Re: [Gretl-users] undefined reference when trying to compile
$ nm /usr/local/lib/libgretl-1.0.so.16.0.0 | grep libgretl_init
0000000000146040 T libgretl_init
$ cc -vUsing built-in specs.
COLLECT_GCC=cc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
4.8.4-2ubuntu1~14.04.1' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes
--enable-gnu-unique-object --disable-libmudflap --enable-plugin --with-system-zlib
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --with-tune=generic --enable-checking=release
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.1)
$ ld -VGNU ld (GNU Binutils for Ubuntu) 2.24
Supported emulations:
elf_x86_64
elf32_x86_64
elf_i386
i386linux
elf_l1om
elf_k1om
i386pep
i386pe
On Sunday, February 14, 2016 11:12 PM, Allin Cottrell <cottrell(a)wfu.edu> wrote:
On Mon, 15 Feb 2016, Salman Khan wrote:
/usr/local/lib/libgretl-1.0.so exists and points
to libgretl-1.0.so.16.0.0 in the same directory.
Ran sudo ldconfig
In /etc/ld.so.conf.d/libc.conf I already see /usr/local/lib.
Very strange, since install seemed to go through fine.
What does
nm /usr/local/lib/libgretl-1.0.so.16.0.0 | grep libgretl_init
say? You should see something resembling
00000000001479b0 T libgretl_init
Possibly also relevant, what about "cc -v" and "ld -V"?
Allin Cottrell
On Sunday, February 14, 2016 8:17 PM, Allin Cottrell
<cottrell(a)wfu.edu> wrote:
On Mon, 15 Feb 2016, Salman Khan wrote:
> Hmmm... I cd'ed into the extras folder and tried compiling the
> three examples there with the default makefile.I still get errors:
>
> cc -g -O2 -Wall -I/usr/local/include -I/usr/include/libxml2
> -I/usr/include/glib-2.0
> -I/usr/lib/x86_64-linux-gnu/glib-2.0/include
> -DPREFIX=\"/usr/local\" -fopenmp -L/usr/local/lib -lgretl-1.0 -lm
> -lxml2 -lfftw3 -lglib-2.0 simple_client.c -o simple_client
> /tmp/ccUP9gBA.o: In function `main':
> Downloads/gretl-2016a/extra/simple_client.c:52: undefined
> reference to `libgretl_init'
Does /usr/local/lib/libgretl-1.0.so actually exist, and point to an
valid library file such as libgretl-1.0.so.16.0.0?
If not, the installation was not successful; but if so, you might
need to tell the linker to update its cache:
sudo ldconfig
and/or if /usr/local/lib is not a directory known to the linker you
may have to add an entry for it under /etc/ld.so.conf.d.
Allin Cottrell
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