diff --git a/net/ecal/Makefile b/net/ecal/Makefile
index 9b93f43b48a0..4302995e65ea 100644
--- a/net/ecal/Makefile
+++ b/net/ecal/Makefile
@@ -1,66 +1,66 @@
 PORTNAME=	ecal
 DISTVERSIONPREFIX=	v
 DISTVERSION=	5.12.1
 PORTREVISION=	5
 CATEGORIES=	net devel
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Enhanced Communication Abstraction Layer
 WWW=		https://eclipse-ecal.github.io/ecal/index.html
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 BROKEN_armv7=	link fails: undefined reference due to --no-allow-shlib-undefined: absl::lts_20230125::hash_internal::CityHash32(char const*, unsigned int)
 BROKEN_i386=	link fails: undefined reference due to --no-allow-shlib-undefined: absl::lts_20230125::hash_internal::CityHash32(char const*, unsigned int)
 
 BUILD_DEPENDS=	asio>0:net/asio \
 		termcolor>0:devel/termcolor
 LIB_DEPENDS=	libcurl.so:ftp/curl \
 		libfmt.so:devel/libfmt \
 		libfineftp-server.so:ftp/fineftp-server \
 		libftxui-component.so:devel/ftxui \
 		libhdf5.so:science/hdf5 \
 		libprotobuf.so:devel/protobuf \
 		libqwt.so:x11-toolkits/qwt6@qt5 \
 		libspdlog.so:devel/spdlog \
 		libtinyxml2.so:textproc/tinyxml2 \
 		libyaml-cpp.so:devel/yaml-cpp
 		# binaries aren't linked with libfineftp-server.so, see https://github.com/continental/ecal/issues/381; same with libcurl.so
 
-USES=		cmake compiler:c++17-lang desktop-file-utils localbase:ldflags qt:5 shared-mime-info
+USES=		cmake compiler:c++17-lang desktop-file-utils localbase:ldflags pkgconfig qt:5 shared-mime-info
 USE_QT=		core gui widgets buildtools:build qmake:build
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	eclipse-ecal
 GH_TUPLE=	eclipse-ecal:tcp_pubsub:f59da78:tcp_pubsub/thirdparty/tcp_pubsub \
 		brofield:simpleini:9b3ed7e:simpleini/thirdparty/simpleini \
 		steinwurf:recycle:c542570:recycle/thirdparty/recycle \
 		xguerin:tclap:349170a:tclap/thirdparty/tclap
 
 CMAKE_ON=	BUILD_SHARED_LIBS
 CMAKE_OFF=	BUILD_SAMPLES \
 		ECAL_THIRDPARTY_BUILD_SPDLOG ECAL_THIRDPARTY_BUILD_TINYXML2 ECAL_THIRDPARTY_BUILD_FINEFTP ECAL_THIRDPARTY_BUILD_TERMCOLOR \
 		ECAL_THIRDPARTY_BUILD_FTXUI ECAL_THIRDPARTY_BUILD_GTEST ECAL_THIRDPARTY_BUILD_PROTOBUF \
 		ECAL_THIRDPARTY_BUILD_CURL ECAL_THIRDPARTY_BUILD_HDF5 ECAL_THIRDPARTY_BUILD_YAML-CPP ECAL_THIRDPARTY_BUILD_UDPCAP \
 		CPACK_PACK_WITH_INNOSETUP
 CMAKE_ARGS=	-DGIT_REVISION_MAJOR=${DISTVERSION:R:R} \
 		-DGIT_REVISION_MINOR=${DISTVERSION:R:E} \
 		-DGIT_REVISION_PATCH=${DISTVERSION:E} \
 		-Dasio_INCLUDE_DIR=${LOCALBASE}/include \
 		-Dqwt_INCLUDE_DIR=${LOCALBASE}/include/qt5/qwt6 \
 		-Dqwt_LIBRARY=${LOCALBASE}/lib/qt5/libqwt.so
 
 CXXFLAGS+=	-pthread # see https://github.com/eclipse-ecal/ecal/issues/933
 LDFLAGS+=	-labsl_hash -labsl_log_internal_message -labsl_log_internal_nullguard -labsl_spinlock_wait
 USE_CXXSTD=	c++17
 
 PLIST_SUB=	VERSION=${DISTVERSION}
 
 CONFLICTS_BUILD=	tclap simpleini # epub isn't compatible with tclap-1.4rc1, epub isn't compatible with simpleini, because some header isn't installed
 
 post-install: # not sure why isn't this installed automatically
 	${INSTALL_LIB} ${BUILD_WRKSRC}/lib/libsys_core.so ${STAGEDIR}${PREFIX}/lib
 
 .include <bsd.port.mk>
diff --git a/net/ecal/files/patch-app_rec_rec__server__core_CMakeLists.txt b/net/ecal/files/patch-app_rec_rec__server__core_CMakeLists.txt
new file mode 100644
index 000000000000..e20fc1430fd9
--- /dev/null
+++ b/net/ecal/files/patch-app_rec_rec__server__core_CMakeLists.txt
@@ -0,0 +1,21 @@
+--- app/rec/rec_server_core/CMakeLists.txt.orig	2023-10-27 08:38:06 UTC
++++ app/rec/rec_server_core/CMakeLists.txt
+@@ -20,7 +20,8 @@ find_package(fineftp REQUIRED)
+ find_package(Protobuf REQUIRED)
+ find_package(spdlog REQUIRED)
+ find_package(fineftp REQUIRED)
+-find_package(tinyxml2 REQUIRED)
++find_package(PkgConfig REQUIRED)
++pkg_check_modules(tinyxml2 REQUIRED IMPORTED_TARGET tinyxml2)
+ 
+ set(PROJECT_NAME rec_server_core)
+ 
+@@ -66,7 +66,7 @@ target_link_libraries(${PROJECT_NAME}
+ 
+ target_link_libraries(${PROJECT_NAME}
+     PRIVATE
+-    tinyxml2::tinyxml2
++    PkgConfig::tinyxml2
+     protobuf::libprotobuf
+     eCAL::core
+     eCAL::app_pb
diff --git a/net/ecal/files/patch-app_sys_sys__core_CMakeLists.txt b/net/ecal/files/patch-app_sys_sys__core_CMakeLists.txt
new file mode 100644
index 000000000000..d69971c6de78
--- /dev/null
+++ b/net/ecal/files/patch-app_sys_sys__core_CMakeLists.txt
@@ -0,0 +1,21 @@
+--- app/sys/sys_core/CMakeLists.txt.orig	2023-10-27 08:38:06 UTC
++++ app/sys/sys_core/CMakeLists.txt
+@@ -21,7 +21,8 @@ find_package(spdlog REQUIRED)
+ find_package(Threads REQUIRED)
+ find_package(Protobuf REQUIRED)
+ find_package(spdlog REQUIRED)
+-find_package(tinyxml2 REQUIRED)
++find_package(PkgConfig REQUIRED)
++pkg_check_modules(tinyxml2 REQUIRED IMPORTED_TARGET tinyxml2)
+ 
+ set(ecalsyscore_src
+   include/ecalsys/ecal_sys.h
+@@ -88,7 +88,7 @@ target_link_libraries(${PROJECT_NAME}
+ 
+ target_link_libraries(${PROJECT_NAME}
+   Threads::Threads
+-  tinyxml2::tinyxml2
++  PkgConfig::tinyxml2
+   spdlog::spdlog
+   protobuf::libprotobuf
+   eCAL::core