gcj: error trying to exec 'ecj1': execvp

Mon Apr 20 13:27:00 GMT 2009

Hi Andrew,
Thanks a lot for this link!
Do I have to rename the ecj-4.3.jar to ecj.jar to be recognised ?
what do you mean exactly by "topmost source tree" ? Is
~/gcc-4_4-branch (i.e. the main folder created by the the svn checkout
command) OK ?
How can I make sure that the ./configure script has "found" it ?
Cheers
David
2009年4月20日 Andrew Haley <aph@redhat.com>:
> David Michel wrote:
>> Hi All,
>>>> I recently installed the newest gcj 4.4 (see
>> http://gcc.gnu.org/ml/java/2009-03/msg00028.html) and I am trying to
>> compile a awt/swing project.
>>>> As I have an older version of gcj (4.2) installed on the system, I
>> call gcj with its complete path and I updated LD_LIBRARY_PATH such as
>>>> $ echo $LD_LIBRARY_PATH
>> :/usr/local/lib/:/local/gcc-4_4-branch/install/lib/
>>>> So I'm trying to compile foo.java into its object file foo.o like so:
>>>> $ /local/gcc-4_4-branch/install/bin/gcj -O0 -g0 -v  -c foo.java -o foo.o
>> Using built-in specs.
>> Reading specs from
>> /local/gcc-4_4-branch/install/lib/gcc/i686-pc-linux-gnu/4.4.0/../../../libgcj.spec
>> rename spec startfile to startfileorig
>> rename spec lib to liborig
>> Target: i686-pc-linux-gnu
>> Configured with:
>> /home/micd/gcc-4_4-branch/obj-x86_64-unknown-linux-gnu/../configure
>> --enable-languages=java --prefix=/local/gcc-4_4-branch/install
>> --enable-java-home --enable-java-awt=gtk
>> Thread model: posix
>> gcc version 4.4.0 20090331 (prerelease) (GCC)
>> COLLECT_GCC_OPTIONS='-fsaw-java-file' '-O0' '-g0' '-v' '-c' '-o'
>> 'foo.o' '-fbootclasspath=./:/local/gcc-4_4-branch/install/share/java/libgcj-4.4.0.jar'
>> '-shared-libgcc' '-mtune=generic'
>>  ecj1 foo.java -g0
>> -fbootclasspath=./:/local/gcc-4_4-branch/install/share/java/libgcj-4.4.0.jar
>> -g0 -fsource=1.5 -ftarget=1.5 -fzip-dependency /tmp/cc3BLQiG.zip
>> -fzip-target /tmp/ccQkVPqc.jar
>> gcj: error trying to exec 'ecj1': execvp: No such file or directory
>>>> How can I solve this ? Isn't ecj a reference to the Eclipse java
>> compiler (what is it doing with gcc) ? and what is execvp ?
>> http://gcc.gnu.org/install/configure.html:
>> --with-ecj-jar=filename This option can be used to specify the
>    location of an external jar file containing the Eclipse Java
>    compiler. A specially modified version of this compiler is used by
>    gcj to parse .java source files. If this option is given, the
>    `libjava' build will create and install an ecj1 executable which
>    uses this jar file at runtime.
>>    If this option is not given, but an ecj.jar file is found in the
>    topmost source tree at configure time, then the `libgcj' build
>    will create and install ecj1, and will also install the discovered
>    ecj.jar into a suitable place in the install tree.
>>    If ecj1 is not installed, then the user will have to supply one on
>    his path in order for gcj to properly parse .java source files. A
>    suitable jar is available from ftp://sourceware.org/pub/java/.
>> Andrew.
>