diff --git a/math/saga/Makefile b/math/saga/Makefile
index ad03e1d85679..c55b0cf9248d 100644
--- a/math/saga/Makefile
+++ b/math/saga/Makefile
@@ -1,99 +1,97 @@
 # Created by: Rainer Hurling <rhurlin@gwdg.de>
 
 PORTNAME=	saga
-PORTVERSION=	8.1.0
+PORTVERSION=	8.1.1
 CATEGORIES=	math
 MASTER_SITES=	SF/saga-gis/SAGA%20-%20${PORTVERSION:C/\.[[:digit:]]\.[[:digit:]]*$//}/SAGA%20-%20${PORTVERSION}
 
 MAINTAINER=	rhurlin@FreeBSD.org
 COMMENT=	System for Automated Geoscientific Analyses
 
 LICENSE=	GPLv2 LGPL21
 LICENSE_COMB=	multi
 
 BUILD_DEPENDS=	clang${LLVM_DEFAULT}:devel/llvm${LLVM_DEFAULT} \
 		swig:devel/swig
 LIB_DEPENDS=	libcurl.so:ftp/curl \
 		libfftw3.so:math/fftw3 \
 		libgdal.so:graphics/gdal \
 		libhdf5.so:science/hdf5 \
 		libhpdf.so:print/libharu \
 		libjasper.so:graphics/jasper \
 		libodbc.so:databases/unixODBC \
 		libopencv_core.so:graphics/opencv \
 		libpdal_base.so:math/pdal \
 		libproj.so:graphics/proj \
 		libqhull_r.so:math/qhull \
 		libsvm.so:science/libsvm \
 		libsz.so:science/szip \
 		libtiff.so:graphics/tiff
 RUN_DEPENDS:=	swig:devel/swig
 
 USES=		cmake compiler:c++11-lib dos2unix gnome \
 		iconv:wchar_t libtool localbase pkgconfig python
 DOS2UNIX_GLOB=	*.cpp *.h
 USE_LDCONFIG=	yes
 USE_WX=		3.1+
 
-CMAKE_ARGS+=	-DLAS_INCLUDE:PATH=${LOCALBASE}/include/liblas12/capi/liblas.h \
-		-DLAS_LIBRARY:FILEPATH=${LOCALBASE}/lib/liblas12.so \
-		-DSVM_INCLUDE:PATH=${LOCALBASE}/include/svm.h
-CMAKE_ON=	WITH_DEV_TOOLS WITH_EXCERCISES WITH_SYSTEM_SVM
+CMAKE_ARGS+=	-DSVM_INCLUDE:PATH=${LOCALBASE}/include/svm.h
+CMAKE_ON=	WITH_DEV_TOOLS WITH_EXCERCISES WITH_MRMR WITH_SYSTEM_SVM
 CMAKE_ON+=	CMAKE_VERBOSE_MAKEFILE
-CMAKE_OFF+=	WITH_TRIANGLE
+CMAKE_OFF+=	WITH_TOOLS_LAS WITH_TRIANGLE
 
 WRKSRC=		${WRKDIR}/${PORTNAME}-${PORTVERSION}/saga-gis
 
 PLIST_SUB=	PORTVERSION=${PORTVERSION}
 
 OPTIONS_DEFINE=	PGSQL OPENMP VIGRA
 OPTIONS_DEFAULT=	PGSQL VIGRA
 OPTIONS_DEFAULT_amd64=	OPENMP
 OPTIONS_DEFAULT_i386=	OPENMP
 NO_OPTIONS_SORT=	yes
 OPTIONS_SUB=	yes
 OPENMP_DESC=	Enable Multiprocessing (only amd64 and i386)
 VIGRA_DESC=	Enable 'Vision with Generic Algorithms' Library
 
 OPENMP_CONFIGURE_ENABLE=	openmp
 PGSQL_USES=		pgsql
 PGSQL_CONFIGURE_WITH=	postgresql
 VIGRA_BUILD_DEPENDS=	${LOCALBASE}/lib/libvigraimpex.so:graphics/vigra
 VIGRA_RUN_DEPENDS=	${LOCALBASE}/lib/libvigraimpex.so:graphics/vigra
 
 .include <bsd.port.pre.mk>
 
 # make describe needs them here
 CPP=		clang-cpp${LLVM_DEFAULT}
 CC=		clang${LLVM_DEFAULT}
 CXX=		clang++${LLVM_DEFAULT}
 
 SUB_FILES=	pkg-message
 
 post-patch:
 .if ${ARCH} == "powerpc"
 	@${REINPLACE_CMD} -e 's|typedef unsigned long	DWORD;|typedef unsigned int	DWORD;|' \
 		${WRKSRC}/src/saga_core/saga_api/api_core.h
 .endif
 	@${REINPLACE_CMD} -e 's|PORTVERSION|${PORTVERSION}|' \
 		${WRKSRC}/src/saga_core/saga_gui/dlg_about.cpp
 	@${REINPLACE_CMD} -e 's|-lgomp|-lomp|' \
 		${WRKSRC}/src/accessories/templates/template4saga-tools/my_tool_library/Makefile
 	@${REINPLACE_CMD} -e 's|COMMAND python -c|COMMAND python${PYTHON_VER} -c|' \
 		${WRKSRC}/src/saga_core/saga_api/saga_api_python/CMakeLists.txt
 
 post-install:
 	${MKDIR} ${STAGEDIR}${DATADIR}
 	${INSTALL_DATA} ${WRKSRC}/src/saga_core/saga_gui/res/saga*.txt ${STAGEDIR}${DATADIR}
 	${INSTALL_DATA} ${WRKSRC}/src/saga_core/saga_gui/res/saga.png ${STAGEDIR}${DATADIR}
 	${RM} ${STAGEDIR}${DATADIR}/saga_dic.txt ${STAGEDIR}${DATADIR}/saga_srs.txt
 # toolchains dir was moved in r2805 (and followups r2810,r2811,r2820)
 	(cd ${WRKSRC}/src/accessories && ${COPYTREE_SHARE} . ${STAGEDIR}${DATADIR})
 	${RM} -R ${STAGEDIR}${DATADIR}/CMakeLists.txt
 	${RM} -R ${STAGEDIR}${DATADIR}/templates/template4saga-tools/my_tool_library/Makefile.bak
 	${INSTALL_DATA} ${WRKSRC}/src/saga_core/saga_gui/res/saga.desktop \
 		${STAGEDIR}${PREFIX}/share/applications/
 # library helper files are not needed and cripple some math/qgis extensions
 	@${RM} ${STAGEDIR}${PREFIX}/lib/saga/*.la
 
 .include <bsd.port.post.mk>
diff --git a/math/saga/distinfo b/math/saga/distinfo
index 647cf3b76776..fceee531d5e2 100644
--- a/math/saga/distinfo
+++ b/math/saga/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1640188587
-SHA256 (saga-8.1.0.tar.gz) = 6ed9a5c20d55b22e1123bea8a6d69dad7c8017f7854c014e8cb7df21363d223a
-SIZE (saga-8.1.0.tar.gz) = 8120411
+TIMESTAMP = 1641388671
+SHA256 (saga-8.1.1.tar.gz) = 343d78995ab7e317ace49c680dc147831456cbbcb09f253a31053121e805ed1a
+SIZE (saga-8.1.1.tar.gz) = 8121506