> checking for magic.h... no
> checking for zlib.h... yes
> checking for uncompress in -lz... yes
> checking for png.h... no
> checking for mad.h... no
> checking for id3tag.h... no
> checking for lame/lame.h... no
> checking for lame.h... no
>
> $ pkg_info -L lame | grep .h$
> /usr/local/include/lame/lame.h
>
> OpenBSD installs third-party packages into /usr/local/,
> but the configure script does not look there; it porbably
> only searches in /usr, because that's where linux distributions
> install their packages. (I'm not saying it should
> -- I will test the same with -I added to the CPPFLAGS,
> as the OpenBSD port of SoX does.)
Running ./configure with CPPFLAGS and LDFLAGS,
so that the headers and libraries are found,
as per ./configure --help:
LDFLAGS linker flags, e.g. -L<lib dir>
if you have libraries in a nonstandard directory <lib dir>
CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I<include dir>
if you have headers in a nonstandard directory <include dir>
I am looking at png as an example.
With plain ./configure , png.h (which is /usr/local/include/png.h)
is not found, as described above.
checking for png.h... no
With ./configure CPPFLAGS='-I/usr/local/include' the png.h header is found,
but the library is not, unsurprisingly. But:
$ ./configure CPPFLAGS='-I/usr/local/include'
[...]
checking for png.h... yes
checking for png_set_rows in -l101... no
I have no idea how the -l101 got there.
checking for mad.h... yes
checking for mad_stream_buffer in -l101... no
checking for id3tag.h... yes
checking for id3_file_open in -l101... no
checking for lame/lame.h... yes
checking for lame_init in -l101... no
checking for twolame.h... yes
checking for twolame_init in -l101... no
checking for gsm/gsm.h... no
checking for gsm.h... yes
checking for gsm_create in -l101... no
Apparently, all the external library functions
are searched for in 'lib101' now.
Adding LDFLAGS='-L/usr/local/lib' so that the actual libraries
are found result in the same:
$ ./configure CPPFLAGS='-I/usr/local/include' LDFLAGS='-L/usr/local/lib'
[...]
checking for png.h... yes
checking for png_set_rows in -l101... no
checking for mad.h... yes
checking for mad_stream_buffer in -l101... no
checking for id3tag.h... yes
checking for id3_file_open in -l101... no
checking for lame/lame.h... yes
checking for lame_init in -l101... no
checking for twolame.h... yes
checking for twolame_init in -l101... no
checking for gsm/gsm.h... no
checking for gsm.h... yes
checking for gsm_create in -l101... no
For some others, the check seems sensible:
checking for wavpack/wavpack.h... yes
checking for WavpackGetSampleRate in -lwavpack... no
But:
$ nm /usr/local/lib/libwavpack.so.0.3 | grep WavpackGetSampleRate
0000b8e0 T WavpackGetSampleRate
For some, the check is sane and the detection is correct:
checking for sndio.h... yes
checking for sio_open in -lsndio... yes
Then again:
checking for ao/ao.h... yes
checking for ao_play in -lao... no
$ nm /usr/local/lib/libao.so.5.0 | grep ao_play
000067c0 T ao_play
Sndfile too:
checking for sndfile.h... yes
checking for sf_open_virtual in -l101... no
Jan
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