diff options
| -rw-r--r-- | .cvsignore | 1 | ||||
| -rwxr-xr-x | INSTALL | 1 | ||||
| -rw-r--r-- | lib/linux-isnptl.c | 15 | ||||
| -rw-r--r-- | man/man1/install.1 | 12 |
4 files changed, 28 insertions, 1 deletions
diff --git a/.cvsignore b/.cvsignore new file mode 100644 index 00000000..04204c7c --- /dev/null +++ b/.cvsignore @@ -0,0 +1 @@ +config @@ -21,6 +21,7 @@ if [ `uname` = Linux ]; then echo " NPTL not found." echo "SYSVERSION=2.4" >$PLAN9/config fi + rm -f ./a.out fi echo "Building mk..." cd src diff --git a/lib/linux-isnptl.c b/lib/linux-isnptl.c new file mode 100644 index 00000000..d28fe878 --- /dev/null +++ b/lib/linux-isnptl.c @@ -0,0 +1,15 @@ +#include <pthread.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> + +int +main(void) +{ + ulong x; + + x = (ulong)pthread_self(); + if(x < 1024*1024) + exit(1); /* NOT NPTL */ + exit(0); +} diff --git a/man/man1/install.1 b/man/man1/install.1 index e070ffba..8a3155e7 100644 --- a/man/man1/install.1 +++ b/man/man1/install.1 @@ -40,7 +40,17 @@ can safely be repeated to rebuild the system from scratch. The system uses different threading implementations on Linux 2.6 and later kernels than on 2.4 and earlier; and on FreeBSD 5 and later kernels than on FreeBSD 4 and earlier. -Running binaries from one class on another may not work. +Running binaries from one class on another will not work. +.PP +Some Linux 2.6 systems (e.g., Gentoo) do not use the new NPTL pthread library +even though the kernel supports them. On these systems, plan9port must +fall back on the threading code intended for Linux 2.4. To accomplish this, +.I INSTALL +checks whether the running system uses NPTL and sets +.B SYSVERSION +in +.B \*9/config +accordingly. .SH FILES .TP .B \*9/lib/moveplan9.files |