build: enable C++20
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I3ed1ec193eb30c62c5aab91f035f8e768cd747dc
diff --git a/configure.ac b/configure.ac
index 1b38879..c5b47c8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,9 +4,6 @@
AM_INIT_AUTOMAKE([subdir-objects -Wall -Wno-portability -Werror foreign])
AM_SILENT_RULES([yes])
-# Compiler flags
-CXXFLAGS="$CXXFLAGS -fpic -Wall -Werror"
-
# Check for programs
AC_PROG_CXX
AM_PROG_AR
@@ -17,7 +14,8 @@
LT_PREREQ([2.4.6])
LT_INIT([dlopen disable-static shared])
-AX_CXX_COMPILE_STDCXX_17([noext])
+AX_CXX_COMPILE_STDCXX([20],[noext])
+AX_APPEND_COMPILE_FLAGS([-fpic -Wall -Werror], [CXXFLAGS])
# Checks for libraries.
AX_PKG_CHECK_MODULES([SYSTEMD], [], [libsystemd >= 221])
@@ -55,10 +53,6 @@
AC_DEFINE_UNQUOTED([SNMP_CONF_PERSIST_PATH], ["$SNMP_CONF_PERSIST_PATH"], \
[Path of directory having persisted snmp managers.])
-
-# Checks for library functions
-LT_INIT # Required for systemd linking
-
# Check/set gtest specific functions.
AX_PTHREAD([GTEST_CPPFLAGS="-DGTEST_HAS_PTHREAD=1"],[GTEST_CPPFLAGS="-GTEST_HAS_PTHREAD=0"])
AC_SUBST(GTEST_CPPFLAGS)