Albrecht Schlosser wrote:
> imacarthur wrote:
>> OK - I've pushed the change for #1949, as is. Testing feedback
>> welcomed. So far, it is "good" on this Mac and the 2 linux variants
>> I've tried.
>
> Tested okay for:
>
> - Linux with system png lib
> - Cygwin with --enable-cygwin and cygwin (system) png lib
> - Cygwin w/o --enable-cygwin with --enable-localpng
I'm sorry, but the last one doesn't work, I didn't see that first
because I only looked for the defined macros in config.h, and they were
okay.
With the old configure.in I get:
./configure --enable-localjpeg --enable-localpng --enable-localzlib
checking for gcc... gcc
[...]
checking for png_set_tRNS_to_alpha in -lpng... (cached) no
[...]
Configuration Summary
-------------------------------------------------------------------------
Directories: prefix=/usr/local
bindir=${exec_prefix}/bin
datadir=${datarootdir}
datarootdir=${prefix}/share
exec_prefix=${prefix}
includedir=${prefix}/include
libdir=${exec_prefix}/lib
mandir=${datarootdir}/man
Graphics: GDI
Image Libraries: JPEG=Builtin
PNG=Builtin
ZLIB=Builtin
[...]
This is okay: JPEG, PNG, and ZLIB are all "Builtin".
With the _new_ configure.in I get:
./configure --enable-localjpeg --enable-localpng --enable-localzlib
checking for gcc... gcc
[...]
checking for png_set_tRNS_to_alpha in -lpng... (cached) yes
[...]
Configuration Summary
-------------------------------------------------------------------------
Directories: prefix=/usr/local
bindir=${exec_prefix}/bin
datadir=${datarootdir}
datarootdir=${prefix}/share
exec_prefix=${prefix}
includedir=${prefix}/include
libdir=${exec_prefix}/lib
mandir=${datarootdir}/man
Graphics: GDI
Image Libraries: JPEG=Builtin
PNG=System
ZLIB=Builtin
This is wrong (PNG=System). This does not build the PNG library, and
compiling Fl_PNG_Image.cxx fails with...
Fl_PNG_Image.cxx:52:28: libpng/png.h: No such file or directory
...and lots of error messages after this.
The following patch fixes this for my cygwin build, but I don't know
what happens ... :-(
$ svn diff configure.in
Index: configure.in
===================================================================
--- configure.in (revision 6504)
+++ configure.in (working copy)
@@ -578,7 +578,7 @@
AC_ARG_ENABLE(localpng, [ --enable-localpng use local PNG
library, default=auto],
[if test x$enable_localpng = xyes; then
- ac_cv_lib_png_png_set_tRNS_to_alpha=yes
+ ac_cv_lib_png_png_set_tRNS_to_alpha=no
fi])
AC_CHECK_LIB(png,png_set_tRNS_to_alpha, [
@@ -587,7 +587,8 @@
IMAGELIBS="-lpng $IMAGELIBS"
AC_DEFINE(HAVE_LIBPNG)
AC_DEFINE(HAVE_PNG_GET_VALID)
- AC_DEFINE(HAVE_PNG_SET_TRNS_TO_ALPHA) AC_CHECK_HEADER(png.h,
AC_DEFINE(HAVE_PNG_H))],[
+ AC_DEFINE(HAVE_PNG_SET_TRNS_TO_ALPHA)
+ AC_CHECK_HEADER(png.h, AC_DEFINE(HAVE_PNG_H))],[
if test x$enable_localpng = xno; then
PNGINC=""
PNG=""
The first part is _necessary_ to fix the behavior, the second part
didn't change anything, but it _looks_ as if there has been a missing
newline, and I fixed (?) this as well.
Any ideas, what's happening?
Albrecht
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