Build Apache APR 1.7 with Visual Studio (2017), IF_NAMESIZE undefined

Question

Trying to build apr 1.7 on Windows with Visual Studio, tried 2017 and 2013.

When building the project (Debug|x86) or compiling e.g. dso.c if get the following error message:

1>dso.c
1>c:\dev\log4cxx\apr\include\arch\win32\apr_arch_misc.h(503): error C2143: syntax error: missing ')' before '*'
1>c:\dev\log4cxx\apr\include\arch\win32\apr_arch_misc.h(503): error C2143: syntax error: missing '{' before '*'
1>c:\dev\log4cxx\apr\include\arch\win32\apr_arch_misc.h(503): error C2059: syntax error: ')'
1>c:\dev\log4cxx\apr\include\arch\win32\apr_arch_misc.h(503): error C2061: syntax error: identifier 'apr_winapi_pfn_if_indextoname'
1>c:\dev\log4cxx\apr\include\arch\win32\apr_arch_misc.h(503): error C2059: syntax error: ';'
1>c:\dev\log4cxx\apr\include\arch\win32\apr_arch_misc.h(503): error C2513: ' ': no variable declared before '='
1>c:\dev\log4cxx\apr\include\arch\win32\apr_arch_misc.h(503): error C2065: 'apr_winapi_pfn_if_indextoname': undeclared identifier
1>c:\dev\log4cxx\apr\include\arch\win32\apr_arch_misc.h(503): warning C4047: '=': 'int' differs in levels of indirection from 'int *(__cdecl *)(NET_IFINDEX,PCHAR)'
1>c:\dev\log4cxx\apr\include\arch\win32\apr_arch_misc.h(503): error C2146: syntax error: missing ';' before identifier 'apr_load_dll_func'
1>c:\dev\log4cxx\apr\include\arch\win32\apr_arch_misc.h(503): error C2100: illegal indirection
1>c:\dev\log4cxx\apr\include\arch\win32\apr_arch_misc.h(503): error C2064: term does not evaluate to a function taking 1207 arguments
1>c:\dev\log4cxx\apr\include\arch\win32\apr_arch_misc.h(503): warning C4033: 'apr_winapi_if_indextoname' must return a value

I have succesfully build version 1.65 (after apply the hint from http://letcoderock.blogspot.com/2017/09/build-log4cxx-trunk-on-windows-by.html or Apache Cross Compilation Error ./gen_test_char: cannot execute binary file)

Comparing apr_arch_misc.h of the two version, i have noticed DLL_IPHLPAPI was new to the enum apr_dlltoken_e and Intelisense was complaining about

APR_DECLARE_LATE_DLL_FUNC(DLL_IPHLPAPI, PCHAR, NETIOAPI_API_, if_indextoname, 0, (
    NET_IFINDEX InterfaceIndex,
    PCHAR       InterfaceName),
    (InterfaceIndex, InterfaceName));

with "expecting a ')'". If have changed NETIOAPI_API_ to WINAPI. Do not know if this is correct but the file could now be compiled (after running the above trick with gen_test_char.exe).

But after that I ran into the next Problem:

1>sockaddr.c
1>network_io\unix\sockaddr.c(144): error C2065: 'IF_NAMESIZE': undeclared identifier
1>network_io\unix\sockaddr.c(144): error C2057: expected constant expression
1>network_io\unix\sockaddr.c(144): error C2466: cannot allocate an array of constant size 0
1>network_io\unix\sockaddr.c(144): error C2133: 'scbuf': unknown size
1>network_io\unix\sockaddr.c(1274): error C2065: 'IF_NAMESIZE': undeclared identifier

I have succesfully build apr with gcc in linux/cygwin. I have looked into the the preprocessor substitutions for IF_NAMESIZE and here it is replaced by 44. But I can not find the definiton or where this is set.

Does anyone have an idea how to fix this? And is the above change to WINAPI correct?

Answer 1

Just use cmake to build the Visual Studio Solution:

With

cmake -G "Visual Studio 15 2017" -A x64

the .sln ist properly set up and building the solution works with no errors. Even gen_test_char.exe is build.

Maybe the apr project should make the cmake building instructions a little bit more prominent on their site.