diff --git a/graphics/colmap/Makefile b/graphics/colmap/Makefile
index eb5f3a155473..80a35cd4254b 100644
--- a/graphics/colmap/Makefile
+++ b/graphics/colmap/Makefile
@@ -1,78 +1,77 @@
 PORTNAME=	colmap
-DISTVERSION=	3.12.5
+DISTVERSION=	3.12.6
 CATEGORIES=	graphics
 
 MAINTAINER=	fuz@FreeBSD.org
 COMMENT=	Structure from motion and multi-view stereo
 WWW=		https://colmap.github.io/
 
 LICENSE=	BSD2CLAUSE BSD3CLAUSE CC-BY-3.0 MIT SIFTGPU
 LICENSE_COMB=	multi
 LICENSE_NAME_SIFTGPU=	SiftGPU non-commercial license
 LICENSE_FILE_BSD2CLAUSE=	${WRKSRC}/src/thirdparty/VLFeat/LICENSE
 LICENSE_FILE_BSD3CLAUSE=	${WRKSRC}/COPYING.txt # also FLANN
 LICENSE_FILE_CC-BY-3.0=	${WRKSRC}/src/colmap/ui/media/LICENSE
 LICENSE_FILE_MIT=	${WRKSRC}/src/thirdparty/PoissonRecon/LICENSE
 LICENSE_FILE_SIFTGPU=	${WRKSRC}/src/thirdparty/SiftGPU/LICENSE
 LICENSE_PERMS_SIFTGPU=	dist-mirror pkg-mirror auto-accept
 
 LIB_DEPENDS=	libPoseLib.so:graphics/poselib \
 		libboost_program_options.so:devel/boost-libs \
 		libceres.so:math/ceres-solver \
 		libcurl.so:ftp/curl \
 		libfaiss.so:math/faiss \
 		libfreeimage.so:graphics/freeimage \
 		libglog.so:devel/glog \
 		libmetis.so:math/metis
 TEST_DEPENDS=	${LOCALBASE}/libdata/pkgconfig/gtest.pc:devel/googletest
 
 USES=		cmake:testing compiler:${OPENMP}c++11-lib desktop-file-utils eigen:3 gl \
-		localbase python:env qt:5 sqlite ssl
+		localbase python:env qt:6 sqlite ssl
 USE_CXXSTD=	c++17
 USE_GITHUB=	yes
 USE_GL=		gl glew
-USE_QT=		core gui widgets buildtools:build opengl:build qmake:build
+USE_QT=		base
 CMAKE_OFF=	CUDA_ENABLED FETCH_FAISS FETCH_POSELIB
 CMAKE_TESTING_ON=	TESTS_ENABLED
+.if exists(/usr/include/omp.h)
+CMAKE_ON+=	OPENMP_ENABLED
+.else
+CMAKE_OFF+=	OPENMP_ENABLED
+.endif
 
 LDFLAGS+=	-Wl,--as-needed # gflags, glu, xi, xmu
 
-OPTIONS_DEFINE=		CGAL DOCS OPENMP SIMD
-OPTIONS_DEFAULT=	CGAL OPENMP SIMD
+OPTIONS_DEFINE=		CGAL DOCS SIMD
+OPTIONS_DEFAULT=	CGAL SIMD
 
 CGAL_DESC=		Graph-cut on Delaunay triangulation based meshing algorithm
 CGAL_BUILD_DEPENDS=	cgal>0:math/cgal
 CGAL_LIB_DEPENDS=	libgmp.so:math/gmp
 CGAL_CMAKE_BOOL=	CGAL_ENABLED
 
 DOCS_BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}sphinx_rtd_theme>0:textproc/py-sphinx_rtd_theme@${PY_FLAVOR} \
 			gmake:devel/gmake sphinx-build:textproc/py-sphinx
 
-OPENMP_CMAKE_BOOL=	OPENMP_ENABLED
-.if !exists(/usr/include/omp.h)
-# XXX ports/199603: LLVM openmp in base doesn't support armv7 yet
-OPENMP_VARS=		OPENMP=gcc-
-.endif
-
 SIMD_CMAKE_BOOL=	SIMD_ENABLED
 SIMD_CFLAGS_i386=	-msse2
 SIMD_CFLAGS=		${SIMD_CFLAGS_${ARCH}}
 
 post-build-DOCS-on:
 	${SETENVI} ${WRK_ENV} ${MAKE_ENV} ${GMAKE} ${_MAKE_JOBS} -C ${WRKSRC}/doc html
 
 post-install:
 	${FIND} ${STAGEDIR}${PREFIX}/include -type d -empty -delete
 
 post-install-DOCS-on:
 	(cd ${WRKSRC}/doc/_build/html && ${COPYTREE_SHARE} \
 		. ${STAGEDIR}${DOCSDIR})
 	${RM} ${STAGEDIR}${DOCSDIR}/.buildinfo
 
 # https://github.com/colmap/colmap/issues/3021#issuecomment-2536520512
 pre-test:
 	@${ECHO_MSG} Expected test suite failures on displayless machines:
 	@${ECHO_MSG} "24 - feature/colmap_feature_sift_test (Subprocess aborted)"
 	@${ECHO_MSG} "88 - util/colmap_util_opengl_utils_test (Subprocess aborted)"
 
 .include <bsd.port.mk>
diff --git a/graphics/colmap/distinfo b/graphics/colmap/distinfo
index 08882ff634f1..3f46c1aa702b 100644
--- a/graphics/colmap/distinfo
+++ b/graphics/colmap/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1756392724
-SHA256 (colmap-colmap-3.12.5_GH0.tar.gz) = 93dfb220cce24d988506bbb1d27d4278eacfd4e372df61d380559d414c1bd9e4
-SIZE (colmap-colmap-3.12.5_GH0.tar.gz) = 3584697
+TIMESTAMP = 1758102568
+SHA256 (colmap-colmap-3.12.6_GH0.tar.gz) = f66d34be7a738fa753d1b71aec4fb7411d8c117beb58d1f2ba84ee2696c96410
+SIZE (colmap-colmap-3.12.6_GH0.tar.gz) = 3587565