Tested x86_64-linux. Pushed to trunk.
I've taken the liberty of assuming that the change to
gcc/doc/install.texi is sufficiently "obviously true" to not require
separate approval.
-- >8 --
This is a generated header but regenerating it requires the manual step
of running 'make -C include update-version' in the libstdc++ build dir.
Make it regenerate automatically when --enable-maintainer-mode is used.
libstdc++-v3/ChangeLog:
* include/Makefile.am [MAINTAINER_MODE]: Add target to
automatically update <bits/version.h>.
* include/Makefile.in: Regenerate.
gcc/ChangeLog:
* doc/install.texi (Prerequisites): Document use of autogen for
libstdc++.
---
gcc/doc/install.texi | 2 ++
libstdc++-v3/include/Makefile.am | 6 ++++++
libstdc++-v3/include/Makefile.in | 4 ++++
3 files changed, 12 insertions(+)
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index e3650e0c4f4..014ca25aa62 100644
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -545,6 +545,8 @@ Necessary to run @samp{make check} for @file{fixinc}.
Necessary to regenerate the top level @file{Makefile.in} file from
@file{Makefile.tpl} and @file{Makefile.def}.
+Necessary to regenerate the @file{bits/version.h} header for libstdc++.
+
@item Flex version 2.5.4 (or later)
Necessary when modifying @file{*.l} files.
diff --git a/libstdc++-v3/include/Makefile.am b/libstdc++-v3/include/Makefile.am
index 64152351ed0..cb902de36ae 100644
--- a/libstdc++-v3/include/Makefile.am
+++ b/libstdc++-v3/include/Makefile.am
@@ -1480,6 +1480,12 @@ update-version:
cd ${bits_srcdir} && \
autogen version.def
+if MAINTAINER_MODE
+# Regenerate it automatically in maintainer mode.
+${bits_srcdir}/version.h: ${bits_srcdir}/version.def ${bits_srcdir}/version.tpl
+ $(MAKE) update-version
+endif
+
# The real deal.
install-data-local: install-headers
install-headers:
