Im trying to build libpng on Windows 10 to get win32 binaries but having an issue related, i supposed, to awk parsing files with CRLF line endings. I've tried to convert files with dos2unix command, but without success, result the same - on the make command I've getting next output:
sh-3.1$ make
rm -f pnglibconf.c pnglibconf.tf[45]
gawk -f ./scripts/options.awk out=pnglibconf.tf4 version=search\
./pngconf.h ./scripts/pnglibconf.dfa\
./pngusr.dfa 1>&2
gawk -f ./scripts/options.awk out=pnglibconf.tf5 pnglibconf.tf4 1>&2
options.awk: bad line (10): com
make: *** [pnglibconf.c] Error 1
Compiler is MinGW with MSYS v1.0 on WIndows 10 x86, libpng version is 1637. How to solve this issue?
Update: solved by downloading tar.gz archive, but having new issue
sh-3.1$ make make all-am make[1]: Entering directory `/c/Users/user/Downloads/libpng-1.6.37.tar/libpng-1.6.37' depbase=`echo contrib/tools/pngfix.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\ gcc -DHAVE_CONFIG_H -I. -g -O2 -MT contrib/tools/pngfix.o -MD -MP -MF $depbase.Tpo -c -o contrib/tools/pngfix.o contrib/tools/pngfix.c &&\ mv -f $depbase.Tpo $depbase.Po In file included from contrib/tools/../../png.h:330,
from contrib/tools/pngfix.c:44:
contrib/tools/../../pnglibconf.h:206:54: error: expected identifier or '(' before '-' token
#define PNG_TEXT_Z_DEFAULT_STRATEGY 0
^
In file included from contrib/tools/../../png.h:335,
from contrib/tools/pngfix.c:44:
contrib/tools/../../pngconf.h:524:9: error: unknown type name 'ptrdiff_t'
typedef ptrdiff_t png_ptrdiff_t;
^~~~~~~~~
make[1]: *** [contrib/tools/pngfix.o] Error 1 make[1]: Leaving directory `/c/Users/user/Downloads/libpng-1.6.37.tar/libpng-1.6.37' make: *** [all] Error 2
It has been experimentally verified that this problem does not occur on Linux.
Solved. Summary: use tar.gz or xz archive with unix LF, and edit pnglibconf.h generated during compilation so there is no line breaks.