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| author | Jason Merrill <jason@redhat.com> | 2020-05-18 14:28:16 -0400 |
|---|---|---|
| committer | Jason Merrill <jason@redhat.com> | 2020-05-18 14:29:18 -0400 |
| commit | 5329b59a2e13dabbe2038af0fe2e3cf5fc7f98ed (patch) | |
| tree | b5c78d4c1858c2bcda7f6fdd7ef5133d978019ec /gcc/doc | |
| parent | e5abd1cb9160619721336ed800779a01548231f1 (diff) | |
| download | gcc-5329b59a2e13dabbe2038af0fe2e3cf5fc7f98ed.zip gcc-5329b59a2e13dabbe2038af0fe2e3cf5fc7f98ed.tar.gz gcc-5329b59a2e13dabbe2038af0fe2e3cf5fc7f98ed.tar.bz2 | |
bootstrap: Update requirement to C++11.
There was general agreement last November that we would move to allowing
C++11 features to be used in GCC 11; this patch implements that direction.
ChangeLog
2020-05-18 Jason Merrill <jason@redhat.com>
* configure.ac: Update bootstrap dialect to -std=c++11.
config/ChangeLog
2020-05-18 Jason Merrill <jason@redhat.com>
* ax_cxx_compile_stdcxx.m4: Import from autoconf archive with
an adjustment to try the default mode.
gcc/ChangeLog
2020-05-18 Jason Merrill <jason@redhat.com>
* aclocal.m4: Add ax_cxx_compile_stdcxx.m4.
* configure.ac: Use AX_CXX_COMPILE_STDCXX(11).
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/install.texi | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi index 876b04f..c367f4f 100644 --- a/gcc/doc/install.texi +++ b/gcc/doc/install.texi @@ -238,18 +238,20 @@ described below. @heading Tools/packages necessary for building GCC @table @asis -@item ISO C++98 compiler -Necessary to bootstrap GCC, although versions of GCC prior -to 4.8 also allow bootstrapping with a ISO C89 compiler and versions -of GCC prior to 3.4 also allow bootstrapping with a traditional -(K&R) C compiler. +@item ISO C++11 compiler +Necessary to bootstrap GCC. + +Versions of GCC prior to 11 also allow bootstrapping with an ISO C++98 +compiler, versions of GCC prior to 4.8 also allow bootstrapping with a +ISO C89 compiler, and versions of GCC prior to 3.4 also allow +bootstrapping with a traditional (K&R) C compiler. To build all languages in a cross-compiler or other configuration where 3-stage bootstrap is not performed, you need to start with an existing -GCC binary (version 3.4 or later) because source code for language +GCC binary (version 4.8 or later) because source code for language frontends other than C might use GCC extensions. -Note that to bootstrap GCC with versions of GCC earlier than 3.4, you +Note that to bootstrap GCC with versions of GCC earlier than 4.8, you may need to use @option{--disable-stage1-checking}, though bootstrapping the compiler with such earlier compilers is strongly discouraged. |