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| author | Iain Buclaw <ibuclaw@gdcproject.org> | 2021-11-17 10:55:08 +0100 |
|---|---|---|
| committer | Iain Buclaw <ibuclaw@gdcproject.org> | 2021-12-01 11:56:37 +0100 |
| commit | d376b73aa12d183e3040456c7641fb74500d0727 (patch) | |
| tree | e957e6ccfb9fe44eec0c90b0fe54614a8ea65e12 | |
| parent | 47fe7be66e18a154ace54a9c98366e9e023e9dd3 (diff) | |
| download | gcc-d376b73aa12d183e3040456c7641fb74500d0727.zip gcc-d376b73aa12d183e3040456c7641fb74500d0727.tar.gz gcc-d376b73aa12d183e3040456c7641fb74500d0727.tar.bz2 | |
doc, d: Add note that D front end now requires GDC installed in order to bootstrap.
gcc/ChangeLog:
* doc/install.texi (Prerequisites): Add note that D front end now
requires GDC installed in order to bootstrap.
(Building): Add D compiler section, referencing prerequisites.
| -rw-r--r-- | gcc/doc/install.texi | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi index 094469b..6f999a2 100644 --- a/gcc/doc/install.texi +++ b/gcc/doc/install.texi @@ -289,6 +289,25 @@ Ada runtime libraries. You can check that your build environment is clean by verifying that @samp{gnatls -v} lists only one explicit path in each section. +@item @anchor{GDC-prerequisite}GDC + +In order to build GDC, the D compiler, you need a working GDC +compiler (GCC version 9.1 or later), as the D front end is written in D. + +Versions of GDC prior to 12 can be built with an ISO C++11 compiler, which can +then be installed and used to bootstrap newer versions of the D front end. + +It is strongly recommended to use an older version of GDC to build GDC. More +recent versions of GDC than the version built are not guaranteed to work and +will often fail during the build with compilation errors relating to +deprecations or removed features. + +Note that @command{configure} does not test whether the GDC installation works +and has a sufficiently recent version. Though the implementation of the D +front end does not make use of any GDC-specific extensions, or novel features +of the D language, if too old a GDC version is installed and +@option{--enable-languages=d} is used, the build will fail. + @item A ``working'' POSIX compatible shell, or GNU bash Necessary when running @command{configure} because some @@ -2977,6 +2996,15 @@ and network filesystems. @uref{prerequisites.html#GNAT-prerequisite,,GNAT prerequisites}. @end ifhtml +@section Building the D compiler + +@ifnothtml +@ref{GDC-prerequisite}. +@end ifnothtml +@ifhtml +@uref{prerequisites.html#GDC-prerequisite,,GDC prerequisites}. +@end ifhtml + @section Building with profile feedback It is possible to use profile feedback to optimize the compiler itself. This |