vcpkg/ports/graphviz/dependencies.diff

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b02632b1f..cce1f3e9b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -327,8 +327,8 @@ if(PkgConfig_FOUND)
       message(FATAL_ERROR "-DWITH_GDK=ON and GDK not found")
     endif()
   endif()
-  pkg_check_modules(GDK_PIXBUF gdk-pixbuf-2.0)
-  pkg_check_modules(LASI lasi)
+  set(GDK_PIXBUF_FOUND 0)
+  set(LASI_FOUND 0)
   if(AUTO_POPPLER)
     pkg_check_modules(POPPLER poppler-glib)
   elseif(WITH_POPPLER)
@@ -682,7 +682,13 @@ endif()
 
 if(UNIX)
   find_library(MATH_LIB m)
-  link_libraries(${MATH_LIB})
+  if(MATH_LIB)
+    set(MATH_LIB m CACHE INTERNAL "")
+    link_libraries(${MATH_LIB})
+    string(APPEND LIBGVC_PC_LIBS_PRIVATE " -lm")
+  else()
+    set(MATH_LIB "")
+  endif()
 endif()
 
 if(WIN32)
diff --git a/cmake/FindCAIRO.cmake b/cmake/FindCAIRO.cmake
index a6fdf8e3c..a4690653b 100644
--- a/cmake/FindCAIRO.cmake
+++ b/cmake/FindCAIRO.cmake
@@ -1,8 +1,11 @@
 include(FindPackageHandleStandardArgs)
 
 find_package(PkgConfig)
-pkg_check_modules(CAIRO cairo)
-if(MINGW)
+pkg_check_modules(CAIRO cairo IMPORTED_TARGET)
+if(CAIRO_FOUND)
+  set(CAIRO_LIBRARIES PkgConfig::CAIRO)
+  set(CAIRO_LINK_LIBRARIES PkgConfig::CAIRO)
+elseif(MINGW)
   find_program(CAIRO_RUNTIME_LIBRARY NAMES libcairo-2.dll)
   find_program(EXPAT_RUNTIME_LIBRARY NAMES libexpat-1.dll)
   find_program(FONTCONFIG_RUNTIME_LIBRARY NAMES libfontconfig-1.dll)
diff --git a/cmake/FindGD.cmake b/cmake/FindGD.cmake
index 49d372c37..2ed7e42af 100644
--- a/cmake/FindGD.cmake
+++ b/cmake/FindGD.cmake
@@ -1,3 +1,11 @@
+find_package(PkgConfig)
+pkg_check_modules(GD gdlib IMPORTED_TARGET)
+set(GD_LIBRARIES PkgConfig::GD)
+foreach(item IN ITEMS FONTCONFIG FREETYPE GIF JPEG PNG)
+  set(HAVE_GD_${item} 1)
+endforeach()
+return()
+
 find_path(GD_INCLUDE_DIR gd.h)
 find_library(GD_LIBRARY NAMES gd libgd)
 
diff --git a/cmake/FindGTS.cmake b/cmake/FindGTS.cmake
index bc1d5ea35..8114884a5 100644
--- a/cmake/FindGTS.cmake
+++ b/cmake/FindGTS.cmake
@@ -1,9 +1,11 @@
 include(FindPackageHandleStandardArgs)
 
 find_package(PkgConfig)
-pkg_check_modules(GTS gts)
+pkg_check_modules(GTS gts IMPORTED_TARGET)
 
-if(MINGW)
+if(GTS_FOUND)
+  set(GTS_LINK_LIBRARIES PkgConfig::GTS)
+elseif(MINGW)
   find_package(GLIB)
 
   find_program(GTS_RUNTIME_LIBRARY NAMES libgts-0-7-5.dll)
diff --git a/cmake/FindLTDL.cmake b/cmake/FindLTDL.cmake
index e74d23f52..42d9ae23c 100644
--- a/cmake/FindLTDL.cmake
+++ b/cmake/FindLTDL.cmake
@@ -20,4 +20,7 @@ mark_as_advanced(LTDL_INCLUDE_DIR LTDL_LIBRARY)
 set(LTDL_INCLUDE_DIRS ${LTDL_INCLUDE_DIR})
 if(NOT WIN32 OR MINGW)
   set(LTDL_LIBRARIES ${LTDL_LIBRARY})
+  if(CMAKE_DL_LIBS AND NOT BUILD_SHARED_LIBS)
+    set(LTDL_LIBRARIES "${LTDL_LIBRARIES};${CMAKE_DL_LIBS}")
+  endif()
 endif()
diff --git a/cmake/FindPANGOCAIRO.cmake b/cmake/FindPANGOCAIRO.cmake
index d185f0bf7..222789a96 100644
--- a/cmake/FindPANGOCAIRO.cmake
+++ b/cmake/FindPANGOCAIRO.cmake
@@ -1,9 +1,12 @@
 include(FindPackageHandleStandardArgs)
 find_package(PkgConfig)
 
-pkg_check_modules(PANGOCAIRO pangocairo)
+pkg_check_modules(PANGOCAIRO pangocairo IMPORTED_TARGET)
 
-if(MINGW)
+if(1)
+  set(PANGOCAIRO_LIBRARIES PkgConfig::PANGOCAIRO)
+  set(PANGOCAIRO_LINK_LIBRARIES PkgConfig::PANGOCAIRO) # https://gitlab.kitware.com/cmake/cmake/-/issues/16154
+elseif(MINGW)
   find_package(GLIB)
 
   find_program(GOBJECT_RUNTIME_LIBRARY NAMES libgobject-2.0-0.dll)
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 65a357678..e656b1228 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -59,3 +59,6 @@ if(BUILD_SHARED_LIBS)
     DESTINATION ${LIBRARY_INSTALL_DIR}/cmake/graphviz
   )
 endif()
+
+set(LIBGVC_PC_LIBS_PRIVATE "${LIBGVC_PC_LIBS_PRIVATE}" PARENT_SCOPE)
+set(LIBGVC_PC_REQUIRES_PRIVATE "${LIBGVC_PC_REQUIRES_PRIVATE}" PARENT_SCOPE)
diff --git a/lib/cgraph/libcgraph.pc.in b/lib/cgraph/libcgraph.pc.in
index 2b8c8f47b..168ce85f0 100644
--- a/lib/cgraph/libcgraph.pc.in
+++ b/lib/cgraph/libcgraph.pc.in
@@ -6,5 +6,6 @@ includedir=@includedir@
 Name: libcgraph
 Description: Graph library (file i/o, dot language parsing, graph, subgraph, node, edge, attribute, data structure manipulation)
 Version: @VERSION@
+Libs.private: -lutil
 Libs: -L${libdir} -lcgraph -lcdt
 Cflags: -I${includedir} -I${includedir}/@PACKAGE@
diff --git a/lib/common/CMakeLists.txt b/lib/common/CMakeLists.txt
index 3b0e469f4..265de0354 100644
--- a/lib/common/CMakeLists.txt
+++ b/lib/common/CMakeLists.txt
@@ -136,6 +136,9 @@ if(EXPAT_FOUND)
     ${EXPAT_LIBRARIES}
   )
 endif()
+if(EXPAT_FOUND)
+  string(APPEND LIBGVC_PC_REQUIRES_PRIVATE " expat")
+endif()
 
 # Specify headers to be installed
 install(
@@ -148,3 +151,5 @@ install(
     usershape.h
   DESTINATION ${HEADER_INSTALL_DIR}
 )
+
+set(LIBGVC_PC_REQUIRES_PRIVATE "${LIBGVC_PC_REQUIRES_PRIVATE}" PARENT_SCOPE)
diff --git a/lib/gvc/CMakeLists.txt b/lib/gvc/CMakeLists.txt
index 11dba53f3..1d54de861 100644
--- a/lib/gvc/CMakeLists.txt
+++ b/lib/gvc/CMakeLists.txt
@@ -70,12 +70,17 @@ if(LTDL_FOUND)
   target_include_directories(gvc SYSTEM PRIVATE ${LTDL_INCLUDE_DIRS})
   if(NOT WIN32 OR MINGW)
     target_link_libraries(gvc PUBLIC ${LTDL_LIBRARIES})
+    string(APPEND LIBGVC_PC_LIBS_PRIVATE " -lltdl")
+    if(CMAKE_DL_LIBS STREQUAL "dl")
+      string(APPEND LIBGVC_PC_LIBS_PRIVATE " -ldl")
+    endif()
   endif()
 endif()
 
 if(ZLIB_FOUND)
   target_include_directories(gvc SYSTEM PRIVATE ${ZLIB_INCLUDE_DIRS})
   target_link_libraries(gvc PUBLIC ${ZLIB_LIBRARIES})
+  string(APPEND LIBGVC_PC_REQUIRES_PRIVATE " zlib")
 endif()
 
 if(with_ortho)
@@ -152,3 +157,6 @@ if(WIN32 AND ZLIB_FOUND AND install_win_dependency_dlls)
     DESTINATION ${BINARY_INSTALL_DIR}
   )
 endif()
+
+set(LIBGVC_PC_LIBS_PRIVATE "${LIBGVC_PC_LIBS_PRIVATE}" PARENT_SCOPE)
+set(LIBGVC_PC_REQUIRES_PRIVATE "${LIBGVC_PC_REQUIRES_PRIVATE} libpathplan libxdot" PARENT_SCOPE)
diff --git a/lib/gvc/libgvc.pc.in b/lib/gvc/libgvc.pc.in
index f12b472e1..9b89519f8 100644
--- a/lib/gvc/libgvc.pc.in
+++ b/lib/gvc/libgvc.pc.in
@@ -7,6 +7,8 @@ plugins=@GVPLUGIN_VERSION@
 Name: libgvc
 Description: The GraphVizContext library 
 Version: @VERSION@
+Requires.private: @LIBGVC_PC_REQUIRES_PRIVATE@
+Libs.private: @LIBGVC_PC_LIBS_PRIVATE@ -lutil
 Libs: -L${libdir} -lgvc -lcgraph -lcdt
 Cflags: -I${includedir} -I${includedir}/@PACKAGE@