Building from source -- zlib/binascii problems 2.5.2/2.6.1
I am trying to build Python from source on a RHEL system where I do not have root access. There are two modules that I am having trouble with: zlib & binascii. zlib -- This seems like a make configuration issue. I have noticed that 'gcc -v' returns '--with-system-zlib': $ gcc -v Using built-in specs. Target: x86_64-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man -- infodir=/usr/share/info --enable-shared --enable-threads=posix -- enable-checking=release --with-system-zlib --enable-__cxa_atexit -- disable-libunwind-exceptions --enable-libgcj-multifile --enable- languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk -- disable-dssi --enable-plugin --with-java-home=/usr/lib/jvm/java-1.4.2- gcj-1.4.2.0/jre --with-cpu=generic --host=x86_64-redhat-linux Thread model: posix gcc version 4.1.2 20071124 (Red Hat 4.1.2-42) and then when I run 'make' I see: building 'zlib' extension gcc -pthread -fPIC -fno-strict-aliasing -DNDEBUG -g -fwrapv -O3 -Wall - Wstrict-prototypes -I. -I/location/of/Python-2.5.2/./Include -I. - IInclude -I./Include -I/usr/local/include -I/location/of/Python-2.5.2/ Include -I/location/of/Python-2.5.2 -c /location/of/Python-2.5.2/ Modules/zlibmodule.c -o build/temp.linux-x86_64-2.5/location/of/ Python-2.5.2/Modules/zlibmodule.o gcc -pthread -shared build/temp.linux-x86_64-2.5/location/of/ Python-2.5.2/Modules/zlibmodule.o -L/usr/local/lib -lz -o build/ lib.linux-x86_64-2.5/zlib.so /usr/bin/ld: skipping incompatible /usr/lib/libz.so when searching for -lz /usr/bin/ld: skipping incompatible /usr/lib/libz.a when searching for - lz /usr/bin/ld: cannot find -lz collect2: ld returned 1 exit status It seems as though I need to force the build process to use the zlib that comes with python source. binascii -- I have no idea what binascii requires in order to compile, so I am clueless. It properly compiles with 2.5.2, but fails to build in 2.6.1. I am OK using 2.5.2 if I could get zlib to work. Thanks, Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Building from source -- zlib/binascii problems 2.5.2/2.6.1
On Dec 14, 4:54 pm, "Martin v. Löwis" wrote: > > Target: x86_64-redhat-linux > > gcc -pthread -shared build/temp.linux-x86_64-2.5/location/of/ > > Python-2.5.2/Modules/zlibmodule.o -L/usr/local/lib -lz -o build/ > > lib.linux-x86_64-2.5/zlib.so > > /usr/bin/ld: skipping incompatible /usr/lib/libz.so when searching for > > -lz > > Do > > file /usr/lib/libz.so > > It might be a 32-bit library, in which case you can check whether > /usr/lib64 has a 64-bit library. I'm puzzled why it only > happens for -lz; perhaps you are better of compiling with a 32-bit > compiler. > > Regards, > Martin $ file /usr/lib/libz.s* /usr/lib/libz.so: symbolic link to `libz.so.1.2.3' /usr/lib/libz.so.1: symbolic link to `libz.so.1.2.3' /usr/lib/libz.so.1.2.3: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), stripped -- http://mail.python.org/mailman/listinfo/python-list
Re: Building from source -- zlib/binascii problems 2.5.2/2.6.1
On Dec 14, 5:03 pm, "peter s." wrote: > On Dec 14, 4:54 pm, "Martin v. Löwis" wrote: > > > > > > Target: x86_64-redhat-linux > > > gcc -pthread -shared build/temp.linux-x86_64-2.5/location/of/ > > > Python-2.5.2/Modules/zlibmodule.o -L/usr/local/lib -lz -o build/ > > > lib.linux-x86_64-2.5/zlib.so > > > /usr/bin/ld: skipping incompatible /usr/lib/libz.so when searching for > > > -lz > > > Do > > > file /usr/lib/libz.so > > > It might be a 32-bit library, in which case you can check whether > > /usr/lib64 has a 64-bit library. I'm puzzled why it only > > happens for -lz; perhaps you are better of compiling with a 32-bit > > compiler. > > > Regards, > > Martin > > $ file /usr/lib/libz.s* > /usr/lib/libz.so: symbolic link to `libz.so.1.2.3' > /usr/lib/libz.so.1: symbolic link to `libz.so.1.2.3' > /usr/lib/libz.so.1.2.3: ELF 32-bit LSB shared object, Intel 80386, > version 1 (SYSV), stripped I meant to also add $ file /usr/lib64/libz.s* /usr/lib64/libz.so.1: symbolic link to `libz.so.1.2.3' /usr/lib64/libz.so.1.2.3: ELF 64-bit LSB shared object, AMD x86-64, version 1 (SYSV), stripped So.. it seems as though I need to get it to point to the 64 bit version (or compile the zlib that comes with Python source). I'm not sure how to override that. -- http://mail.python.org/mailman/listinfo/python-list
Re: Building from source -- zlib/binascii problems 2.5.2/2.6.1
On Dec 14, 5:20 pm, "Martin v. Löwis" wrote: > > So.. it seems as though I need to get it to point to the 64 bit > > version (or compile the zlib that comes with Python source). I'm not > > sure how to override that. > > The easiest solution would be to invoke the linker line manually, > and replace -lz with the absolute path to the right library. > > Regards, > Martin Thanks for you help thus far, though I am still stuck. I have tried a number of things with no success. Modifying the actual command that builds the zlibmodule to link to other sources produces different errors, such as "build/lib.linux-x86_64-2.5/zlib.so: undefined symbol: inflateEnd". Will update this thread if I find a solution. -- http://mail.python.org/mailman/listinfo/python-list
