On Thu, Oct 11, 2001 at 10:16:38AM +0400, Alexander V. Lukyanov wrote:
> > Asked someone in debian/potato to try this out; the static initializer
> > test failed.
> >
> > Reading specs from /usr/lib/gcc-lib/i386-linux/2.95.2/specs
> > gcc version 2.95.2 20000220 (Debian GNU/Linux)
>
> This usually means that gcc was incorrecly compiled itself. The feature is
In this case, he had gcc installed, but not g++; for some reason, this
installs a "g++" binary (that fails) in Debian.
Attached is a patch to test C++ compiler sanity early, so failure doesn't
come up with some irrelevant error message later and confuse innocent
programmers. :)
> int f() { return 1; }
> static int a=f();
By the way, the test reads:
int f() { return 1; }
int a=f();
not static. It probably doesn't matter. (There are issues with non-static
global initializers across source files, of course, but that's not what's
being tested here.)
--
Glenn Maynard
Index: configure.in
===================================================================
RCS file: /home/lav/cvsroot/lftp/configure.in,v
retrieving revision 1.105
diff -u -r1.105 configure.in
--- configure.in 2001/09/13 15:37:33 1.105
+++ configure.in 2001/10/11 07:29:28
@@ -20,6 +20,9 @@
AC_PROG_CC
AC_PROG_CXX
+dnl Make sure C++ build environment is sane.
+LFTP_CXX_TEST
+
dnl AC_CANONICAL_HOST
AC_ISC_POSIX
Index: m4/lftp.m4
===================================================================
RCS file: /home/lav/cvsroot/lftp/m4/lftp.m4,v
retrieving revision 1.1
diff -u -r1.1 lftp.m4
--- m4/lftp.m4 2001/03/22 12:46:51 1.1
+++ m4/lftp.m4 2001/10/11 07:29:28
@@ -41,6 +41,20 @@
fi
AC_MSG_RESULT(using $CXX)
])
+dnl try to build and run a dummy program
+AC_DEFUN(LFTP_CXX_TEST,
+[
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_MSG_CHECKING(if c++ compiler works)
+ AC_TRY_RUN([int main() { return(0); } ],
+ [cxx_sane=yes], [cxx_sane=no], [cxx_sane=yes])
+ AC_MSG_RESULT($cxx_sane)
+ if test x$cxx_sane = xno; then
+ AC_MSG_ERROR(C++ test compile failed; check your C++ compiler)
+ fi
+ AC_LANG_RESTORE
+])
AC_DEFUN(LFTP_FUNC_SSCANF_CONST,
[
