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Fix: configure: support Autoconf 2.70
[babeltrace.git]
/
configure.ac
diff --git
a/configure.ac
b/configure.ac
index 3d1286135ae9ec1b4ccba680b7b5421f724b7c30..068b9535e798e20101d7505698a268caa2047a94 100644
(file)
--- a/
configure.ac
+++ b/
configure.ac
@@
-93,7
+93,8
@@
AC_SUBST(LT_NO_UNDEFINED)
## ##
# Choose the c compiler
## ##
# Choose the c compiler
-AC_PROG_CC_STDC
+AC_PROG_CC
+m4_version_prereq([2.70], [], [AC_PROG_CC_STDC])
# Make sure the c compiler supports C99
AS_IF([test "$ac_cv_prog_cc_c99" = "no"], [AC_MSG_ERROR([The compiler does not support C99])])
# Make sure the c compiler supports C99
AS_IF([test "$ac_cv_prog_cc_c99" = "no"], [AC_MSG_ERROR([The compiler does not support C99])])
@@
-226,7
+227,9
@@
detection.
AM_CONDITIONAL([HAVE_BISON], [test "x$have_bison" = "xyes"])
# check for flex
AM_CONDITIONAL([HAVE_BISON], [test "x$have_bison" = "xyes"])
# check for flex
-AC_PROG_LEX
+# Prior to autoconf 2.70, AC_PROG_FLEX did not take an argument. This is not a
+# problem since the argument is silently ignored by older versions.
+AC_PROG_LEX([noyywrap])
AX_PROG_FLEX_VERSION([2.5.35], [have_flex=yes])
AS_IF([test "x$have_flex" != "xyes"], [
AX_PROG_FLEX_VERSION([2.5.35], [have_flex=yes])
AS_IF([test "x$have_flex" != "xyes"], [
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