building the library for windows

[abdelrahman1215]

I ran configure with the --prefix=/mingw flag and then when i ran make i got this linker error :

libtool: link: gcc -shared  .libs/libconfuse_la-confuse.o   -lintl  -g -O2   -o .libs/libconfuse-2.dll -Wl,--enable-auto-image-base -Xlinker --out-implib -Xlinker .libs/libconfuse.dll.a
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: .libs/libconfuse_la-confuse.o: in function cfg_free:
C:/Users/abder/Downloads/confuse-3.3/src/confuse.c:1992: undefined reference to cfg_yylex_destroy
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: .libs/libconfuse_la-confuse.o: in function cfg_init_defaults:
C:/Users/abder/Downloads/confuse-3.3/src/confuse.c:792: undefined reference to fmemopen
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Users/abder/Downloads/confuse-3.3/src/confuse.c:801: undefined reference to cfg_scan_fp_begin
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Users/abder/Downloads/confuse-3.3/src/confuse.c:808: undefined reference to cfg_scan_fp_end
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: .libs/libconfuse_la-confuse.o: in function cfg_parse_internal:
C:/Users/abder/Downloads/confuse-3.3/src/confuse.c:1287: undefined reference to cfg_yylex
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: .libs/libconfuse_la-confuse.o: in function cfg_addopt:
C:/Users/abder/Downloads/confuse-3.3/src/confuse.c:627: undefined reference to reallocarray
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: .libs/libconfuse_la-confuse.o: in function cfg_parse_fp:
C:/Users/abder/Downloads/confuse-3.3/src/confuse.c:1677: undefined reference to cfg_scan_fp_begin
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:/Users/abder/Downloads/confuse-3.3/src/confuse.c:1679: undefined reference to cfg_scan_fp_end
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: .libs/libconfuse_la-confuse.o: in function cfg_parse_buf:
C:/Users/abder/Downloads/confuse-3.3/src/confuse.c:1798: undefined reference to fmemopen
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: .libs/libconfuse_la-confuse.o: in function cfg_include:
C:/Users/abder/Downloads/confuse-3.3/src/confuse.c:2011: undefined reference to cfg_lexer_include
collect2.exe: error: ld returned 1 exit status
make[2]: *** [Makefile:452: libconfuse.la] Error 1
make[2]: Leaving directory /c/Users/abder/Downloads/confuse-3.3/src
make[1]: *** [Makefile:520: all-recursive] Error 1
make[1]: Leaving directory /c/Users/abder/Downloads/confuse-3.3
make: *** [Makefile:406: all] Error 2

[troglobit]

There's a windows/mingw/README.TXT did you see that?

[abdelrahman1215]

yes and i followed the instructions but when i tried to debug a simple program to test it gdb kept exiting and when i ran it i got this error :  and when i tried to build libconfuse-2.dll i got a linker error

[abdelrahman1215]

I finally solved the proplem
so this is what i had to do if any one else encounters the same proplem :

1. I moved the definition of HAVE_WINDOWS_H from config.h to fmemopen.c.
2. I included reallocarray.c in confuse.c.

[troglobit]

OK, but none of that should be necessary:

• config.h should be included in fmemopen.c when HAVE_CONFIG_H is set on the command-line, which is done on all other build targets
• reallocarray.c is built-in to libconfuse for systems where the configure script cannot find reallocarray() in the libc

Exactly how did you autogen.sh + configure + make libconfuse to get to this state? And what version of libconfuse are you using, or are you building directly from the latest master branch on GitHub?

[abdelrahman1215]

I downloaded the zip file from the releases page yesterday so i think it is the latest release and i configured and built it using
mingw64 bash i tried to build it multiple times but here is what i did the last time

1. I decompressed the files agian in case it was corrrupted
2. I ran configure with no arguments
3. I ran make to build the dll

when i opened fmemopen.c to see what is the proplem config.h was included and it had HAVE_WINDOWS_H set to 1 but for some reason all the definitions of fmemopen where dark which means that it is not activated due to preprocessors so i moved HAVE_WINDOWS_H from config.h to fmemopen and when i ran make the only error i got was a linker error saying that it couldn't find the definition of realloc_array so i included realloc_array.c in confuse.c and I finally was able to build the dll

[troglobit]

Thanks for detailing your answer. We'll have a look at it later to see if we can figure out what's wrong.