Add autoconf version update (#196)

Signed-off-by: Duncan Ragsdale <88173870+Thistleman@users.noreply.github.com>

build.sh

@@ -139,9 +139,21 @@ while [ $# -gt 0 ]; do
 	esac
 	shift 1
 done
+
+OS_NAME=$(uname -s)
+OS_VERSION=$(uname -r)
+
+if [ "$OS_NAME" = "Darwin" ] && [ "${OS_VERSION%%.*}" -ge 23 ]; then
+    REQUIRED_AUTOCONF_VERSION="2.72"
+	TEST_AUTOCONF_VERSION="2.71"
+else
+    REQUIRED_AUTOCONF_VERSION="2.71"
+	TEST_AUTOCONF_VERSION="2.70"
+fi
+
 mkdir -p /usr/local/opt/gridlabd || error "you do not have permission to create /usr/local/opt/gridlabd"
 autoconf --version 1>/dev/null 2>&1 || error "autoconf not installed. Did you run setup.sh?"
-test "$(autoconf --version 2>/dev/null | head -n 1 | grep -o '[^ ]*$')" '>' "2.70" || error "autoconf version 2.71 or later required. Did you run setup.sh?"
+test "$(autoconf --version 2>/dev/null | head -n 1 | grep -o '[^ ]*$')" '>' "$TEST_AUTOCONF_VERSION" || error "autoconf version $REQUIRED_AUTOCONF_VERSION or later required. Did you run setup.sh?"
 git --version 1>/dev/null 2>&1 || error "you must install git to build GridLAB-D"
 test -f $SRCDIR/configure.ac || error "you must build from the source directory where configure.ac is located"
 test -f $HOME/.gridlabd/bin/activate || error "$HOME/.gridlabd is not found. Run setup.sh again."

configure.ac

@@ -45,6 +45,8 @@ m4_define([versionname], sbuild_m4_esyscmd_s([build-aux/version.sh --name]))
 m4_define([pkginstall], sbuild_m4_esyscmd_s([build-aux/version.sh --install]))
 m4_define([pkgorigin],sbuild_m4_esyscmd_s([git rev-parse --abbrev-ref HEAD]))
 
+# Set minimum autoconf version, cannot be conditional
+# Build.sh will handle validation of later version for Darwin 23 and later
 AC_PREREQ([2.71])
 AC_INIT([pkgname],[pkgversion],[gridlabd@gmail.com],[pkg])
 AC_CONFIG_SRCDIR([source/gridlabd.h])