Hi folks,
I've attached a patch against VIM 7.1 that enables cross-compiling support in
configure.
So far I've tested it with cross-compiling to two i586 targets (one with glibc
2.5 and another one with uClibc 0.9.29, both using GCC 4.1.2 and ncurses
5.6).
Since we're cross-compiling VIM 6.4 also for PowerPC and XScale and that works
like a charm for years now I assume that cross-compiling VIM 7.1 to those
platforms will works as well (I'm cross-compiling a lot and there's no reason
why it should fail).
Anyway, the trick is to allow the user to provide the answers for all the
tests configure can't do because it would need to run a test program. So I've
enhanced all these tests with a wrapper (AC_CACHE_CHECK) that checks whether
a corresponding cache-variable has been set. If the cache-variable is set
then that values is used, if not the test is performed. If the test notices
that cross-compiling is wanted then the error message now tells which
cache-variable to override.
If you want the patch to be edited so it can be included in VIM please tell
me.
Bye,
Marc
Here's an example of how configure would be called (yes,
this is typical for cross-compiling for autoconf):
vim_cv_toupper_broken=no \
vim_cv_terminfo=yes \
vim_cv_tty_group=world \
vim_cv_getcwd_broken=no \
vim_cv_stat_ignores_slash=yes \
vim_cv_memmove_handles_overlap=yes \
ac_cv_sizeof_int=4 \
./configure --with-tlib=ncurses ...
--
Marc Haisenko
Comdasys AG
Rüdesheimer Straße 7
D-80686 München
Tel: +49 (0)89 - 548 433 321
e-mail: [EMAIL PROTECTED]
http://www.comdasys.com
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diff -ur vim71.orig/src/configure.in vim71/src/configure.in
--- vim71.orig/src/configure.in 2007-05-12 11:19:27.000000000 +0200
+++ vim71/src/configure.in 2007-09-19 11:18:45.000000000 +0200
@@ -47,13 +47,6 @@
fi
fi
-dnl If configure thinks we are cross compiling, there is probably something
-dnl wrong with the CC or CFLAGS settings, give an understandable error message
-if test "$cross_compiling" = yes; then
- AC_MSG_ERROR([cannot compile a simple program, check CC and CFLAGS
- (cross compiling doesn't work)])
-fi
-
dnl gcc-cpp has the wonderful -MM option to produce nicer dependencies.
dnl But gcc 3.1 changed the meaning! See near the end.
test "$GCC" = yes && CPP_MM=M; AC_SUBST(CPP_MM)
@@ -1986,11 +1979,24 @@
dnl Checks for libraries and include files.
-AC_MSG_CHECKING(quality of toupper)
-AC_TRY_RUN([#include <ctype.h>
-main() { exit(toupper('A') == 'A' && tolower('z') == 'z'); }],
- AC_DEFINE(BROKEN_TOUPPER) AC_MSG_RESULT(bad),
- AC_MSG_RESULT(good), AC_MSG_ERROR(failed to compile test program))
+AC_CACHE_CHECK([toupper is broken],[vim_cv_toupper_broken],
+ [
+ AC_RUN_IFELSE([
+#include <ctype.h>
+main() { exit(toupper('A') == 'A' && tolower('z') == 'z'); }
+ ],[
+ vim_cv_toupper_broken=yes
+ AC_MSG_RESULT(yes)
+ ],[
+ vim_cv_toupper_broken=no
+ AC_MSG_RESULT(no)
+ ],[
+ AC_MSG_ERROR(cross-compiling: please set 'vim_cv_toupper_broken')
+ ])])
+
+if test "x$vim_cv_toupper_broken" = "xyes" ; then
+ AC_DEFINE(BROKEN_TOUPPER)
+fi
AC_MSG_CHECKING(whether __DATE__ and __TIME__ work)
AC_TRY_COMPILE(, [printf("(" __DATE__ " " __TIME__ ")");],
@@ -2202,28 +2208,52 @@
Or specify the name of the library with --with-tlib.]))
fi
-AC_MSG_CHECKING(whether we talk terminfo)
-AC_TRY_RUN([
+AC_CACHE_CHECK([whether we talk terminfo], [vim_cv_terminfo],
+ [
+ AC_RUN_IFELSE([
#ifdef HAVE_TERMCAP_H
# include <termcap.h>
#endif
main()
-{char *s; s=(char *)tgoto("%p1%d", 0, 1); exit(!strcmp(s==0 ? "" : s, "1")); }],
- AC_MSG_RESULT([no -- we are in termcap land]),
- AC_MSG_RESULT([yes -- terminfo spoken here]); AC_DEFINE(TERMINFO),
- AC_MSG_ERROR(failed to compile test program.))
+{char *s; s=(char *)tgoto("%p1%d", 0, 1); exit(!strcmp(s==0 ? "" : s, "1")); }
+ ],[
+ vim_cv_terminfo=no
+ AC_MSG_RESULT([no -- we are in termcap land])
+ ],[
+ vim_cv_terminfo=yes
+ AC_MSG_RESULT([yes -- terminfo spoken here])
+ ],[
+ AC_MSG_ERROR(cross-compiling: please set 'vim_cv_terminfo')
+ ])
+ ])
+
+if test "x$vim_cv_terminfo" = "xyes" ; then
+ AC_DEFINE(TERMINFO)
+fi
if test "x$olibs" != "x$LIBS"; then
- AC_MSG_CHECKING(what tgetent() returns for an unknown terminal)
- AC_TRY_RUN([
+ AC_CACHE_CHECK([what tgetent() returns for an unknown terminal], [vim_cv_tgent],
+ [
+ AC_RUN_IFELSE([
#ifdef HAVE_TERMCAP_H
# include <termcap.h>
#endif
main()
-{char s[10000]; int res = tgetent(s, "thisterminaldoesnotexist"); exit(res != 0); }],
- AC_MSG_RESULT(zero); AC_DEFINE(TGETENT_ZERO_ERR, 0),
- AC_MSG_RESULT(non-zero),
- AC_MSG_ERROR(failed to compile test program.))
+{char s[10000]; int res = tgetent(s, "thisterminaldoesnotexist"); exit(res != 0); }
+ ],[
+ vim_cv_tgent=zero
+ AC_MSG_RESULT(zero)
+ ],[
+ vim_cv_tgent=non-zero
+ AC_MSG_RESULT(non-zero)
+ ],[
+ AC_MSG_ERROR(failed to compile test program.)
+ ])
+ ])
+
+ if test "x$vim_cv_tgent" = "xzero" ; then
+ AC_DEFINE(TGETENT_ZERO_ERR, 0)
+ fi
fi
AC_MSG_CHECKING(whether termcap.h contains ospeed)
@@ -2333,9 +2363,10 @@
dnl **** pty mode/group handling ****
dnl
dnl support provided by Luke Mewburn <[EMAIL PROTECTED]>, 931222
-AC_MSG_CHECKING(default tty permissions/group)
rm -f conftest_grp
-AC_TRY_RUN([
+AC_CACHE_CHECK([default tty permissions/group], [vim_cv_tty_group],
+ [
+ AC_RUN_IFELSE([
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
@@ -2363,20 +2394,35 @@
fclose(fp);
exit(0);
}
-],[
- if test -f conftest_grp; then
- ptygrp=`cat conftest_grp`
- AC_MSG_RESULT([pty mode: 0620, group: $ptygrp])
- AC_DEFINE(PTYMODE, 0620)
- AC_DEFINE_UNQUOTED(PTYGROUP,$ptygrp)
- else
+ ],[
+ if test -f conftest_grp; then
+ vim_cv_tty_group=`cat conftest_grp`
+ if test "x$vim_cv_tty_mode" = "x" ; then
+ vim_cv_tty_mode=0620
+ fi
+ AC_MSG_RESULT([pty mode: $vim_cv_tty_mode, group: $vim_cv_tty_group])
+ else
+ vim_cv_tty_group=world
AC_MSG_RESULT([ptys are world accessable])
- fi
-],
- AC_MSG_RESULT([can't determine - assume ptys are world accessable]),
- AC_MSG_ERROR(failed to compile test program))
+ fi
+ ],[
+ vim_cv_tty_group=world
+ AC_MSG_RESULT([can't determine - assume ptys are world accessable])
+ ],[
+ AC_MSG_ERROR(cross-compiling: please set 'vim_cv_tty_group' and 'vim_cv_tty_mode')
+ ])
+ ])
rm -f conftest_grp
+if test "x$vim_cv_tty_group" != "xworld" ; then
+ AC_DEFINE_UNQUOTED(PTYGROUP,$vim_cv_tty_group)
+ if test "x$vim_cv_tty_mode" = "x" ; then
+ AC_MSG_ERROR([It seems you're cross compiling and have 'vim_cv_tty_group' set, please also set the environment variable 'vim_cv_tty_mode' to the correct mode (propably 0620)])
+ else
+ AC_DEFINE(PTYMODE, 0620)
+ fi
+fi
+
dnl Checks for library functions. ===================================
AC_TYPE_SIGNAL
@@ -2404,8 +2450,9 @@
dnl tricky stuff: try to find out if getcwd() is implemented with
dnl system("sh -c pwd")
-AC_MSG_CHECKING(getcwd implementation)
-AC_TRY_RUN([
+AC_CACHE_CHECK([getcwd implementation is broken], [vim_cv_getcwd_broken],
+ [
+ AC_RUN_IFELSE([
char *dagger[] = { "IFS=pwd", 0 };
main()
{
@@ -2413,11 +2460,21 @@
extern char **environ;
environ = dagger;
return getcwd(buffer, 500) ? 0 : 1;
-}],
- AC_MSG_RESULT(it is usable),
- AC_MSG_RESULT(it stinks)
- AC_DEFINE(BAD_GETCWD),
- AC_MSG_ERROR(failed to compile test program))
+}
+ ],[
+ vim_cv_getcwd_broken=no
+ AC_MSG_RESULT(no)
+ ],[
+ vim_cv_getcwd_broken=yes
+ AC_MSG_RESULT(yes)
+ ],[
+ AC_MSG_ERROR(cross-compiling: please set 'vim_cv_getcwd_broken')
+ ])
+ ])
+
+if test "x$vim_cv_getcwd_broken" = "xyes" ; then
+ AC_DEFINE(BAD_GETCWD)
+fi
dnl Check for functions in one big call, to reduce the size of configure
AC_CHECK_FUNCS(bcmp fchdir fchown fseeko fsync ftello getcwd getpseudotty \
@@ -2441,14 +2498,27 @@
AC_MSG_RESULT(yes); AC_DEFINE(HAVE_ST_BLKSIZE),
AC_MSG_RESULT(no))
-AC_MSG_CHECKING(whether stat() ignores a trailing slash)
-AC_TRY_RUN(
+AC_CACHE_CHECK([whether stat() ignores a trailing slash], [vim_cv_stat_ignores_slash],
+ [
+ AC_RUN_IFELSE(
[#include <sys/types.h>
#include <sys/stat.h>
-main() {struct stat st; exit(stat("configure/", &st) != 0); }],
- AC_MSG_RESULT(yes); AC_DEFINE(STAT_IGNORES_SLASH),
- AC_MSG_RESULT(no), AC_MSG_ERROR(failed to compile test program))
+main() {struct stat st; exit(stat("configure/", &st) != 0); }
+ ],[
+ vim_cv_stat_ignores_slash=yes
+ AC_MSG_RESULT(yes)
+ ],[
+ vim_cv_stat_ignores_slash=no
+ AC_MSG_RESULT(no)
+ ],[
+ AC_MSG_ERROR(cross-compiling: please set 'vim_cv_stat_ignores_slash')
+ ])
+ ])
+if test "x$vim_cv_stat_ignores_slash" = "xyes" ; then
+ AC_DEFINE(STAT_IGNORES_SLASH)
+fi
+
dnl Link with iconv for charset translation, if not found without library.
dnl check for iconv() requires including iconv.h
dnl Add "-liconv" when possible; Solaris has iconv but use GNU iconv when it
@@ -2641,7 +2711,10 @@
AC_MSG_RESULT($ac_cv_sizeof_int)
AC_DEFINE_UNQUOTED(SIZEOF_INT, $ac_cv_sizeof_int)
-AC_MSG_CHECKING(whether memmove/bcopy/memcpy handle overlaps)
+
+dnl Check for memmove() before bcopy(), makes memmove() be used when both are
+dnl present, fixes problem with incompatibility between Solaris 2.4 and 2.5.
+
[bcopy_test_prog='
main() {
char buf[10];
@@ -2656,18 +2729,60 @@
exit(0); /* libc version works properly. */
}']
-dnl Check for memmove() before bcopy(), makes memmove() be used when both are
-dnl present, fixes problem with incompatibility between Solaris 2.4 and 2.5.
+AC_CACHE_CHECK([whether memmove handles overlaps],[vim_cv_memmove_handles_overlap],
+ [
+ AC_RUN_IFELSE([#define mch_memmove(s,d,l) memmove(d,s,l) $bcopy_test_prog],
+ [
+ vim_cv_memmove_handles_overlap=yes
+ AC_MSG_RESULT(yes)
+ ],[
+ vim_cv_memmove_handles_overlap=no
+ AC_MSG_RESULT(no)
+ ],[
+ AC_MSG_ERROR(cross-compiling: please set 'vim_cv_memmove_handles_overlap')
+ ])
+ ])
+
+if test "x$vim_cv_memmove_handles_overlap" = "xyes" ; then
+ AC_DEFINE(USEMEMMOVE)
+else
+ AC_CACHE_CHECK([whether bcopy handles overlaps],[vim_cv_bcopy_handles_overlap],
+ [
+ AC_RUN_IFELSE([#define mch_bcopy(s,d,l) bcopy(d,s,l) $bcopy_test_prog],
+ [
+ vim_cv_bcopy_handles_overlap=yes
+ AC_MSG_RESULT(yes)
+ ],[
+ vim_cv_bcopy_handles_overlap=no
+ AC_MSG_RESULT(no)
+ ],[
+ AC_MSG_ERROR(cross-compiling: please set 'vim_cv_bcopy_handles_overlap')
+ ])
+ ])
+
+ if test "x$vim_cv_bcopy_handles_overlap" = "xyes" ; then
+ AC_DEFINE(USEBCOPY)
+ else
+ AC_CACHE_CHECK([whether memcpy handles overlaps],[vim_cv_memcpy_handles_overlap],
+ [
+ AC_RUN_IFELSE([#define mch_memcpy(s,d,l) memcpy(d,s,l) $bcopy_test_prog],
+ [
+ vim_cv_memcpy_handles_overlap=yes
+ AC_MSG_RESULT(yes)
+ ],[
+ vim_cv_memcpy_handles_overlap=no
+ AC_MSG_RESULT(no)
+ ],[
+ AC_MSG_ERROR(cross-compiling: please set 'vim_cv_memcpy_handles_overlap')
+ ])
+ ])
+
+ if test "x$vim_cv_memcpy_handles_overlap" = "xyes" ; then
+ AC_DEFINE(USEMEMCPY)
+ fi
+ fi
+fi
-AC_TRY_RUN([#define mch_memmove(s,d,l) memmove(d,s,l) $bcopy_test_prog],
- AC_DEFINE(USEMEMMOVE) AC_MSG_RESULT(memmove does),
- AC_TRY_RUN([#define mch_memmove(s,d,l) bcopy(d,s,l) $bcopy_test_prog],
- AC_DEFINE(USEBCOPY) AC_MSG_RESULT(bcopy does),
- AC_TRY_RUN([#define mch_memmove(s,d,l) memcpy(d,s,l) $bcopy_test_prog],
- AC_DEFINE(USEMEMCPY) AC_MSG_RESULT(memcpy does), AC_MSG_RESULT(no),
- AC_MSG_ERROR(failed to compile test program)),
- AC_MSG_ERROR(failed to compile test program)),
- AC_MSG_ERROR(failed to compile test program))
dnl Check for multibyte locale functions
dnl Find out if _Xsetlocale() is supported by libX11.
