X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/9babd968efb0aacda1893a4d591a8b54f61df74e..62f1ee1cc7a5e16ca0cbfbee3c00cefab1892f87:/COMPILING?ds=sidebyside diff --git a/COMPILING b/COMPILING index 2dbff1fdf..1076c6366 100644 --- a/COMPILING +++ b/COMPILING @@ -9,12 +9,14 @@ To compile this you need a couple things g++ 2.8 works OK and newer egcs work well also. Nobody has tried it on other compilers :< You will need a properly working STL as well. - A C library with the usual POSIX functions and a BSD socket layer. - If you OS conforms to the Single Unix Spec then you are fine: + If your OS conforms to the Single Unix Spec then you are fine: http://www.opengroup.org/onlinepubs/7908799/index.html + - Refer to the Build-Depends information in debian/control for + additional requirements (some of which are Debian-specific) ** NOTICE ** The C++ global constructors do not link correctly when using non-shared -libaries. This is probably the correct behavior of the linker, but I have +libraries. This is probably the correct behavior of the linker, but I have not yet had time to devise a work around for it. The correct thing to do is add a reference to debSystem in apt-pkg/init.cc, assert(&debSystem == 0) would be fine for instance. @@ -25,24 +27,23 @@ I am not interested in making 'ultra portable code'. I will accept patches to make the code that already exists conform more to SUS or POSIX, but I don't really care if your not-SUS OS doesn't work. It is simply too much work to maintain patches for dysfunctional OSs. I highly suggest you -contact your vendor and express intrest in a conforming C library. +contact your vendor and express interest in a conforming C library. -That said, there are lots of finniky problems that must be delt with even +That said, there are lots of finicky problems that must be dealt with even between the supported OS's. Primarily the path I choose to take is to put a shim header file in build/include that transparently adds the required functionality. Patches to make autoconf detect these cases and generate the required shims are OK. Current shims: - * C99 integer types 'inttypes.h' * sys/statvfs.h to convert from BSD/old-glibc statfs to SUS statvfs * rfc2553 hostname resolution (methods/rfc*), shims to normal gethostbyname. - The more adventerous could steal the KAME IPv6 enabled resolvers for those + The more adventurous could steal the KAME IPv6 enabled resolvers for those OS's with IPv6 support but no rfc2553 (why?) * define _XOPEN_EXTENDED_SOURCE to bring in h_errno on HP-UX * socklen_t shim in netdb.h if the OS does not have socklen_t -The only completely non-shimed OS is Linux with glibc2.1, glibc2.0 requires +The only completely non-shimmed OS is Linux with glibc2.1, glibc2.0 requires the first three shims. Platform Notes @@ -75,7 +76,7 @@ OpenBSD HP-UX HP-UX nyquist B.10.20 C 9000/780 2016574337 32-user license - Evil OS, does not conform very well to SUS - 1) snprintf exists but is not prototyped, ignore spurios warnings + 1) snprintf exists but is not prototyped, ignore spurious warnings 2) No socklen_t 3) Requires -D_XOPEN_SOURCE_EXTENDED for h_errno configure should fix the last two (see above)