Patch can bootstrap on x86_64-linux-gnu and survives regression tests.
Ready to be installed?
Thanks,
Martin
gcc/ChangeLog:
* jobserver.h (jobserver_info::jobserver_info): Parse FIFO
format of --jobserver-auth.
---
gcc/jobserver.h | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/gcc/jobserver.h b/gcc/jobserver.h
index 85453dd3c79..856e326ddfc 100644
--- a/gcc/jobserver.h
+++ b/gcc/jobserver.h
@@ -39,14 +39,22 @@ struct jobserver_info
int rfd = -1;
/* File descriptor for writing used for jobserver communication. */
int wfd = -1;
+ /* Named pipe path. */
+ string pipe_path = "";
/* Return true if jobserver is active. */
bool is_active = false;
};
jobserver_info::jobserver_info ()
{
+ /* Traditionally, GNU make uses opened pipes for jobserver-auth,
+ e.g. --jobserver-auth=3,4.
+ Starting with GNU make 4.4, one can use --jobserver-style=fifo
+ and then named pipe is used: --jobserver-auth=fifo:/tmp/hcsparta. */
+
/* Detect jobserver and drop it if it's not working. */
string js_needle = "--jobserver-auth=";
+ string fifo_prefix = "fifo:";
const char *envval = getenv ("MAKEFLAGS");
if (envval != NULL)
@@ -55,8 +63,15 @@ jobserver_info::jobserver_info ()
size_t n = makeflags.rfind (js_needle);
if (n != string::npos)
{
- if (sscanf (makeflags.c_str () + n + js_needle.size (),
- "%d,%d", &rfd, &wfd) == 2
+ string ending = makeflags.substr (n + js_needle.size ());
+ if (ending.find (fifo_prefix) == 0)
+ {
+ ending = ending.substr (fifo_prefix.size ());
+ pipe_path = ending.substr (0, ending.find (' '));
+ is_active = true;
+ }
+ else if (sscanf (makeflags.c_str () + n + js_needle.size (),
+ "%d,%d", &rfd, &wfd) == 2
&& rfd > 0
&& wfd > 0
&& is_valid_fd (rfd)
--
2.37.1
