diff --git a/CMakeLists.txt b/CMakeLists.txt
index e6571c6..d7303ee 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -46,13 +46,13 @@ enable_testing( )
 
 ##### optional stuff
 
-option( WITH_ALL_OPTIONS "Enable all optional support" OFF                                          )
+option( WITH_ALL_OPTIONS    "Enable all optional support" OFF )
 option( WITH_GCC_VISIBILITY "Enable fvisibility and fvisibility-inlines-hidden" ${WITH_ALL_OPTIONS} )
 
 
 ##### user requested modules
 
-option( BUILD_ALL "Build all" ON                     )
+option( BUILD_ALL "Build all" ON )
 option( BUILD_DOC "Build documentation" ${BUILD_ALL} )
 
 
@@ -70,171 +70,12 @@ set( CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--no-undefined"
 set( CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,--no-undefined" )
 
 
+##### directories
+
+add_subdirectory( src )
+tde_conditional_add_subdirectory( BUILD_DOC doc )
+
+
 ##### write configure files
 
 configure_file( config.h.cmake config.h @ONLY )
-configure_file( art_config.h.cmake art_config.h @ONLY )
-configure_file( libart-features.h.cmake libart-features.h @ONLY )
-
-
-include_directories(
-  ${CMAKE_BINARY_DIR}
-  ${CMAKE_CURRENT_BINARY_DIR}
-  ${CMAKE_CURRENT_SOURCE_DIR}
-)
-
-
-##### art_lgpl_2
-
-set( _SRCS art_affine.c art_alphagamma.c
-           art_bpath.c art_gray_svp.c
-           art_misc.c art_pixbuf.c
-           art_rect.c art_rect_svp.c
-           art_rect_uta.c art_render.c
-           art_render_gradient.c art_render_mask.c
-           art_render_svp.c art_rgb.c
-           art_rgb_affine.c art_rgb_affine_private.c
-           art_rgb_bitmap_affine.c art_rgb_pixbuf_affine.c
-           art_rgb_rgba_affine.c art_rgb_a_affine.c
-           art_rgba.c art_rgb_svp.c
-           art_svp.c art_svp_intersect.c
-           art_svp_ops.c art_svp_point.c
-           art_svp_render_aa.c art_svp_vpath.c
-           art_svp_vpath_stroke.c art_svp_wind.c
-           art_uta.c art_uta_ops.c
-           art_uta_rect.c art_uta_vpath.c
-           art_uta_svp.c art_vpath.c
-           art_vpath_bpath.c art_vpath_dash.c
-           art_vpath_svp.c libart-features.c
-)
-
-## shared
-
-tde_add_library( art_lgpl_2 SHARED
-
-  SOURCES
-        ${_SRCS}
-  LINK
-      m
-
-  VERSION ${LIBART_VERSION}
-
-  DESTINATION ${LIB_INSTALL_DIR}
-)
-
-## static
-
-tde_add_library( art_lgpl_2 STATIC_PIC
-
-  SOURCES
-        ${_SRCS}
-  LINK
-      m
-
-  VERSION ${LIBART_VERSION}
-
-  DESTINATION ${LIB_INSTALL_DIR}
-)
-
-
-## tests
-
-tde_add_check_executable( testart
-    SOURCES
-        testart.c
-
-    LINK
-        art_lgpl_2-shared
-        m
-)
-add_test(
-    NAME testart-testpat
-    COMMAND testart testpat
-)
-#-- the testart-gradient often ends at sigsegv
-#add_test(
-#    NAME testart-gradient
-#    COMMAND testart gradient
-#)
-add_test(
-    NAME testart-dash
-    COMMAND testart dash
-)
-add_test(
-    NAME testart-dist
-    COMMAND testart dist
-)
-add_test(
-    NAME testart-intersect
-    COMMAND testart intersect
-)
-
-
-tde_add_check_executable( testuta
-    SOURCES
-        testuta.c
-
-    LINK
-        art_lgpl_2-shared
-        m
-
-    TEST
-)
-
-
-##### Headers
-
-set( _headers art_affine.h art_alphagamma.h
-              art_bpath.h
-              art_filterlevel.h art_gray_svp.h
-              art_misc.h art_pathcode.h art_pixbuf.h
-              art_point.h art_rect.h art_rect_svp.h
-              art_rect_uta.h art_render.h
-              art_render_gradient.h art_render_mask.h
-              art_render_svp.h art_rgb.h
-              art_rgb_affine.h art_rgb_bitmap_affine.h
-              art_rgb_pixbuf_affine.h art_rgb_rgba_affine.h
-              art_rgb_a_affine.h art_rgb_svp.h
-              art_rgba.h art_svp.h
-              art_svp_intersect.h art_svp_ops.h
-              art_svp_point.h art_svp_render_aa.h
-              art_svp_vpath.h art_svp_vpath_stroke.h
-              art_svp_wind.h art_uta.h
-              art_uta_ops.h art_uta_rect.h
-              art_uta_vpath.h art_uta_svp.h
-              art_vpath.h art_vpath_bpath.h
-              art_vpath_dash.h art_vpath_svp.h
-              libart.h
-              ${CMAKE_CURRENT_BINARY_DIR}/art_config.h
-              ${CMAKE_CURRENT_BINARY_DIR}/libart-features.h
-)
-
-install(
-    FILES ${_headers}
-    DESTINATION ${INCLUDE_INSTALL_DIR}/libart-2.0/libart_lgpl
-)
-
-
-#### pkg-config
-
-set( prefix ${CMAKE_INSTALL_PREFIX} )
-string( REGEX REPLACE "^${CMAKE_INSTALL_PREFIX}" "\${prefix}" exec_prefix ${EXEC_INSTALL_PREFIX} )
-string( REGEX REPLACE "^${CMAKE_INSTALL_PREFIX}" "\${prefix}" includedir ${INCLUDE_INSTALL_DIR}  )
-string( REGEX REPLACE "^${CMAKE_INSTALL_PREFIX}" "\${prefix}" libdir ${LIB_INSTALL_DIR}          )
-
-configure_file( libart-2.0.pc.cmake  libart-2.0.pc  @ONLY )
-
-install(
-    FILES ${CMAKE_CURRENT_BINARY_DIR}/libart-2.0.pc
-    DESTINATION ${PKGCONFIG_INSTALL_DIR}
-)
-
-install(
-    PROGRAMS libart2-config
-    DESTINATION ${BIN_INSTALL_DIR}
-)
-
-
-##### man page
-
-tde_conditional_add_subdirectory( BUILD_DOC doc )
diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
index 11daccd..c536d41 100644
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -50,3 +50,8 @@ else( )
     tde_message_fatal( "sizeof(int) != 4 and sizeof(long) != 4" )
   endif( )
 endif( )
+
+
+##### check for the math libc
+
+find_library( MATH_LIBC m )
diff --git a/INSTALL b/INSTALL
new file mode 100644
index 0000000..24aa3c5
--- /dev/null
+++ b/INSTALL
@@ -0,0 +1,11 @@
+Basic Installation
+==================
+
+libart-lgpl relies on cmake to build.
+
+Here are suggested default options:
+
+ -DCMAKE_SKIP_RPATH="OFF" \
+ -DCMAKE_VERBOSE_MAKEFILE="ON" \
+ -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+ -DWITH_ALL_OPTIONS="ON"
diff --git a/README b/README
index dc912f9..ad845df 100644
--- a/README
+++ b/README
@@ -1,21 +1,15 @@
-This is the LGPL'd component of libart. All functions needed for
-running the Gnome canvas, and for printing support, will be going in
-here. The GPL'd component will be getting various enhanced functions
-for specific applications.
 
-Libart is free software. It is also for sale. For information about
-licensing libart, please contact Raph Levien
-<raph@acm.org>. Contributions to the codebase are also very welcome,
-but the copyright must be assigned in writing to preserve the
-licensing flexibility.
+ libart-lgpl - a 2D graphics library
 
 
-For more information about libart, see the web page:
+Libart-lgpl is a library of functions for 2D graphics supporting a
+superset of the PostScript imaging model, designed to be integrated with
+graphics, artwork and illustration programs.
+It is written in optimized C and is fully compatible with C++.
+With a small footprint of 10,000 lines of code, it is especially suitable
+for embedded applications.
 
-   http://www.levien.com/libart/
 
-There's also a libart tutorial available at
-http://www.gnome.org/~mathieu/libart/libart.html
 
 ======================================================================
 
@@ -31,3 +25,24 @@ above, as patch copyright has NOT been transferred to the original
 author and we have no plans to do so.
 
 ======================================================================
+
+
+For more information about libart, see the web page:
+
+   http://www.levien.com/libart/
+
+There's also a libart tutorial available at
+http://www.gnome.org/~mathieu/libart/libart.html
+
+
+
+CONTRIBUTING
+==============
+
+If you wish to contribute to libart-lgpl, you might do so:
+
+- TDE Gitea Workspace (TGW) collaboration tool.
+  https://mirror.git.trinitydesktop.org/gitea
+
+- TDE Weblate Translation Workspace (TWTW) collaboration tool.
+  https://mirror.git.trinitydesktop.org/weblate
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
new file mode 100644
index 0000000..d088cf9
--- /dev/null
+++ b/src/CMakeLists.txt
@@ -0,0 +1,172 @@
+include_directories(
+  ${CMAKE_BINARY_DIR}
+  ${CMAKE_CURRENT_BINARY_DIR}
+  ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+
+##### write configure files
+
+configure_file( art_config.h.cmake art_config.h @ONLY )
+configure_file( libart-features.h.cmake libart-features.h @ONLY )
+
+
+##### src
+
+set( _SRCS art_affine.c art_alphagamma.c
+           art_bpath.c art_gray_svp.c
+           art_misc.c art_pixbuf.c
+           art_rect.c art_rect_svp.c
+           art_rect_uta.c art_render.c
+           art_render_gradient.c art_render_mask.c
+           art_render_svp.c art_rgb.c
+           art_rgb_affine.c art_rgb_affine_private.c
+           art_rgb_bitmap_affine.c art_rgb_pixbuf_affine.c
+           art_rgb_rgba_affine.c art_rgb_a_affine.c
+           art_rgba.c art_rgb_svp.c
+           art_svp.c art_svp_intersect.c
+           art_svp_ops.c art_svp_point.c
+           art_svp_render_aa.c art_svp_vpath.c
+           art_svp_vpath_stroke.c art_svp_wind.c
+           art_uta.c art_uta_ops.c
+           art_uta_rect.c art_uta_vpath.c
+           art_uta_svp.c art_vpath.c
+           art_vpath_bpath.c art_vpath_dash.c
+           art_vpath_svp.c libart-features.c
+)
+
+
+## shared
+
+tde_add_library( art_lgpl_2 SHARED
+
+  SOURCES
+        ${_SRCS}
+  LINK
+     ${MATH_LIBC}
+
+  VERSION ${LIBART_VERSION}
+
+  DESTINATION ${LIB_INSTALL_DIR}
+)
+
+
+## static
+
+tde_add_library( art_lgpl_2 STATIC_PIC
+
+  SOURCES
+        ${_SRCS}
+  LINK
+     ${MATH_LIBC}
+
+  VERSION ${LIBART_VERSION}
+
+  DESTINATION ${LIB_INSTALL_DIR}
+)
+
+
+## tests
+
+tde_add_check_executable( testart
+
+    SOURCES
+        testart.c
+
+    LINK
+        art_lgpl_2-shared
+        ${MATH_LIBC}
+)
+
+add_test(
+    NAME testart-testpat
+    COMMAND testart testpat
+)
+
+#-- the testart-gradient often ends at sigsegv
+#add_test(
+#    NAME testart-gradient
+#    COMMAND testart gradient
+#)
+
+add_test(
+    NAME testart-dash
+    COMMAND testart dash
+)
+
+add_test(
+    NAME testart-dist
+    COMMAND testart dist
+)
+
+add_test(
+    NAME testart-intersect
+    COMMAND testart intersect
+)
+
+tde_add_check_executable( testuta
+    SOURCES
+        testuta.c
+
+    LINK
+        art_lgpl_2-shared
+        ${MATH_LIBC}
+
+    TEST
+)
+
+
+##### Headers
+
+set( _headers art_affine.h art_alphagamma.h
+              art_bpath.h
+              art_filterlevel.h art_gray_svp.h
+              art_misc.h art_pathcode.h art_pixbuf.h
+              art_point.h art_rect.h art_rect_svp.h
+              art_rect_uta.h art_render.h
+              art_render_gradient.h art_render_mask.h
+              art_render_svp.h art_rgb.h
+              art_rgb_affine.h art_rgb_bitmap_affine.h
+              art_rgb_pixbuf_affine.h art_rgb_rgba_affine.h
+              art_rgb_a_affine.h art_rgb_svp.h
+              art_rgba.h art_svp.h
+              art_svp_intersect.h art_svp_ops.h
+              art_svp_point.h art_svp_render_aa.h
+              art_svp_vpath.h art_svp_vpath_stroke.h
+              art_svp_wind.h art_uta.h
+              art_uta_ops.h art_uta_rect.h
+              art_uta_vpath.h art_uta_svp.h
+              art_vpath.h art_vpath_bpath.h
+              art_vpath_dash.h art_vpath_svp.h
+              libart.h
+              ${CMAKE_CURRENT_BINARY_DIR}/art_config.h
+              ${CMAKE_CURRENT_BINARY_DIR}/libart-features.h
+)
+
+install(
+    FILES ${_headers}
+    DESTINATION ${INCLUDE_INSTALL_DIR}/libart-2.0/libart_lgpl
+)
+
+
+#### pkg-config
+
+set( prefix ${CMAKE_INSTALL_PREFIX} )
+string( REGEX REPLACE "^${CMAKE_INSTALL_PREFIX}" "\${prefix}" exec_prefix ${EXEC_INSTALL_PREFIX} )
+string( REGEX REPLACE "^${CMAKE_INSTALL_PREFIX}" "\${prefix}" includedir ${INCLUDE_INSTALL_DIR}  )
+string( REGEX REPLACE "^${CMAKE_INSTALL_PREFIX}" "\${prefix}" libdir ${LIB_INSTALL_DIR}          )
+
+configure_file( libart-2.0.pc.cmake  libart-2.0.pc  @ONLY )
+
+install(
+    FILES ${CMAKE_CURRENT_BINARY_DIR}/libart-2.0.pc
+    DESTINATION ${PKGCONFIG_INSTALL_DIR}
+)
+
+
+##### config helper
+
+install(
+    PROGRAMS libart2-config
+    DESTINATION ${BIN_INSTALL_DIR}
+)
diff --git a/art_affine.c b/src/art_affine.c
similarity index 100%
rename from art_affine.c
rename to src/art_affine.c
diff --git a/art_affine.h b/src/art_affine.h
similarity index 100%
rename from art_affine.h
rename to src/art_affine.h
diff --git a/art_alphagamma.c b/src/art_alphagamma.c
similarity index 100%
rename from art_alphagamma.c
rename to src/art_alphagamma.c
diff --git a/art_alphagamma.h b/src/art_alphagamma.h
similarity index 100%
rename from art_alphagamma.h
rename to src/art_alphagamma.h
diff --git a/art_bpath.c b/src/art_bpath.c
similarity index 100%
rename from art_bpath.c
rename to src/art_bpath.c
diff --git a/art_bpath.h b/src/art_bpath.h
similarity index 100%
rename from art_bpath.h
rename to src/art_bpath.h
diff --git a/art_config.h.cmake b/src/art_config.h.cmake
similarity index 100%
rename from art_config.h.cmake
rename to src/art_config.h.cmake
diff --git a/art_filterlevel.h b/src/art_filterlevel.h
similarity index 100%
rename from art_filterlevel.h
rename to src/art_filterlevel.h
diff --git a/art_gray_svp.c b/src/art_gray_svp.c
similarity index 100%
rename from art_gray_svp.c
rename to src/art_gray_svp.c
diff --git a/art_gray_svp.h b/src/art_gray_svp.h
similarity index 100%
rename from art_gray_svp.h
rename to src/art_gray_svp.h
diff --git a/art_misc.c b/src/art_misc.c
similarity index 100%
rename from art_misc.c
rename to src/art_misc.c
diff --git a/art_misc.h b/src/art_misc.h
similarity index 100%
rename from art_misc.h
rename to src/art_misc.h
diff --git a/art_pathcode.h b/src/art_pathcode.h
similarity index 100%
rename from art_pathcode.h
rename to src/art_pathcode.h
diff --git a/art_pixbuf.c b/src/art_pixbuf.c
similarity index 100%
rename from art_pixbuf.c
rename to src/art_pixbuf.c
diff --git a/art_pixbuf.h b/src/art_pixbuf.h
similarity index 100%
rename from art_pixbuf.h
rename to src/art_pixbuf.h
diff --git a/art_point.h b/src/art_point.h
similarity index 100%
rename from art_point.h
rename to src/art_point.h
diff --git a/art_rect.c b/src/art_rect.c
similarity index 100%
rename from art_rect.c
rename to src/art_rect.c
diff --git a/art_rect.h b/src/art_rect.h
similarity index 100%
rename from art_rect.h
rename to src/art_rect.h
diff --git a/art_rect_svp.c b/src/art_rect_svp.c
similarity index 100%
rename from art_rect_svp.c
rename to src/art_rect_svp.c
diff --git a/art_rect_svp.h b/src/art_rect_svp.h
similarity index 100%
rename from art_rect_svp.h
rename to src/art_rect_svp.h
diff --git a/art_rect_uta.c b/src/art_rect_uta.c
similarity index 100%
rename from art_rect_uta.c
rename to src/art_rect_uta.c
diff --git a/art_rect_uta.h b/src/art_rect_uta.h
similarity index 100%
rename from art_rect_uta.h
rename to src/art_rect_uta.h
diff --git a/art_render.c b/src/art_render.c
similarity index 100%
rename from art_render.c
rename to src/art_render.c
diff --git a/art_render.h b/src/art_render.h
similarity index 100%
rename from art_render.h
rename to src/art_render.h
diff --git a/art_render_gradient.c b/src/art_render_gradient.c
similarity index 100%
rename from art_render_gradient.c
rename to src/art_render_gradient.c
diff --git a/art_render_gradient.h b/src/art_render_gradient.h
similarity index 100%
rename from art_render_gradient.h
rename to src/art_render_gradient.h
diff --git a/art_render_mask.c b/src/art_render_mask.c
similarity index 100%
rename from art_render_mask.c
rename to src/art_render_mask.c
diff --git a/art_render_mask.h b/src/art_render_mask.h
similarity index 100%
rename from art_render_mask.h
rename to src/art_render_mask.h
diff --git a/art_render_svp.c b/src/art_render_svp.c
similarity index 100%
rename from art_render_svp.c
rename to src/art_render_svp.c
diff --git a/art_render_svp.h b/src/art_render_svp.h
similarity index 100%
rename from art_render_svp.h
rename to src/art_render_svp.h
diff --git a/art_rgb.c b/src/art_rgb.c
similarity index 100%
rename from art_rgb.c
rename to src/art_rgb.c
diff --git a/art_rgb.h b/src/art_rgb.h
similarity index 100%
rename from art_rgb.h
rename to src/art_rgb.h
diff --git a/art_rgb_a_affine.c b/src/art_rgb_a_affine.c
similarity index 100%
rename from art_rgb_a_affine.c
rename to src/art_rgb_a_affine.c
diff --git a/art_rgb_a_affine.h b/src/art_rgb_a_affine.h
similarity index 100%
rename from art_rgb_a_affine.h
rename to src/art_rgb_a_affine.h
diff --git a/art_rgb_affine.c b/src/art_rgb_affine.c
similarity index 100%
rename from art_rgb_affine.c
rename to src/art_rgb_affine.c
diff --git a/art_rgb_affine.h b/src/art_rgb_affine.h
similarity index 100%
rename from art_rgb_affine.h
rename to src/art_rgb_affine.h
diff --git a/art_rgb_affine_private.c b/src/art_rgb_affine_private.c
similarity index 100%
rename from art_rgb_affine_private.c
rename to src/art_rgb_affine_private.c
diff --git a/art_rgb_affine_private.h b/src/art_rgb_affine_private.h
similarity index 100%
rename from art_rgb_affine_private.h
rename to src/art_rgb_affine_private.h
diff --git a/art_rgb_bitmap_affine.c b/src/art_rgb_bitmap_affine.c
similarity index 100%
rename from art_rgb_bitmap_affine.c
rename to src/art_rgb_bitmap_affine.c
diff --git a/art_rgb_bitmap_affine.h b/src/art_rgb_bitmap_affine.h
similarity index 100%
rename from art_rgb_bitmap_affine.h
rename to src/art_rgb_bitmap_affine.h
diff --git a/art_rgb_pixbuf_affine.c b/src/art_rgb_pixbuf_affine.c
similarity index 100%
rename from art_rgb_pixbuf_affine.c
rename to src/art_rgb_pixbuf_affine.c
diff --git a/art_rgb_pixbuf_affine.h b/src/art_rgb_pixbuf_affine.h
similarity index 100%
rename from art_rgb_pixbuf_affine.h
rename to src/art_rgb_pixbuf_affine.h
diff --git a/art_rgb_rgba_affine.c b/src/art_rgb_rgba_affine.c
similarity index 100%
rename from art_rgb_rgba_affine.c
rename to src/art_rgb_rgba_affine.c
diff --git a/art_rgb_rgba_affine.h b/src/art_rgb_rgba_affine.h
similarity index 100%
rename from art_rgb_rgba_affine.h
rename to src/art_rgb_rgba_affine.h
diff --git a/art_rgb_svp.c b/src/art_rgb_svp.c
similarity index 100%
rename from art_rgb_svp.c
rename to src/art_rgb_svp.c
diff --git a/art_rgb_svp.h b/src/art_rgb_svp.h
similarity index 100%
rename from art_rgb_svp.h
rename to src/art_rgb_svp.h
diff --git a/art_rgba.c b/src/art_rgba.c
similarity index 100%
rename from art_rgba.c
rename to src/art_rgba.c
diff --git a/art_rgba.h b/src/art_rgba.h
similarity index 100%
rename from art_rgba.h
rename to src/art_rgba.h
diff --git a/art_svp.c b/src/art_svp.c
similarity index 100%
rename from art_svp.c
rename to src/art_svp.c
diff --git a/art_svp.h b/src/art_svp.h
similarity index 100%
rename from art_svp.h
rename to src/art_svp.h
diff --git a/art_svp_intersect.c b/src/art_svp_intersect.c
similarity index 100%
rename from art_svp_intersect.c
rename to src/art_svp_intersect.c
diff --git a/art_svp_intersect.h b/src/art_svp_intersect.h
similarity index 100%
rename from art_svp_intersect.h
rename to src/art_svp_intersect.h
diff --git a/art_svp_ops.c b/src/art_svp_ops.c
similarity index 100%
rename from art_svp_ops.c
rename to src/art_svp_ops.c
diff --git a/art_svp_ops.h b/src/art_svp_ops.h
similarity index 100%
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