compiler warning cleanup: is_signed_type: compare -1 to 1

[lttng-tools.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index f3fc79054996c1795ba6ba83a8372b7b84f5be17..80c6d0064ef0c7cd9e6a8694350420308bed6b7d 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 dnl SPDX-License-Identifier: GPL-2.0-only
 AC_PREREQ([2.64])
-AC_INIT([lttng-tools],[2.12.0-rc2],[jeremie.galarneau@efficios.com],[],[https://lttng.org])
+AC_INIT([lttng-tools],[2.12.3],[jeremie.galarneau@efficios.com],[],[https://lttng.org])
 
 AC_CONFIG_HEADERS([include/config.h])
 AC_CONFIG_AUX_DIR([config])
@@ -21,7 +21,8 @@ AC_REQUIRE_AUX_FILE([tap-driver.sh])
 AC_USE_SYSTEM_EXTENSIONS
 AC_SYS_LARGEFILE
 AC_PROG_CC
-AC_PROG_CC_STDC
+# AC_PROG_CC_STDC was merged in AC_PROG_CC in autoconf 2.70
+m4_version_prereq([2.70], [], [AC_PROG_CC_STDC])
 AC_PROG_CXX
 RW_PROG_CXX_WORKS
 AM_CONDITIONAL([CXX_WORKS], [test "x$rw_cv_prog_cxx_works" = "xyes"])
@@ -102,7 +103,9 @@ detection.
 AM_CONDITIONAL([HAVE_BISON], [test "x$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])
 FLEX=$LEX
 AX_PROG_FLEX_VERSION([2.5.35], [have_flex=yes])
 
@@ -579,7 +582,7 @@ AM_CONDITIONAL([LTTNG_TOOLS_BUILD_WITH_LIBPFM], [test "x$have_libpfm" = "xyes"])
 swig_version=2.0.0
 
 AC_ARG_ENABLE([python-bindings],
-              [AC_HELP_STRING([--enable-python-bindings],
+              [AS_HELP_STRING([--enable-python-bindings],
                               [compile Python bindings])],
               [enable_python_binding=$enableval], [enable_python_binding=no])