diff --git a/.gitignore b/.gitignore
index a7761a7..2d41628 100644
--- a/.gitignore
+++ b/.gitignore
@@ -77,3 +77,4 @@
 /gmsh-4.13.2-source-fedora.tar.xz
 /gmsh-4.14.0-source-fedora.tar.xz
 /gmsh-4.14.1-source-fedora.tar.xz
+/gmsh-4.15.0-source-fedora.tar.xz
diff --git a/gmsh.spec b/gmsh.spec
index 664da70..f1597f5 100644
--- a/gmsh.spec
+++ b/gmsh.spec
@@ -9,7 +9,7 @@
 %endif
 %bcond_without mpich
 
-%global sover 4.14
+%global sover 4.15
 
 %if 0%{?fedora} >= 33 || 0%{?rhel} >= 9
 %bcond_without flexiblas
@@ -17,8 +17,8 @@
 
 Name:       gmsh
 Summary:    A three-dimensional finite element mesh generator
-Version:    4.14.1
-Release:    2%{?dist}
+Version:    4.15.0
+Release:    1%{?dist}
 # MPI not available on i686
 ExcludeArch: %{ix86}
 
@@ -41,6 +41,8 @@ Patch2:     gmsh_julia.patch
 Patch3:     gmsh_install.patch
 # Unbundle gl2ps
 Patch4:     gmsh_unbundle_gl2ps.patch
+# Make gmm use superlu
+Patch5:     gmsh_gmm.patch
 
 BuildRequires: ann-devel
 %if %{with flexiblas}
@@ -48,7 +50,6 @@ BuildRequires:  flexiblas-devel
 %else
 BuildRequires:  blas-devel, lapack-devel
 %endif
-BuildRequires: eigen3-devel
 BuildRequires: cgnslib-devel
 BuildRequires: cmake
 BuildRequires: desktop-file-utils
@@ -69,6 +70,7 @@ BuildRequires: netgen-mesher-devel-private
 BuildRequires: opencascade-devel
 BuildRequires: python3-devel
 BuildRequires: python3-setuptools
+BuildRequires: SuperLU-devel
 BuildRequires: voro++-devel
 BuildRequires: zlib-devel
 BuildRequires: texinfo
@@ -218,10 +220,12 @@ cp contrib/Netgen/nglib_gmsh.h contrib/Netgen/nglib_gmsh.cpp src/mesh
 # hxt: see contrib/hxt/CREDITS.txt
 # kbipack: Source not available on the net anymore
 # onelab: gmsh internal module
+# WinslowUntangler: gmsh internal module (?)
 (
 cd contrib;
 ls -1 | \
     grep -v ^bamg$ | \
+    grep -v ^blossom$ | \
     grep -v ^DiscreteIntegration$ | \
     grep -v ^MeshOptimizer$ | \
     grep -v ^HighOrderMeshOptimizer$ | \
@@ -230,6 +234,7 @@ ls -1 | \
     grep -v ^kbipack$ | \
     grep -v ^onelab$ | \
     grep -v ^tinyobjloader$ | \
+    grep -v ^WinslowUntangler$ | \
 xargs rm -rf
 )
 
@@ -244,18 +249,11 @@ gmsh_cmake_args="\
     -DENABLE_BUILD_LIB=YES \
     -DENABLE_BUILD_SHARED=YES \
     -DENABLE_BUILD_DYNAMIC=YES \
-    -DENABLE_MPEG_ENCODE=NO \
-    -DENABLE_METIS=YES \
-    -DENABLE_BLOSSOM=NO \
-    -DENABLE_CGNS=YES \
-    -DENABLE_MED=YES \
-    -DENABLE_EIGEN=YES \
-    -DEIGEN_INC=%{_includedir}/eigen3 \
-    -DENABLE_OCC=YES"
+    -DENABLE_MPEG_ENCODE=NO"
 
 ### serial version ###
 %define _vpath_builddir %{_target_platform}
-%cmake .. \
+%cmake \
     -DENABLE_OPENMP=ON \
     $gmsh_cmake_args
 
@@ -266,7 +264,7 @@ gmsh_cmake_args="\
 %{_openmpi_load}
 export CXX=mpicxx
 %define _vpath_builddir %{_target_platform}-openmpi
-%cmake .. \
+%cmake \
     -DENABLE_MPI=YES \
     -DCMAKE_INSTALL_BINDIR=$MPI_BIN \
     -DCMAKE_INSTALL_LIBDIR=$MPI_LIB \
@@ -282,7 +280,7 @@ export CXX=mpicxx
 %{_mpich_load}
 export CXX=mpicxx
 %define _vpath_builddir %{_target_platform}-mpich
-%cmake .. \
+%cmake \
     -DENABLE_MPI=YES \
     -DCMAKE_INSTALL_BINDIR=$MPI_BIN \
     -DCMAKE_INSTALL_LIBDIR=$MPI_LIB \
@@ -322,7 +320,7 @@ cp -a src/parser/Gmsh.* %{_target_platform}-mpich
 find %{buildroot} -type f -name libgmsh.a -exec rm -f {} \;
 
 # Install icon and .desktop file
-convert -scale 128 utils/icons/gmsh.png icon_128x128.png
+magick utils/icons/gmsh.png -scale 128 icon_128x128.png
 install -Dpm 0644 icon_128x128.png  %{buildroot}%{_datadir}/icons/hicolor/128x128/apps/%{name}.png
 desktop-file-install --dir=%{buildroot}%{_datadir}/applications %{SOURCE1}
 
@@ -402,6 +400,9 @@ rm -f %{buildroot}%{_defaultdocdir}/%{name}/LICENSE.txt
 
 
 %changelog
+* Sun Oct 26 2025 Sandro Mani <manisandro@gmail.com> - 4.15.0-1
+- Update to 4.15.0
+
 * Fri Sep 19 2025 Python Maint <python-maint@redhat.com> - 4.14.1-2
 - Rebuilt for Python 3.14.0rc3 bytecode
 
diff --git a/gmsh_gmm.patch b/gmsh_gmm.patch
new file mode 100644
index 0000000..271327e
--- /dev/null
+++ b/gmsh_gmm.patch
@@ -0,0 +1,22 @@
+diff -rupN gmsh-4.15.0-source/CMakeLists.txt gmsh-4.15.0-source-new/CMakeLists.txt
+--- gmsh-4.15.0-source/CMakeLists.txt	2025-11-16 12:12:00.997452631 +0100
++++ gmsh-4.15.0-source-new/CMakeLists.txt	2025-11-16 13:18:32.590269286 +0100
+@@ -1271,6 +1271,18 @@ if(HAVE_SOLVER)
+       if(ENABLE_GMM) # use GMM/MUMPS interface
+         add_definitions(-DGMM_USES_MUMPS)
+       endif()
++    else()
++      if(ENABLE_GMM) # use GMM/MUMPS interface
++        add_definitions(-DGMM_USES_SUPERLU -DGMM_NO_SUPERLU_INCLUDE_SUBDIR)
++        find_path(SUPERLU_INC "slu_util.h" PATH_SUFFIXES SuperLU)
++        include_directories(${SUPERLU_INC})
++      endif()
++    endif()
++  else()
++    if(ENABLE_GMM) # use GMM/MUMPS interface
++      add_definitions(-DGMM_USES_SUPERLU -DGMM_NO_SUPERLU_INCLUDE_SUBDIR)
++      find_path(SUPERLU_INC "slu_util.h" PATH_SUFFIXES SuperLU)
++      include_directories(${SUPERLU_INC})
+     endif()
+   endif()
+ 
diff --git a/gmsh_install.patch b/gmsh_install.patch
index cd3370c..5e02993 100644
--- a/gmsh_install.patch
+++ b/gmsh_install.patch
@@ -1,6 +1,6 @@
-diff -rupN --no-dereference gmsh-4.14.1-source/CMakeLists.txt gmsh-4.14.1-source-new/CMakeLists.txt
---- gmsh-4.14.1-source/CMakeLists.txt	2025-09-02 14:32:42.435707935 +0200
-+++ gmsh-4.14.1-source-new/CMakeLists.txt	2025-09-02 14:32:42.439022497 +0200
+diff -rupN --no-dereference gmsh-4.15.0-source/CMakeLists.txt gmsh-4.15.0-source-new/CMakeLists.txt
+--- gmsh-4.15.0-source/CMakeLists.txt	2025-11-16 12:11:30.706154249 +0100
++++ gmsh-4.15.0-source-new/CMakeLists.txt	2025-11-16 12:11:30.710717577 +0100
 @@ -278,7 +278,7 @@ if(ENABLE_RPATH)
    # when building, don't use the install RPATH already (but later on when
    # installing)
diff --git a/gmsh_julia.patch b/gmsh_julia.patch
index 2b936f7..90c37cf 100644
--- a/gmsh_julia.patch
+++ b/gmsh_julia.patch
@@ -1,6 +1,6 @@
-diff -rupN --no-dereference gmsh-4.14.1-source/CMakeLists.txt gmsh-4.14.1-source-new/CMakeLists.txt
---- gmsh-4.14.1-source/CMakeLists.txt	2025-09-02 14:32:41.955321611 +0200
-+++ gmsh-4.14.1-source-new/CMakeLists.txt	2025-09-02 14:32:42.213216407 +0200
+diff -rupN --no-dereference gmsh-4.15.0-source/CMakeLists.txt gmsh-4.15.0-source-new/CMakeLists.txt
+--- gmsh-4.15.0-source/CMakeLists.txt	2025-11-16 12:11:30.209672907 +0100
++++ gmsh-4.15.0-source-new/CMakeLists.txt	2025-11-16 12:11:30.455854462 +0100
 @@ -2041,7 +2041,7 @@ endif()
  if(ENABLE_BUILD_LIB OR ENABLE_BUILD_SHARED OR ENABLE_BUILD_DYNAMIC)
    install(FILES ${GMSH_API} DESTINATION ${GMSH_INC})
diff --git a/gmsh_med.patch b/gmsh_med.patch
index 9390b3a..696ca1b 100644
--- a/gmsh_med.patch
+++ b/gmsh_med.patch
@@ -1,6 +1,6 @@
-diff -rupN --no-dereference gmsh-4.14.1-source/src/common/CommandLine.cpp gmsh-4.14.1-source-new/src/common/CommandLine.cpp
---- gmsh-4.14.1-source/src/common/CommandLine.cpp	2025-07-24 12:35:20.000000000 +0200
-+++ gmsh-4.14.1-source-new/src/common/CommandLine.cpp	2025-09-02 14:32:41.960203688 +0200
+diff -rupN --no-dereference gmsh-4.15.0-source/src/common/CommandLine.cpp gmsh-4.15.0-source-new/src/common/CommandLine.cpp
+--- gmsh-4.15.0-source/src/common/CommandLine.cpp	2025-10-01 16:39:02.000000000 +0200
++++ gmsh-4.15.0-source-new/src/common/CommandLine.cpp	2025-11-16 12:11:30.214030834 +0100
 @@ -42,7 +42,7 @@
  #endif
  
@@ -10,10 +10,10 @@ diff -rupN --no-dereference gmsh-4.14.1-source/src/common/CommandLine.cpp gmsh-4
  #endif
  
  #if defined(HAVE_POST)
-diff -rupN --no-dereference gmsh-4.14.1-source/src/fltk/helpWindow.cpp gmsh-4.14.1-source-new/src/fltk/helpWindow.cpp
---- gmsh-4.14.1-source/src/fltk/helpWindow.cpp	2025-09-02 11:38:17.000000000 +0200
-+++ gmsh-4.14.1-source-new/src/fltk/helpWindow.cpp	2025-09-02 14:32:41.960660399 +0200
-@@ -36,7 +36,7 @@
+diff -rupN --no-dereference gmsh-4.15.0-source/src/fltk/helpWindow.cpp gmsh-4.15.0-source-new/src/fltk/helpWindow.cpp
+--- gmsh-4.15.0-source/src/fltk/helpWindow.cpp	2025-10-01 16:39:02.000000000 +0200
++++ gmsh-4.15.0-source-new/src/fltk/helpWindow.cpp	2025-11-16 12:11:30.214367145 +0100
+@@ -37,7 +37,7 @@
  #endif
  
  #if defined(HAVE_MED)
@@ -22,9 +22,9 @@ diff -rupN --no-dereference gmsh-4.14.1-source/src/fltk/helpWindow.cpp gmsh-4.14
  #endif
  
  static const char *help_link(Fl_Widget *w, const char *uri)
-diff -rupN --no-dereference gmsh-4.14.1-source/src/geo/GModelIO_MED.cpp gmsh-4.14.1-source-new/src/geo/GModelIO_MED.cpp
---- gmsh-4.14.1-source/src/geo/GModelIO_MED.cpp	2025-07-24 12:35:20.000000000 +0200
-+++ gmsh-4.14.1-source-new/src/geo/GModelIO_MED.cpp	2025-09-02 14:32:41.960938701 +0200
+diff -rupN --no-dereference gmsh-4.15.0-source/src/geo/GModelIO_MED.cpp gmsh-4.15.0-source-new/src/geo/GModelIO_MED.cpp
+--- gmsh-4.15.0-source/src/geo/GModelIO_MED.cpp	2025-10-01 16:39:02.000000000 +0200
++++ gmsh-4.15.0-source-new/src/geo/GModelIO_MED.cpp	2025-11-16 12:11:30.214658519 +0100
 @@ -26,7 +26,7 @@
  #include "discreteVertex.h"
  #include "Context.h"
@@ -34,9 +34,9 @@ diff -rupN --no-dereference gmsh-4.14.1-source/src/geo/GModelIO_MED.cpp gmsh-4.1
  
  #if(MED_MAJOR_NUM >= 3)
  // To avoid too many ifdefs below we use defines for the bits of the
-diff -rupN --no-dereference gmsh-4.14.1-source/src/post/PViewDataGModelIO_MED.cpp gmsh-4.14.1-source-new/src/post/PViewDataGModelIO_MED.cpp
---- gmsh-4.14.1-source/src/post/PViewDataGModelIO_MED.cpp	2025-07-24 12:35:21.000000000 +0200
-+++ gmsh-4.14.1-source-new/src/post/PViewDataGModelIO_MED.cpp	2025-09-02 14:32:41.961256864 +0200
+diff -rupN --no-dereference gmsh-4.15.0-source/src/post/PViewDataGModelIO_MED.cpp gmsh-4.15.0-source-new/src/post/PViewDataGModelIO_MED.cpp
+--- gmsh-4.15.0-source/src/post/PViewDataGModelIO_MED.cpp	2025-10-01 16:39:03.000000000 +0200
++++ gmsh-4.15.0-source-new/src/post/PViewDataGModelIO_MED.cpp	2025-11-16 12:11:30.214886156 +0100
 @@ -11,7 +11,7 @@
  
  #if defined(HAVE_MED)
diff --git a/gmsh_python.patch b/gmsh_python.patch
index 06dcb3a..75cfbb1 100644
--- a/gmsh_python.patch
+++ b/gmsh_python.patch
@@ -1,6 +1,6 @@
-diff -rupN --no-dereference gmsh-4.14.1-source/CMakeLists.txt gmsh-4.14.1-source-new/CMakeLists.txt
---- gmsh-4.14.1-source/CMakeLists.txt	2025-08-30 13:14:13.000000000 +0200
-+++ gmsh-4.14.1-source-new/CMakeLists.txt	2025-09-02 14:32:41.711919812 +0200
+diff -rupN --no-dereference gmsh-4.15.0-source/CMakeLists.txt gmsh-4.15.0-source-new/CMakeLists.txt
+--- gmsh-4.15.0-source/CMakeLists.txt	2025-10-25 17:09:26.000000000 +0200
++++ gmsh-4.15.0-source-new/CMakeLists.txt	2025-11-16 12:11:29.982761471 +0100
 @@ -2001,6 +2001,8 @@ else()
    set(GMSH_INC ${CMAKE_INSTALL_INCLUDEDIR})
  endif()
@@ -28,9 +28,9 @@ diff -rupN --no-dereference gmsh-4.14.1-source/CMakeLists.txt gmsh-4.14.1-source
    if(ENABLE_PRIVATE_API)
      install(FILES ${GMSH_PRIVATE_API} DESTINATION ${GMSH_INC}/gmsh)
      if(HAVE_CONTRIB_EIGEN) # the private API depends on Eigen
-diff -rupN --no-dereference gmsh-4.14.1-source/src/common/GmshMessage.cpp gmsh-4.14.1-source-new/src/common/GmshMessage.cpp
---- gmsh-4.14.1-source/src/common/GmshMessage.cpp	2025-08-19 12:22:31.000000000 +0200
-+++ gmsh-4.14.1-source-new/src/common/GmshMessage.cpp	2025-09-02 14:32:41.712447178 +0200
+diff -rupN --no-dereference gmsh-4.15.0-source/src/common/GmshMessage.cpp gmsh-4.15.0-source-new/src/common/GmshMessage.cpp
+--- gmsh-4.15.0-source/src/common/GmshMessage.cpp	2025-10-01 16:39:02.000000000 +0200
++++ gmsh-4.15.0-source-new/src/common/GmshMessage.cpp	2025-11-16 12:11:29.983375719 +0100
 @@ -177,14 +177,6 @@ void Msg::Initialize(int argc, char **ar
    if(CTX::instance()->exeFileName.empty() && _commandLineArgs.size())
      CTX::instance()->exeFileName = _commandLineArgs[0];
diff --git a/gmsh_unbundle_gl2ps.patch b/gmsh_unbundle_gl2ps.patch
index 1c7a5c1..0c0047d 100644
--- a/gmsh_unbundle_gl2ps.patch
+++ b/gmsh_unbundle_gl2ps.patch
@@ -1,6 +1,6 @@
-diff -rupN --no-dereference gmsh-4.14.1-source/CMakeLists.txt gmsh-4.14.1-source-new/CMakeLists.txt
---- gmsh-4.14.1-source/CMakeLists.txt	2025-09-02 14:32:42.662049508 +0200
-+++ gmsh-4.14.1-source-new/CMakeLists.txt	2025-09-02 14:32:42.665923375 +0200
+diff -rupN --no-dereference gmsh-4.15.0-source/CMakeLists.txt gmsh-4.15.0-source-new/CMakeLists.txt
+--- gmsh-4.15.0-source/CMakeLists.txt	2025-11-16 12:11:30.943987998 +0100
++++ gmsh-4.15.0-source-new/CMakeLists.txt	2025-11-16 12:11:30.948218140 +0100
 @@ -1728,6 +1728,8 @@ if(NOT ENABLE_BUILD_DYNAMIC AND NOT ENAB
    endif()
  endif()
@@ -10,9 +10,9 @@ diff -rupN --no-dereference gmsh-4.14.1-source/CMakeLists.txt gmsh-4.14.1-source
  # Linux-specific linker options
  if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
    if(HAVE_OCC)
-diff -rupN --no-dereference gmsh-4.14.1-source/src/graphics/CMakeLists.txt gmsh-4.14.1-source-new/src/graphics/CMakeLists.txt
---- gmsh-4.14.1-source/src/graphics/CMakeLists.txt	2025-07-24 12:35:21.000000000 +0200
-+++ gmsh-4.14.1-source-new/src/graphics/CMakeLists.txt	2025-09-02 14:32:42.666317929 +0200
+diff -rupN --no-dereference gmsh-4.15.0-source/src/graphics/CMakeLists.txt gmsh-4.15.0-source-new/src/graphics/CMakeLists.txt
+--- gmsh-4.15.0-source/src/graphics/CMakeLists.txt	2025-10-01 16:39:02.000000000 +0200
++++ gmsh-4.15.0-source-new/src/graphics/CMakeLists.txt	2025-11-16 12:11:30.948782419 +0100
 @@ -15,7 +15,6 @@ set(SRC
    drawScales.cpp
    drawGraph2d.cpp
diff --git a/sources b/sources
index b2ba876..753782a 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (gmsh-4.14.1-source-fedora.tar.xz) = a7f8697af921f8739aa69158581c064c7209daf58c2a48f30950b449edc3cf7c4453a665ab698f10c57211c2baec96544dbc56aee4ac62b8dde1629297b65ce6
+SHA512 (gmsh-4.15.0-source-fedora.tar.xz) = eac4f6e8cd342ec07e1a83cae966d81716e1d158398ed930c82322b61785f8ab38c84ec07efc91f7be523d872e3331e1a64ce81b20a8c899a82107fab9834add