Ticket #1955 (closed defect: fixed)
libz conflict disable HDF4 support
|Reported by:||mloskot||Owned by:||mloskot|
Shortly, running configure with --with-libz=internal disables (or might disable) HDF4 support if there is external installation of the library in the system.
Here is the story in longer version:
- I use Mac OS X 10.4 with GCC 4.0.1.
- I have built and installed HDF4 libraries (with jpeg-b6 and szip dependencies)
First test is to configure with HDF4 only support:
./configure --with-hdf4 ... checking for deflateInit_ in -lz... yes using pre-installed libz ... checking for SDreaddata in -lmfhdf... yes checking for H5Fopen in -lhdf5... no ... LIBZ support: external ... HDF4 support: yes HDF5 support: no
Second test includes selection of internal libz version:
./configure --with-hdf4 --with-libz=internal ... using internal libz code. ... checking for SDreaddata in -lmfhdf... no checking for H5Fopen in -lhdf5... no ... LIBZ support: internal ... HDF4 support: no HDF5 support: no
The config.log file gives clear explanation what's the reason of disappearing HDF4 support:
configure:21236: checking for SDreaddata in -lmfhdf configure:21266: gcc -o conftest -g -O2 conftest.c -lmfhdf -ldf -ljpeg -lnetcdf -ldl >&5 /usr/bin/ld: Undefined symbols: _deflate _deflateEnd _deflateInit_ _inflate _inflateEnd _inflateInit_ collect2: ld returned 1 exit status
I believe this problem is not specific to Mac OS X but is probably on other Unix systems.