Thread: [Cegcc-devel] error: cannot find ltdl.h - when compile the cacao JVM

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[Cegcc-devel] error: cannot find ltdl.h - when compile the cacao JVM

From: 杨永志 <cnz...@gm...> - 2009-01-29 15:23:56

Hey,

When i use cegcc to compile the cacao JVM for wince, i got the error:
 "cannot find ltdl.h"

I build the cegcc in Fedora 7 with source from SVN (in Jan, 2009) and
by the script cegcc/src/build-cegcc.sh

Then i build the GNU Classpath (0.97.2) with

AR=arm-cegcc-ar AS=arm-cegcc-as CXX=arm-cegcc-c++ CPP=arm-cegcc-cpp
CC=arm-cegcc-gcc LD=arm-cegcc-ld DLLTOOL=arm-cegcc-dlltool
NM=arm-cegcc-nm RANLIB=arm-cegcc-ranlib  STRIP=arm-cegcc-strip
WINDRES=arm-cegcc-windres CFLAGS=-g\ -D_WIN32_IE=0x400 ARCH=arm-cegcc
../classpath-0.97.2/configure --prefix=/opt/gnucp --enable-ecj
--disable-gtk-peer --build=i386-linux --target=arm-wince-pe -host=i386

However, when i configure the cacao (0.98) JVM with

AR=arm-cegcc-ar AS=arm-cegcc-as CXX=arm-cegcc-c++ CPP=arm-cegcc-cpp
CC=arm-cegcc-gcc LD=arm-cegcc-ld DLLTOOL=arm-cegcc-dlltool
NM=arm-cegcc-nm RANLIB=arm-cegcc-ranlib  STRIP=arm-cegcc-strip
WINDRES=arm-cegcc-windres CFLAGS=-g\ -D_WIN32_IE=0x400 ARCH=arm-cegcc
../cacao-0.98/configure --prefix=/opt/cacao
--with-classpath-prefix=/opt/gnucp --enable-ecj --disable-gtk-peer
--build=i386-linux --target=arm-wince-pe -host=i386 --disable-zlib

I got the error: "error: cannot find ltdl.h"

I notice that there's a ltdl.h in
"cegcc/src/newlib/newlib/libc/sys/linux/include/ltdl.h"
But i don't know where to put it :(

It seems that the cacao requires a libtool, but it can not find the
libtool when compiled by cegcc.

What is the recommended way to find a libtool?

or, how can i get a JVM, which supports Java SE 1.5 (especially for
the annotation), for wince?

thank you

Ziberg

[Cegcc-devel] error: cannot find ltdl.h - when compile the cacao JVM

From: 杨永志 <cnz...@gm...> - 2009-02-04 09:44:50

After a few days of working and thinking, I guess that the missing of
libtool (ltdl.h) and pthread (in later steps of the configure) causes
the errors.

Furthermore, I guess both the libtool and the pthread have been built
in cegcc. But i can not find them :(

>>>When I check the config.log, I find the following failed command lines:

arm-cegcc-gcc -o conftest.exe -g -O2 -I/opt/cegcc/arm-cegcc/include
-L/opt/cegcc/arm-cegcc/lib conftest.c -lpthread

arm-cegcc-gcc -o conftest.exe -g -O2 -I/opt/cegcc/arm-cegcc/include
-L/opt/cegcc/arm-cegcc/lib conftest.c -ldl

In the file conftest.c, the main function calls functions pthread_self
(provided by libpthread and introduced by the instruction -lpthread)
and dl_open (provided by libdl and introduced by the instruction
-ldl).

>>>When I build the libtool and configure with the following options
CPPFLAGS=-I/opt/libtool/include LDFLAGS=-L/opt/libtool/lib,
the ltdl.h and the lib can be found. (I think it will cause a runtime
error when functions in the lib dl are invoked to load DLL files)

But the configure complains that there's no pthread in later steps.

I guess cegcc has built both the dl lib and pthread libraries, since
both ltdl.h and pthread.h can be found in its source directories. But
the generated libraries are entitled other file names than the libdl.a
and libpthread.a.

>>>My question is where has the cegcc hidden those core functions (pthread, dll and so on)?