--- libpng-1.6.49.orig/CMakeLists.txt	2025-06-12 14:05:46.000000000 -0300
+++ libpng-1.6.49/CMakeLists.txt	2025-06-16 13:45:00.743415714 -0300
@@ -1017,7 +1017,7 @@
 # We use the same files like ./configure, so we have to set its vars.
 # Only do this on Windows for Cygwin - the files don't make much sense
 # outside of a UNIX look-alike.
-if(NOT WIN32 OR CYGWIN OR MINGW)
+if(1)
   set(prefix "${CMAKE_INSTALL_PREFIX}")
   set(exec_prefix "${CMAKE_INSTALL_PREFIX}")
   set(libdir "${CMAKE_INSTALL_FULL_LIBDIR}")
@@ -1087,13 +1087,13 @@
   install(FILES png.5
           DESTINATION "${CMAKE_INSTALL_MANDIR}/man5")
   # Install the pkg-config files.
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc
+          DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}.pc
+          DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
   if(NOT CMAKE_HOST_WIN32 OR CYGWIN OR MINGW)
-    install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libpng.pc"
-            DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
     install(PROGRAMS "${CMAKE_CURRENT_BINARY_DIR}/libpng-config"
             DESTINATION "${CMAKE_INSTALL_BINDIR}")
-    install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}.pc"
-            DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
     install(PROGRAMS "${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}-config"
             DESTINATION "${CMAKE_INSTALL_BINDIR}")
   endif()