@@ -1853,8 +1854,8 @@ ${pch3_output}: ${pch3_source} ${pch2_output}
 # This is a subset of the full install-headers rule.  We only need <ciso646>,
 # <cstddef>, <cfloat>, <limits>, <climits>, <version>, <cstdint>, <cstdlib>,
 # <new>, <typeinfo>, <exception>, <initializer_list>, <cstdalign>, <cstdarg>,
-# <cstdbool>, <type_traits>, <bit>, <atomic>, and any files which they include
-# (and which we provide).
+# <concepts>, <cstdbool>, <type_traits>, <bit>, <atomic>,
+# and any files which they include (and which we provide).
 # <new>, <typeinfo>, <exception>, and <initializer_list> are installed by
 # libsupc++, so only the others and the sub-includes are copied here.
 install-freestanding-headers:
@@ -1867,7 +1868,7 @@ install-freestanding-headers:
 	  ${glibcxx_srcdir}/$(CPU_DEFINES_SRCDIR)/cpu_defines.h; do \
 	  $(INSTALL_DATA) $${file} $(DESTDIR)${host_installdir}; done
 	$(mkinstalldirs) $(DESTDIR)${gxx_include_dir}/${std_builddir}
-	for file in limits type_traits atomic bit version; do \
+	for file in limits type_traits atomic bit concepts version; do \
 	  $(INSTALL_DATA) ${std_builddir}/$${file} $(DESTDIR)${gxx_include_dir}/${std_builddir}; done
 	$(mkinstalldirs) $(DESTDIR)${gxx_include_dir}/${c_base_builddir}
 	for file in ciso646 cstddef cfloat climits cstdint cstdlib \