net-mgmt/netdata: Fix build with protobuf 22+

net-mgmt/netdata/Makefile

@@ -20,7 +20,7 @@ RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}urllib3>0:net/py-urllib3@${PY_FLAVOR} \
 		bash:shells/bash \
 		curl:ftp/curl
 
-USES=		autoreconf cpe gmake localbase:ldflags pathfix \
+USES=		autoreconf compiler:c++17-lang cpe gmake localbase:ldflags pathfix \
 		pkgconfig:both python shebangfix ssl
 USE_RC_SUBR=	${PORTNAME}
 SHEBANG_GLOB=	*
@@ -36,6 +36,7 @@ CONFIGURE_ARGS=	--disable-h2o --disable-unit-tests --with-user=netdata
 
 INSTALL_TARGET=	install-strip
 CPPFLAGS+=	-D_WANT_VMMETER
+USE_CXXSTD=	c++17
 
 SUB_FILES=	${PORTNAME}.conf.sample
 SUB_LIST=	NETDATA_CACHE=${NETDATA_CACHE} \

net-mgmt/netdata/files/patch-configure.ac

---- configure.ac.orig	2023-07-23 18:34:41.165387302 -0600
-+++ configure.ac	2023-07-23 18:42:45.117534306 -0600
+--- configure.ac.orig	2023-10-30 12:43:22 UTC
++++ configure.ac
 @@ -5,11 +5,11 @@
  AC_PREREQ(2.60)
  
@@ -16,9 +16,18 @@
  
  AM_MAINTAINER_MODE([disable])
  if test x"$USE_MAINTAINER_MODE" = xyes; then
-@@ -1354,15 +1354,15 @@
+@@ -243,7 +243,7 @@ fi
+ # C++ version check
+ 
+ # Check for C++17 support (optional)
+-# AX_CXX_COMPILE_STDCXX(17, noext, optional)
++AX_CXX_COMPILE_STDCXX(17, noext, optional)
+ 
+ if test "x$HAVE_CXX17" != "x1"; then
+   # Check for C++11 support (optional)
+@@ -1416,15 +1416,15 @@ if test "${enable_ml}" = "yes" -a "${have_uuid}" != "y
  fi
-
+ 
  # Check if submodules have not been fetched. Fail if ML was explicitly requested.
 -AC_MSG_CHECKING([if git submodules are present for machine learning functionality])
 -if test -f "ml/dlib/dlib/all/source.cpp"; then
@@ -36,10 +45,10 @@
 +#    AC_MSG_RESULT([no])
 +#    have_ml_submodules="no"
 +# fi
-
+ 
  if test "${enable_ml}" = "yes" -a "${have_ml_submodules}" = "no"; then
      AC_MSG_ERROR([You have explicitly requested --enable-ml functionality but it cannot be built because the required git submodules are missing.])
-@@ -1382,8 +1382,8 @@
+@@ -1444,8 +1444,8 @@ fi
  AM_CONDITIONAL([ENABLE_ML], [test "${build_ml}" = "yes"])
  if test "${build_ml}" = "yes"; then
      AC_DEFINE([ENABLE_ML], [1], [anomaly detection usability])
@@ -48,9 +57,9 @@
 +#    OPTIONAL_ML_CFLAGS="-DDLIB_NO_GUI_SUPPORT -I \$(abs_top_srcdir)/ml/dlib"
 +#    OPTIONAL_ML_LIBS=""
  fi
-
-
-@@ -1788,14 +1788,14 @@
+ 
+ 
+@@ -1850,14 +1850,14 @@ AC_SUBST([OPTIONAL_DL_LIBS])
  
  AC_DEFINE_UNQUOTED([NETDATA_USER], ["${with_user}"], [use this user to drop privileged])