MinGW + MSYS compile apr errors and possible solutions.

[Roberto Huelga]

I'm trying to test the log4cxx library following the information in this
wiki page:
http://wiki.apache.org/logging-log4cxx/MSWindowsBuildInstructions

when I run make in the apr folder, I'm getting this is the errors:

/bin/sh /home/kanzeon/src/apr/trunk/libtool --silent --mode=compile gcc
-O0 -s -mms-bitfields -march=i686 -DHAVE_CONFIG_H -D_LARGEFILE64_SOURCE
 -I/usr/local/include -I./include
-I/home/kanzeon/src/apr/trunk/include/arch/win32 -I./include/arch/unix
-I/home/kanzeon/src/apr/trunk/include/arch/unix
-I/home/kanzeon/src/apr/trunk/include  -o dso/win32/dso.lo -c
dso/win32/dso.c && touch dso/win32/dso.lo
In file included from
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_file_io.h:29,
                from dso/win32/dso.c:20:
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_misc.h:421:
error: syntax error before "LPPROCESSENTRY32W"
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_misc.h:421:
error: syntax error before "LPPROCESSENTRY32W"
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_misc.h:
In function `apr_winapi_Process32FirstW':
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_misc.h:421:
error: `hSnapshot' undeclared (first use in this function)
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_misc.h:421:
error: (Each undeclared identifier is reported only once
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_misc.h:421:
error: for each function it appears in.)
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_misc.h:421:
error: `lppe' undeclared (first use in this function)
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_misc.h:
At top level:
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_misc.h:430:
error: syntax error before "LPPROCESSENTRY32W"
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_misc.h:430:
error: syntax error before "LPPROCESSENTRY32W"
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_misc.h:
In function `apr_winapi_Process32NextW':
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_misc.h:430:
error: `hSnapshot' undeclared (first use in this function)
C:/msys/1.0/home/kanzeon/src/apr/trunk/include/arch/win32/apr_arch_misc.h:430:
error: `lppe' undeclared (first use in this function)
make[1]: *** [dso/win32/dso.lo] Error 1
make[1]: Leaving directory `/home/kanzeon/src/apr/trunk'
make: *** [all-recursive] Error 1

I solved the problems using the WINVER def and inserting the tlhelp32.h
include in the file include/arch/win32/apr_arch_misc.h
I'm using the following configure line:
$ ./configure CFLAGS="-O0 -s -mms-bitfields -march=i686 -DWINVER=0x0501"
CXXFLAGS="-O0 -s -mms-bitfields -march=i686 -DWINVER=0x0501"

using this configuration everything get compiled without error (only get
some warnings) and the make test only fail 4 of the 5 test of dso
Failed Tests           Total    Fail    Failed %
===================================================
testdso                    5       4     80.00%


I hope this info will be useful to someone.

-- 
http://marssong.blogspot.com