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| author | Ian Lance Taylor <iant@google.com> | 2016-08-30 03:27:43 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2016-08-30 03:27:43 +0000 |
| commit | 2adb671d186febfe9610f8d8ac8ba296b79d2c90 (patch) | |
| tree | 4e9dd1801c8fffce5ca94c71063a0a5a3acd0d30 /gcc/go/gccgo.texi | |
| parent | 0b390d608949864df9ce128a5090b1788dc07b16 (diff) | |
| download | gcc-2adb671d186febfe9610f8d8ac8ba296b79d2c90.zip gcc-2adb671d186febfe9610f8d8ac8ba296b79d2c90.tar.gz gcc-2adb671d186febfe9610f8d8ac8ba296b79d2c90.tar.bz2 | |
compiler: add -fgo-c-header=FILE to create a C header
The new -fgo-c-header=FILE option will write a C header file defining
all the struct types and numeric const values in package scope. This
will be used when building the Go runtime package (libgo/go/runtime) to
generate a C header file that may be included by the C code in the C
runtime package (libgo/runtime).
This will ensure that the Go code and C code are working with the same
data structures as we convert the runtime from C to Go to upgrade to the
current GC runtime, notably the concurrent garbage collector.
Reviewed-on: https://go-review.googlesource.com/28000
* lang.opt (fgo-c-header, fgo-compiling-runtime): New options.
* go-c.h (struct go_create_gogo_args): Define.
(go_create_gogo): Change declaration to take struct pointer.
* go-lang.c (go_c_header): New static variable.
(go_langhook_init): Update call to go_create_gogo.
* gccgo.texi (Invoking gccgo): Document -fgo-c-header and
-fgo-compiling-runtime.
From-SVN: r239852
Diffstat (limited to 'gcc/go/gccgo.texi')
| -rw-r--r-- | gcc/go/gccgo.texi | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/go/gccgo.texi b/gcc/go/gccgo.texi index 6544b79..04ce3e9 100644 --- a/gcc/go/gccgo.texi +++ b/gcc/go/gccgo.texi @@ -239,6 +239,17 @@ heap when possible. In the future this may be the default. Output escape analysis debugging information. Larger values of @var{n} generate more information. +@item -fgo-c-header=@var{file} +@cindex @option{-fgo-c-header} +Write top-level named Go struct definitions to @var{file} as C code. +This is used when compiling the runtime package. + +@item -fgo-compiling-runtime +@cindex @option{-fgo-compiling-runtime} +Apply special rules for compiling the runtime package. Implicit +memory allocation is forbidden. Some additional compiler directives +are supported. + @item -g @cindex @option{-g for gccgo} This is the standard @command{gcc} option (@pxref{Debugging Options, , |