[libpng] Strong cleanup of the port (#9198)

* [libpng] strong cleanup of the port

* [libpng] do not install unhandled tools

* [libpng] restore library proper name on windows-static triplets

ports/libpng/CONTROL

@@ -1,5 +1,5 @@
 Source: libpng
-Version: 1.6.37-5
+Version: 1.6.37-6
 Build-Depends: zlib
 Homepage: https://github.com/glennrp/libpng
 Description: libpng is a library implementing an interface for reading and writing PNG (Portable Network Graphics) format files.

ports/libpng/cmake.patch

@@ -0,0 +1,47 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 6451fcf..6599e1d 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -44,7 +44,7 @@ if(NOT PNG_BUILD_ZLIB)
+ endif()
+ 
+ if(UNIX AND NOT APPLE AND NOT BEOS AND NOT HAIKU)
+-  find_library(M_LIBRARY m)
++  set(M_LIBRARY m)
+ else()
+   # libm is not needed and/or not available
+   set(M_LIBRARY "")
+@@ -551,21 +551,14 @@ endif()
+ 
+ if(PNG_STATIC)
+   # does not work without changing name
+-  set(PNG_LIB_NAME_STATIC png_static)
+   add_library(png_static STATIC ${libpng_sources})
+   add_dependencies(png_static genfiles)
+   # MSVC doesn't use a different file extension for shared vs. static
+   # libs.  We are able to change OUTPUT_NAME to remove the _static
+   # for all other platforms.
+-  if(NOT MSVC)
+-    set_target_properties(png_static PROPERTIES
+-      OUTPUT_NAME "${PNG_LIB_NAME}"
+-      CLEAN_DIRECT_OUTPUT 1)
+-  else()
+-    set_target_properties(png_static PROPERTIES
+-      OUTPUT_NAME "${PNG_LIB_NAME}_static"
+-      CLEAN_DIRECT_OUTPUT 1)
+-  endif()
++  set_target_properties(png_static PROPERTIES
++    OUTPUT_NAME "${PNG_LIB_NAME}"
++    CLEAN_DIRECT_OUTPUT 1)
+   list(APPEND PNG_LIB_TARGETS png_static)
+   if(MSVC)
+     # msvc does not append 'lib' - do it here to have consistent name
+@@ -915,7 +908,7 @@ endif()
+ 
+ # Create an export file that CMake users can include() to import our targets.
+ if(NOT SKIP_INSTALL_EXPORT AND NOT SKIP_INSTALL_ALL)
+-  install(EXPORT libpng DESTINATION lib/libpng FILE lib${PNG_LIB_NAME}.cmake)
++  install(EXPORT libpng DESTINATION lib/libpng FILE libpngConfig.cmake)
+ endif()
+ 
+ # what's with libpng-manual.txt and all the extra files?

ports/libpng/fix-libm-unix.patch

@@ -1,12 +0,0 @@
-diff -ur a/CMakeLists.txt b/CMakeLists.txt
---- a/CMakeLists.txt	2019-04-14 20:10:32.000000000 +0200
-+++ b/CMakeLists.txt	2019-09-06 14:14:39.425498139 +0200
-@@ -44,7 +44,7 @@
- endif()
- 
- if(UNIX AND NOT APPLE AND NOT BEOS AND NOT HAIKU)
--  find_library(M_LIBRARY m)
-+  set(M_LIBRARY m)
- else()
-   # libm is not needed and/or not available
-   set(M_LIBRARY "")

ports/libpng/libpngConfig.cmake

@@ -1,6 +0,0 @@
-# The upstream CMakeLists.txt exports libpng's targets to a file named `libpng16.cmake`.
-# However, `find_package(libpng CONFIG)` expects a file named `libpngConfig.cmake` to exist instead.
-#
-# By including `libpng.cmake` from this file, `find_package(libpng CONFIG)` will work.
-get_filename_component(_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH)
-include("${_DIR}/libpng16.cmake")

ports/libpng/portfile.cmake

@@ -13,17 +13,17 @@ if ("apng" IN_LIST FEATURES)
             FILENAME "${LIBPNG_APG_PATCH_NAME}.gz"
             SHA512 226adcb3a8c60f2267fe2976ab531329ae43c2603dab4d0cf8f16217d64069936b879f3d6516b75d259c47d6f5c5b1f24f887602206c8e46abde0fb7f5c7946b
         )
-        
+
         vcpkg_find_acquire_program(7Z)
-    
+
         vcpkg_execute_required_process(
             COMMAND ${7Z} x ${LIBPNG_APNG_PATCH_ARCHIVE} -aoa
             WORKING_DIRECTORY ${CURRENT_BUILDTREES_DIR}/src
             LOGNAME extract-patch.log
         )
     endif()
-    
-    set(APNG_EXTRA_PATCH ${LIBPNG_APG_PATCH_PATH})    
+
+    set(APNG_EXTRA_PATCH ${LIBPNG_APG_PATCH_PATH})
     set(LIBPNG_APNG_OPTION "-DPNG_PREFIX=a")
 endif()
 
@@ -34,8 +34,8 @@ vcpkg_from_github(
     SHA512 ccb3705c23b2724e86d072e2ac8cfc380f41fadfd6977a248d588a8ad57b6abe0e4155e525243011f245e98d9b7afbe2e8cc7fd4ff7d82fcefb40c0f48f88918
     HEAD_REF master
     PATCHES
-        use-abort-on-all-platforms.patch
-        fix-libm-unix.patch
+        use_abort.patch
+        cmake.patch
         ${APNG_EXTRA_PATCH}
 )
 
@@ -58,37 +58,14 @@ vcpkg_configure_cmake(
         -DSKIP_INSTALL_PROGRAMS=ON
         -DSKIP_INSTALL_EXECUTABLES=ON
         -DSKIP_INSTALL_FILES=ON
-        -DSKIP_INSTALL_SYMLINK=ON
-    OPTIONS_DEBUG
-        -DSKIP_INSTALL_HEADERS=ON
+        OPTIONS_DEBUG
+            -DSKIP_INSTALL_HEADERS=ON
 )
 
 vcpkg_install_cmake()
 
 vcpkg_fixup_cmake_targets(CONFIG_PATH lib/libpng)
 
-if(VCPKG_LIBRARY_LINKAGE STREQUAL "static")
-    if(EXISTS ${CURRENT_PACKAGES_DIR}/lib/libpng16_static.lib)
-        file(RENAME ${CURRENT_PACKAGES_DIR}/lib/libpng16_static.lib ${CURRENT_PACKAGES_DIR}/lib/libpng16.lib)
-    endif()
-    if(EXISTS ${CURRENT_PACKAGES_DIR}/debug/lib/libpng16_staticd.lib)
-        file(RENAME ${CURRENT_PACKAGES_DIR}/debug/lib/libpng16_staticd.lib ${CURRENT_PACKAGES_DIR}/debug/lib/libpng16d.lib)
-    endif()
-
-    foreach(FILE ${CURRENT_PACKAGES_DIR}/share/libpng/libpng16-release.cmake ${CURRENT_PACKAGES_DIR}/share/libpng/libpng16-debug.cmake)
-        file(READ ${FILE} _contents)
-        string(REGEX REPLACE "libpng16_static.lib" "libpng16.lib" _contents "${_contents}")
-        string(REGEX REPLACE "libpng16_staticd.lib" "libpng16d.lib" _contents "${_contents}")
-        file(WRITE ${FILE} "${_contents}")
-    endforeach()
-endif()
-
-file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/share/)
-file(INSTALL ${CMAKE_CURRENT_LIST_DIR}/libpngConfig.cmake DESTINATION ${CURRENT_PACKAGES_DIR}/share/${PORT})
-
-if(NOT VCPKG_TARGET_IS_WINDOWS)
-    file(INSTALL ${CMAKE_CURRENT_LIST_DIR}/vcpkg-cmake-wrapper.cmake DESTINATION ${CURRENT_PACKAGES_DIR}/share/png)
-endif()
-
 vcpkg_copy_pdbs()
+
 file(INSTALL ${SOURCE_PATH}/LICENSE DESTINATION ${CURRENT_PACKAGES_DIR}/share/${PORT} RENAME copyright)

ports/libpng/skip-install-symlink.patch

@@ -1,22 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 48c6fa2..589e5f9 100644
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -853,7 +853,7 @@ if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
-           ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-           FRAMEWORK DESTINATION ${CMAKE_INSTALL_LIBDIR})
- 
--  if(PNG_SHARED)
-+  if(PNG_SHARED AND NOT SKIP_INSTALL_SYMLINK)
-     # Create a symlink for libpng.dll.a => libpng16.dll.a on Cygwin
-     if(CYGWIN OR MINGW)
-       create_symlink(libpng${CMAKE_IMPORT_LIBRARY_SUFFIX} TARGET png)
-@@ -868,7 +868,7 @@ if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
-     endif()
-   endif()
- 
--  if(PNG_STATIC)
-+  if(PNG_STATIC AND NOT SKIP_INSTALL_SYMLINK)
-     if(NOT WIN32 OR CYGWIN OR MINGW)
-       create_symlink(libpng${CMAKE_STATIC_LIBRARY_SUFFIX} TARGET png_static)
-       install(FILES $<TARGET_LINKER_FILE_DIR:png_static>/libpng${CMAKE_STATIC_LIBRARY_SUFFIX}

ports/libpng/use_abort.patch

@@ -1,8 +1,8 @@
 diff --git a/pngpriv.h b/pngpriv.h
-index fe3355d..5a049b5 100644
+index 583c26f..135651c 100644
 --- a/pngpriv.h
 +++ b/pngpriv.h
-@@ -457,11 +457,7 @@
+@@ -556,11 +556,7 @@
  
  /* Memory model/platform independent fns */
  #ifndef PNG_ABORT

ports/libpng/vcpkg-cmake-wrapper.cmake

@@ -1,6 +0,0 @@
-if(EXISTS "${CMAKE_CURRENT_LIST_DIR}/../../lib/libpng16.a")
-    set(PNG_LIBRARY_RELEASE "${CMAKE_CURRENT_LIST_DIR}/../../lib/libpng16.a" CACHE FILEPATH "")
-elseif(EXISTS "${CMAKE_CURRENT_LIST_DIR}/../../lib/libpng16${CMAKE_SHARED_LIBRARY_SUFFIX}")
-    set(PNG_LIBRARY_RELEASE "${CMAKE_CURRENT_LIST_DIR}/../../lib/libpng16${CMAKE_SHARED_LIBRARY_SUFFIX}" CACHE FILEPATH "")
-endif()
-_find_package(${ARGS})