dylib checks missing for many libs in configure

[kyngchaos@…]

No libraries are checked for the presence of a dylib (Mac OS X).  These ones fail if a static library is not 
present:

png
jpeg
gd
proj
pdf
Xpm

The check fails even if explicit dirs are set using --with options.  Other libraries skip the check for 
library files if a --with option is used to set the dir, but still may fail if the --with option doesn't specify 
a dir because they also don't check for dylibs:

freetype
tiff

these ones work since they are in /usr/lib (which is handled separately in configure) on OS X:

zlib
iconv

Others I haven't tried on OSX (mpatrol), or just don't exist on OSX (SDE).

[dmorissette]

Setting 4.10 release target milestone.

[hobu]

I have added .dylib checks for all of these libraries.  Please confirm.

[kyngchaos@…]

Oops, you left off the 'lib' subfolder from the png check:

test -f $PNG_DIR/lib/libpng.a -o -f $PNG_DIR/lib/libpng.so -o -f $PNG_DIR/lib/libpng.sl -o -f 
$PNG_DIR/libpng.dylib && PNG_LIBDIR="$PNG_DIR/lib"

Should be: $PNG_DIR/lib/libpng.dylib

One other thing, some of the checks list the various forms when they fail.  ie:

echo "$as_me:$LINENO: result: \"Could not find jpeglib.h or libjpeg.a/libjpeg.so in $JPEG_DIR.\"" >&5

For completeness, .dylib should be added to those, or they should be changed to a more generic 
'libwhatever could not be found'.

[hobu]

fixed

[dmorissette]

Assigned to Howard since you've taken care of this one already. Thanks.

[kyngchaos@…]

png check is working now.

[hobu]

I didn't go through and add notes for things like 

echo "$as_me:$LINENO: result: \"Could not find jpeglib.h or libjpeg.a/libjpeg.so
in $JPEG_DIR.\"" >&5  

I agree that they should probably be changed to something generic and should be
broken into *two* warnings.  It isn't specific enough as it currently is
anyway...which one is missing, the header or the lib?

[hobu]

William,

Are things behaving with this now?

Howard

[kyngchaos]

As far as checking dylibs, it's working. The warning messages that say .a/.so still need to be changed, but that's not a showstopper.