Volker,
Thanks for the great analysis! Your trivial fix seems reasonable. I
opened https://bugs.openjdk.java.net/browse/JDK-8141416 to track this.
It's up for grabs to add that line. :) (Otherwise I'll fix it when I
have the time.)
/Magnus
On 2015-11-04 08:49, Volker Simonis wrote:
Hi Johnathan,
this is a known problem - at least to me :)
It is caused by a peculiarity of the gcc version on Ubuntu where "gcc
-dumpversion" doesn't print a micro-version:
Ubuntu:
$ gcc -dumpversion
4.6
Any other Linux:
$ gcc -dumpversion
4.8.3
This "feature" is tracked under
https://bugs.launchpad.net/ubuntu/+source/gcc-4.8/+bug/1360404 and has
been fixed for gcc 4.9 but won't be fixed for older versions of gcc.
In hotspot/make/linux/makefiles/gcc.make we parse the micro-version of
gcc and use it in the following way:
CC_VER_MICRO := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f3)
ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 1 \&
$(CC_VER_MICRO) = 1), 1)
$(error "GCC $(CC_VER_MAJOR).$(CC_VER_MINOR).$(CC_VER_MICRO) not
supported because of
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=27724";)
endif
The shell expression results in a syntax error if $(CC_VER_MICRO)
because it expaands to something like "expr 4 = 4 & 3 = 1 & = 1"
I haven't fixed it until now because it does no harm. The
corresponding check is for gcc 4.1.1 but the affected Ubuntu gcc
compilers are 4.6, 4.7 and 4.8.
A trivial fix would be to set CC_VER_MICRO to "0" by default.
Regards,
Volker
On Tue, Nov 3, 2015 at 10:45 PM, Jonathan Gibbons
<jonathan.gibb...@oracle.com> wrote:
I'm seeing a bunch of "syntax error"s on an otherwise successful build of
jdk9/dev.
This is on Ubuntu Linux, 14.04.
Is this a known problem; should I be worried?
-- Jon
Creating support/jce/policy/unlimited/US_export_policy.jar
Creating support/jce/policy/limited/local_policy.jar
Creating support/jce/policy/unlimited/local_policy.jar
Generating java.security
expr: syntax error
expr: syntax error
expr: syntax error
expr: syntax error
expr: syntax error
expr: syntax error
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Warning: generation and use of skeletons and static stubs for JRMP
is deprecated. Skeletons are unnecessary, and static stubs have
been superseded by dynamically generated stubs. Users are
encouraged to migrate away from using rmic to generate skeletons and static
stubs. See the documentation for java.rmi.server.UnicastRemoteObject.
expr: syntax error
expr: syntax error
expr: syntax error
All done.
Generating linux_amd64_docs/jvmti.html
Creating libverify.so from 2 file(s)
Creating libjava.so from 61 file(s)
Creating libfdlibm.a from 57 file(s)
