--- libpng-1.6.38.orig/CMakeLists.txt	2022-09-14 16:42:00.000000000 -0300
+++ libpng-1.6.38/CMakeLists.txt	2022-09-15 10:09:48.728794541 -0300
@@ -932,7 +932,7 @@
 # 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})
@@ -1016,13 +1016,13 @@
   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 ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.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 ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc
-            DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
     install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
             DESTINATION ${CMAKE_INSTALL_BINDIR})
   endif()