Find out OS version in configure script
Hi, I´m wondering what is the recomended way to find out the OS version in my configure script? Do I have to check for library availability and then make a guess or is there some test program that I can call or some file with the version name? I´m trying to build my app using Chinook, Diablo and Fremantle. Therefore I need to introduce some #ifdef statements... Thanks! Conny ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
Re: Find out OS version in configure script
Cornelius Hald a écrit : Hi, I´m wondering what is the recomended way to find out the OS version in my configure script? Do I have to check for library availability and then make a guess or is there some test program that I can call or some file with the version name? I´m trying to build my app using Chinook, Diablo and Fremantle. Therefore I need to introduce some #ifdef statements... Thanks! Conny ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers Hi, I would be also interested to know how I can find out in the postinst script if I'm in Fremantle as maemo-select-menu-location is not available anymore ... I suppose I could test for the presence of maemo-select-menu-location ... Fred ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
Re: Find out OS version in configure script
On Wednesday 29 April 2009 11:02:52 Cornelius Hald wrote: I´m wondering what is the recomended way to find out the OS version in my configure script? Do I have to check for library availability and then make a guess or is there some test program that I can call or some file with the version name? The recommended (at least by me) way is to not use OS **names** at all -- names are unreliable (what would your code had done when Diablo was introduced if it had been relying on the name Chinook). The standard way to address these sorts of issues in configure scripts is not to try to work out the name or version but to look for features you need. As an example, here is how most of my GPE configure.ac scripts handle this today (not yet including Freemantle): ENABLE_HILDON=false AC_ARG_ENABLE(hildon, [ --enable-hildon Enable Hildon GUI], [ ENABLE_HILDON=true PKG_CHECK_MODULES(HILDON, hildon-1, [ AC_DEFINE(HILDON_VER, 2, [Version of hildon libraries]) DEP_MODULES=$DEP_MODULES hildon-fm-2 ], [ AC_DEFINE(HILDON_VER, 0, [Version of hildon libraries]) PKG_CHECK_MODULES(HILDON, hildon-lgpl hildon-libs) DEP_MODULES=$DEP_MODULES hildon-fm ]) DEP_MODULES=$DEP_MODULES libosso ], [ ENABLE_HILDON=false ]) AC_SUBST(ENABLE_HILDON) AM_CONDITIONAL(HILDON, test x$ENABLE_HILDON = xtrue) ... PKG_CHECK_MODULES(DEPS, $DEP_MODULES) I then use HILDON, HILDON_CFLAGS, HILDON_LIBS, DEPS_CFLAGS and DEPS_LIBS in my Makefile.am, for example in lines like: if HILDON DEPS_CFLAGS += -DIS_HILDON endif ... INCLUDES = $(DEPS_CFLAGS) $(HILDON_CFLAGS) \ $(SERVERDEPS_CFLAGS) -I$(top_srcdir)/gpe -I$(top_srcdir) \ -DPREFIX=\@pre...@\ -D_GNU_SOURCE -Wall \ -DPACKAGE_LOCALE_DIR=\@gpecalendar_locale...@\ \ -DDBUS_API_SUBJECT_TO_CHANGE ... gpe_calendar_LDADD = $(DEPS_LIBS) $(HILDON_LIBS) libwidgets.la ... The .c files make use of the IS_HILDON and the HILDON_VER macros to conditionalise code. I can send you full versions of these files by email if you want, or just check out the source package for something like gpe-calendar (where these examples came from). Graham ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
Re: Find out OS version in configure script
Hi Graham, On Wed, 2009-04-29 at 13:10 +0100, Graham Cobb wrote: On Wednesday 29 April 2009 11:02:52 Cornelius Hald wrote: I´m wondering what is the recomended way to find out the OS version in my configure script? Do I have to check for library availability and then make a guess or is there some test program that I can call or some file with the version name? The recommended (at least by me) way is to not use OS **names** at all -- names are unreliable (what would your code had done when Diablo was introduced if it had been relying on the name Chinook). The standard way to address these sorts of issues in configure scripts is not to try to work out the name or version but to look for features you need. thanks for the information. ATM I only need to know if the new app menu API is available. So I think I'll just check whether the function hildon_app_menu_new() is available or not. I'll also have a look at the sources of your GPE programs. Thanks again! Conny ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
Re: Find out OS version in configure script
Hi, that's imho what maemo-version is there for. I use it this way: PKG_CHECK_EXISTS(maemo-version, [ VERSION=`pkg-config --modversion maemo-version` AC_MSG_NOTICE([Configuring for Maemo $VERSION]) CFLAGS=$CFLAGS -DMAEMO_VERSION=\\\$VERSION\\\ MAJOR=`echo $VERSION | cut -b1 -` CFLAGS=$CFLAGS -DMAEMO_VERSION_MAJOR=$MAJOR ], [ AC_MSG_ERROR([maemo-version not found]) ]) And in my program i can then do things like #if MAEMO_VERSION_MAJOR == 5 do_something(); #endif Till Am Mittwoch 29 April 2009 schrieb Cornelius Hald: Hi, I´m wondering what is the recomended way to find out the OS version in my configure script? Do I have to check for library availability and then make a guess or is there some test program that I can call or some file with the version name? I´m trying to build my app using Chinook, Diablo and Fremantle. Therefore I need to introduce some #ifdef statements... Thanks! Conny ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
Re: Find out OS version in configure script
Hi Till, that's imho what maemo-version is there for. I use it this way: PKG_CHECK_EXISTS(maemo-version, [ VERSION=`pkg-config --modversion maemo-version` AC_MSG_NOTICE([Configuring for Maemo $VERSION]) CFLAGS=$CFLAGS -DMAEMO_VERSION=\\\$VERSION\\\ MAJOR=`echo $VERSION | cut -b1 -` CFLAGS=$CFLAGS -DMAEMO_VERSION_MAJOR=$MAJOR ], [ AC_MSG_ERROR([maemo-version not found]) ]) And in my program i can then do things like #if MAEMO_VERSION_MAJOR == 5 do_something(); #endif this is what I was looking for. I didn't know that a package called maemo-version exists. Thanks a lot for the information :) Just for reference, this is the solution with which I came up: PKG_CHECK_EXISTS([hildon-1 = 2.1.62], [AC_DEFINE([HILDON_HAS_APP_MENU], [1], [Does hildon app menu exist])]) Cheers! Conny ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
