The gnulib configure machinery doesn't take into account cross-builds.
I ran into this while doing a cross-build of GDB. It broke badly on a
build=X86_64-linux, host=i386-netbsdelf cross-build, because Linux attempted to
execute the generated conftest image (a NetBSD image). That's wrong of course,
but worse yet, it got into an infinite loop, apparently the emulation is buggy.
So my build got stuck.
The specific issue is in the "locale" checks in gnulib. The patch below cures
it.
paul
diff --git a/gdb/gnulib/import/m4/locale-fr.m4
b/gdb/gnulib/import/m4/locale-fr.m4
index 92ff552..fdd7c39 100644
--- a/gdb/gnulib/import/m4/locale-fr.m4
+++ b/gdb/gnulib/import/m4/locale-fr.m4
@@ -73,8 +73,8 @@ int main () {
}
changequote([,])dnl
])])
- if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
- case "$host_os" in
+ AC_RUN_IFELSE([test -s conftest$ac_exeext],
+ [case "$host_os" in
# Handle native Windows specially, because there setlocale() interprets
# "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
# "fr" or "fra" as "French" or "French_France.1252",
@@ -123,9 +123,7 @@ changequote([,])dnl
fi
fi
;;
- esac
- fi
- rm -fr conftest*
+ esac],[gt_cv_locale_fr=none],[gt_cv_locale_fr=none])
])
LOCALE_FR=$gt_cv_locale_fr
AC_SUBST([LOCALE_FR])
@@ -201,8 +199,8 @@ int main () {
}
changequote([,])dnl
])])
- if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
- case "$host_os" in
+ AC_RUN_IFELSE([test -s conftest$ac_exeext],
+ [case "$host_os" in
# Handle native Windows specially, because there setlocale() interprets
# "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
# "fr" or "fra" as "French" or "French_France.1252",
@@ -241,9 +239,7 @@ changequote([,])dnl
fi
fi
;;
- esac
- fi
- rm -fr conftest*
+ esac],[gt_cv_locale_fr_utf8=none],[gt_cv_locale_fr_utf8=none])
])
LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8
AC_SUBST([LOCALE_FR_UTF8])
diff --git a/gdb/gnulib/import/m4/locale-ja.m4
b/gdb/gnulib/import/m4/locale-ja.m4
index a3abef8..c8f418d 100644
--- a/gdb/gnulib/import/m4/locale-ja.m4
+++ b/gdb/gnulib/import/m4/locale-ja.m4
@@ -75,8 +75,8 @@ int main ()
}
changequote([,])dnl
])])
- if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
- case "$host_os" in
+ AC_RUN_IFELSE([test -s conftest$ac_exeext],
+ [case "$host_os" in
# Handle native Windows specially, because there setlocale() interprets
# "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
# "fr" or "fra" as "French" or "French_France.1252",
@@ -127,10 +127,8 @@ changequote([,])dnl
fi
fi
;;
- esac
- fi
- rm -fr conftest*
- ])
+ esac],[gt_cv_locale_ja=none],[gt_cv_locale_ja=none]
+ )])
LOCALE_JA=$gt_cv_locale_ja
AC_SUBST([LOCALE_JA])
])
diff --git a/gdb/gnulib/import/m4/locale-zh.m4
b/gdb/gnulib/import/m4/locale-zh.m4
index c5c4ef6..1417814 100644
--- a/gdb/gnulib/import/m4/locale-zh.m4
+++ b/gdb/gnulib/import/m4/locale-zh.m4
@@ -76,8 +76,8 @@ int main ()
}
changequote([,])dnl
])])
- if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
- case "$host_os" in
+ AC_RUN_IFELSE([test -s conftest$ac_exeext],
+ [case "$host_os" in
# Handle native Windows specially, because there setlocale() interprets
# "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
# "fr" or "fra" as "French" or "French_France.1252",
@@ -117,13 +117,7 @@ changequote([,])dnl
fi
fi
;;
- esac
- else
- # If there was a link error, due to mblen(), the system is so old that
- # it certainly doesn't have a chinese locale.
- gt_cv_locale_zh_CN=none
- fi
- rm -fr conftest*
+ esac],[gt_cv_locale_zh_CN=none],[gt_cv_locale_zh_CN=none])])
])
LOCALE_ZH_CN=$gt_cv_locale_zh_CN
AC_SUBST([LOCALE_ZH_CN])
