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Description: fix autotools input for compatibility with recent autoconf
It is not possible to regenerate the blt configure script using current
versions of autoconf. Update for recent syntax so that we can get a modern
(and cross-build-friendly) configure script at build.
Author: Helmut Grohne <helmut@subdivi.de>
Bug-Debian: http://bugs.debian.org/772590
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -12,7 +12,7 @@
cat > conftest.$ac_ext <<EOF
[#]line __oline__ "configure"
#include "confdefs.h"
-ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
+AC_LANG_CASE([C++], [#ifdef __cplusplus
extern "C" void exit(int);
#endif
])dnl
--- a/configure.in
+++ b/configure.in
@@ -127,9 +127,9 @@
AC_CACHE_VAL(blt_cv_prog_cc, blt_cv_prog_cc=$CC)
AC_SUBST(CC)
AC_PROG_CPP
-if test "x${GCC}" != "x" ; then
+AS_IF([test "x${GCC}" != "x"],[
blt_have_gcc="yes"
-else
+],[
AC_MSG_CHECKING([if C compiler is really gcc])
AC_EGREP_CPP(_cc_is_gcc_, [
#ifdef __GNUC__
@@ -137,7 +137,7 @@
#endif
], [blt_have_gcc=yes], [blt_have_gcc=no])
AC_MSG_RESULT([$blt_have_gcc])
-fi
+])
#
# CFLAGS search order
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