diff --git a/CMakeLists.txt b/CMakeLists.txt
index 89c3a105a..4fc7508c3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -476,20 +476,16 @@ else()
                  NEWLINE_STYLE LF)
 
   # Generate scripts/pnglibconf.h
-  generate_source(OUTPUT "scripts/pnglibconf.c"
+  generate_source(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c"
                   DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa"
                           "${CMAKE_CURRENT_BINARY_DIR}/scripts/options.awk"
                           "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h")
-  add_custom_target(png_scripts_pnglibconf_c
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c")
 
   # Generate pnglibconf.c
-  generate_source(OUTPUT "pnglibconf.c"
+  generate_source(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c"
                   DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa"
                           "${CMAKE_CURRENT_BINARY_DIR}/scripts/options.awk"
                           "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h")
-  add_custom_target(pnglibconf_c
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c")
 
   if(PNG_PREFIX)
     set(PNGLIBCONF_H_EXTRA_DEPENDS
@@ -500,85 +496,53 @@ else()
   endif()
 
   generate_out(INPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c"
-               OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out"
-               DEPENDS pnglibconf_c)
-  add_custom_target(pnglibconf_out
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out")
+               OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out")
 
   # Generate pnglibconf.h
-  generate_source(OUTPUT "pnglibconf.h"
+  generate_source(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
                   DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out"
-                          pnglibconf_out
                           ${PNGLIBCONF_H_EXTRA_DEPENDS})
-  add_custom_target(pnglibconf_h
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h")
 
   generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/intprefix.c"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out"
-               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
-                       pnglibconf_h)
-  add_custom_target(png_scripts_intprefix_out
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out")
+               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h")
 
   generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/prefix.c"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out"
                DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h"
                        "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h"
-                       "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out"
-                       pnglibconf_out)
-  add_custom_target(png_scripts_prefix_out
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out")
+                       "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out")
 
   # Generate pngprefix.h
-  generate_source(OUTPUT "pngprefix.h"
+  generate_source(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h"
                   DEPENDS ${PNGPREFIX_H_EXTRA_DEPENDS})
-  add_custom_target(pngprefix_h
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h")
 
   generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/sym.c"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
-               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
-                       pnglibconf_h)
-  add_custom_target(png_scripts_sym_out
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out")
+               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h")
 
   generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/symbols.c"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out"
                DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h"
                        "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h"
                        "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt")
-  add_custom_target(png_scripts_symbols_out
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out")
 
   generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/vers.c"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out"
                DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h"
                        "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h"
-                       "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
-                       pnglibconf_h)
-  add_custom_target(png_scripts_vers_out
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out")
+                       "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h")
 
   generate_chk(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk"
-               DEPENDS png_scripts_symbols_out
-                       "${CMAKE_CURRENT_BINARY_DIR}/scripts/checksym.awk"
+               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/checksym.awk"
                        "${CMAKE_CURRENT_SOURCE_DIR}/scripts/symbols.def")
 
-  add_custom_target(png_scripts_symbols_chk
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk")
-
   generate_copy(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
-                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym"
-                DEPENDS png_scripts_sym_out)
-  generate_copy(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out"
-                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers"
-                DEPENDS png_scripts_vers_out)
+                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym")
 
-  add_custom_target(png_genvers
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers")
-  add_custom_target(png_gensym
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym")
+  generate_copy(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out"
+                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers")
 
   add_custom_target(png_genprebuilt
                     COMMAND "${CMAKE_COMMAND}"
@@ -589,31 +553,18 @@ else()
   # A single target handles generation of all generated files.
   add_custom_target(png_genfiles
                     DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym"
-                            png_gensym
                             "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers"
-                            png_genvers
                             "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c"
-                            pnglibconf_c
                             "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
-                            pnglibconf_h
                             "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out"
-                            pnglibconf_out
                             "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h"
-                            pngprefix_h
                             "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out"
-                            png_scripts_intprefix_out
                             "${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c"
-                            png_scripts_pnglibconf_c
                             "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out"
-                            png_scripts_prefix_out
                             "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
-                            png_scripts_sym_out
                             "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk"
-                            png_scripts_symbols_chk
                             "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out"
-                            png_scripts_symbols_out
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out"
-                            png_scripts_vers_out)
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out")
 endif()
 
 # List the source code files.
diff --git a/scripts/cmake/PNGGenConfig.cmake b/scripts/cmake/PNGGenConfig.cmake
index 4a0030edd..dd66b9113 100644
--- a/scripts/cmake/PNGGenConfig.cmake
+++ b/scripts/cmake/PNGGenConfig.cmake
@@ -18,21 +18,21 @@ function(generate_chk)
   set(options)
   set(oneValueArgs INPUT OUTPUT)
   set(multiValueArgs DEPENDS)
-  cmake_parse_arguments(_GC "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
-  if(NOT _GC_INPUT)
+  cmake_parse_arguments(_GENCHK "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
+  if(NOT _GENCHK_INPUT)
     message(FATAL_ERROR "generate_chk: Missing INPUT argument")
   endif()
-  if(NOT _GC_OUTPUT)
+  if(NOT _GENCHK_OUTPUT)
     message(FATAL_ERROR "generate_chk: Missing OUTPUT argument")
   endif()
 
   # Run genchk.cmake to generate the .chk file.
-  add_custom_command(OUTPUT "${_GC_OUTPUT}"
+  add_custom_command(OUTPUT "${_GENCHK_OUTPUT}"
                      COMMAND "${CMAKE_COMMAND}"
-                             "-DINPUT=${_GC_INPUT}"
-                             "-DOUTPUT=${_GC_OUTPUT}"
+                             "-DINPUT=${_GENCHK_INPUT}"
+                             "-DOUTPUT=${_GENCHK_OUTPUT}"
                              -P "${CMAKE_CURRENT_BINARY_DIR}/scripts/cmake/genchk.cmake"
-                     DEPENDS "${_GC_INPUT}" ${_GC_DEPENDS}
+                     DEPENDS "${_GENCHK_INPUT}" ${_GENCHK_DEPENDS}
                      WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
 endfunction()
 
@@ -42,21 +42,21 @@ function(generate_out)
   set(options)
   set(oneValueArgs INPUT OUTPUT)
   set(multiValueArgs DEPENDS)
-  cmake_parse_arguments(_GO "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
-  if(NOT _GO_INPUT)
+  cmake_parse_arguments(_GENOUT "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
+  if(NOT _GENOUT_INPUT)
     message(FATAL_ERROR "generate_out: Missing INPUT argument")
   endif()
-  if(NOT _GO_OUTPUT)
+  if(NOT _GENOUT_OUTPUT)
     message(FATAL_ERROR "generate_out: Missing OUTPUT argument")
   endif()
 
   # Run genout.cmake to generate the .out file.
-  add_custom_command(OUTPUT "${_GO_OUTPUT}"
+  add_custom_command(OUTPUT "${_GENOUT_OUTPUT}"
                      COMMAND "${CMAKE_COMMAND}"
-                             "-DINPUT=${_GO_INPUT}"
-                             "-DOUTPUT=${_GO_OUTPUT}"
+                             "-DINPUT=${_GENOUT_INPUT}"
+                             "-DOUTPUT=${_GENOUT_OUTPUT}"
                              -P "${CMAKE_CURRENT_BINARY_DIR}/scripts/cmake/genout.cmake"
-                     DEPENDS "${_GO_INPUT}" ${_GO_DEPENDS}
+                     DEPENDS "${_GENOUT_INPUT}" ${_GENOUT_DEPENDS}
                      WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
 endfunction()
 
@@ -66,17 +66,17 @@ function(generate_source)
   set(options)
   set(oneValueArgs OUTPUT)
   set(multiValueArgs DEPENDS)
-  cmake_parse_arguments(_GSO "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
-  if(NOT _GSO_OUTPUT)
+  cmake_parse_arguments(_GENSRC "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
+  if(NOT _GENSRC_OUTPUT)
     message(FATAL_ERROR "generate_source: Missing OUTPUT argument")
   endif()
 
   # Run gensrc.cmake to generate the source file.
-  add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${_GSO_OUTPUT}"
+  add_custom_command(OUTPUT "${_GENSRC_OUTPUT}"
                      COMMAND "${CMAKE_COMMAND}"
-                             "-DOUTPUT=${_GSO_OUTPUT}"
+                             "-DOUTPUT=${_GENSRC_OUTPUT}"
                              -P "${CMAKE_CURRENT_BINARY_DIR}/scripts/cmake/gensrc.cmake"
-                     DEPENDS ${_GSO_DEPENDS}
+                     DEPENDS ${_GENSRC_DEPENDS}
                      WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
 endfunction()
 
@@ -86,19 +86,19 @@ function(generate_copy)
   set(options)
   set(oneValueArgs INPUT OUTPUT)
   set(multiValueArgs DEPENDS)
-  cmake_parse_arguments(_GCO "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
-  if(NOT _GCO_INPUT)
+  cmake_parse_arguments(_GENCPY "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
+  if(NOT _GENCPY_INPUT)
     message(FATAL_ERROR "generate_copy: Missing INPUT argument")
   endif()
-  if(NOT _GCO_OUTPUT)
+  if(NOT _GENCPY_OUTPUT)
     message(FATAL_ERROR "generate_copy: Missing OUTPUT argument")
   endif()
 
   # Make a forced file copy, overwriting any pre-existing output file.
-  add_custom_command(OUTPUT "${_GCO_OUTPUT}"
+  add_custom_command(OUTPUT "${_GENCPY_OUTPUT}"
                      COMMAND "${CMAKE_COMMAND}"
-                             -E remove "${_GCO_OUTPUT}"
+                             -E remove "${_GENCPY_OUTPUT}"
                      COMMAND "${CMAKE_COMMAND}"
-                             -E copy "${_GCO_INPUT}" "${_GCO_OUTPUT}"
-                     DEPENDS "${source}" ${_GCO_DEPENDS})
+                             -E copy "${_GENCPY_INPUT}" "${_GENCPY_OUTPUT}"
+                     DEPENDS "${_GENCPY_INPUT}" ${_GENCPY_DEPENDS})
 endfunction()
diff --git a/scripts/cmake/gensrc.cmake.in b/scripts/cmake/gensrc.cmake.in
index 52dab8d2b..f915394a2 100644
--- a/scripts/cmake/gensrc.cmake.in
+++ b/scripts/cmake/gensrc.cmake.in
@@ -21,8 +21,8 @@ set(DFA_XTRA "@DFA_XTRA@")
 set(PNG_PREFIX "@PNG_PREFIX@")
 set(PNGLIB_VERSION "@PNGLIB_VERSION@")
 
-if(OUTPUT STREQUAL "scripts/pnglibconf.c")
-  # Generate scripts/pnglibconf.c
+if(OUTPUT MATCHES "(scripts/pnglibconf\\.c)\$")
+  # Generate "${BINDIR}/scripts/pnglibconf.c"
 
   file(REMOVE "${BINDIR}/pnglibconf.tf6" "${BINDIR}/pnglibconf.tf7")
 
@@ -49,8 +49,8 @@ if(OUTPUT STREQUAL "scripts/pnglibconf.c")
   file(MAKE_DIRECTORY "${BINDIR}/scripts")
   file(RENAME "pnglibconf.tf7" "${BINDIR}/scripts/pnglibconf.c")
 
-elseif(OUTPUT STREQUAL "pnglibconf.c")
-  # Generate pnglibconf.c
+elseif(OUTPUT MATCHES "(pnglibconf\\.c)\$")
+  # Generate "${BINDIR}/pnglibconf.c"
 
   file(REMOVE "${BINDIR}/pnglibconf.tf4" "${BINDIR}/pnglibconf.tf5")
 
@@ -76,10 +76,10 @@ elseif(OUTPUT STREQUAL "pnglibconf.c")
   file(MAKE_DIRECTORY "${BINDIR}/scripts")
   file(RENAME "pnglibconf.tf5" "${BINDIR}/pnglibconf.c")
 
-elseif(OUTPUT STREQUAL "pnglibconf.h")
-  # Generate pnglibconf.h
+elseif(OUTPUT MATCHES "(pnglibconf\\.h)\$")
+  # Generate "${BINDIR}/pnglibconf.h"
 
-  file(REMOVE "${BINDIR}/${OUTPUT}")
+  file(REMOVE "${OUTPUT}")
   if(PNG_PREFIX)
     file(REMOVE "pnglibconf.tf8")
 
@@ -95,20 +95,21 @@ elseif(OUTPUT STREQUAL "pnglibconf.h")
       message(FATAL_ERROR "Failed to generate pnglibconf.tf8")
     endif()
 
-    file(RENAME "pnglibconf.tf8" "${BINDIR}/${OUTPUT}")
+    file(RENAME "pnglibconf.tf8" "${OUTPUT}")
   else()
-    execute_process(COMMAND "${CMAKE_COMMAND}" -E copy "${BINDIR}/pnglibconf.out"
-                                                       "${BINDIR}/${OUTPUT}"
+    execute_process(COMMAND "${CMAKE_COMMAND}" -E copy "pnglibconf.out"
+                                                       "${OUTPUT}"
+                    WORKING_DIRECTORY "${BINDIR}"
                     RESULT_VARIABLE COPY_FAIL)
     if(COPY_FAIL)
       message(FATAL_ERROR "Failed to create pnglibconf.h")
     endif()
   endif()
 
-elseif(OUTPUT STREQUAL "pngprefix.h")
-  # Generate pngprefix.h
+elseif(OUTPUT MATCHES "(pngprefix\\.h)\$")
+  # Generate "${BINDIR}/pngprefix.h"
 
-  file(REMOVE "${BINDIR}/${OUTPUT}")
+  file(REMOVE "${OUTPUT}")
 
   if(PNG_PREFIX)
     file(REMOVE "pngprefix.tf1")
@@ -122,12 +123,12 @@ elseif(OUTPUT STREQUAL "pngprefix.h")
       message(FATAL_ERROR "Failed to generate pngprefix.tf1")
     endif()
 
-    file(RENAME "pngprefix.tf1" "${BINDIR}/${OUTPUT}")
+    file(RENAME "pngprefix.tf1" "${OUTPUT}")
   else()
-    file(WRITE "${BINDIR}/${OUTPUT}" "/* No libpng symbol prefix configured. */")
+    file(WRITE "${OUTPUT}" "/* No libpng symbol prefix configured. */")
   endif()
 
-elseif(OUTPUT STREQUAL "scripts/pnglibconf.h.prebuilt")
+elseif(OUTPUT MATCHES "(scripts/pnglibconf\\.h\\.prebuilt)\$")
   # Generate scripts/pnglibconf.h.prebuilt (fails build)
 
   message(STATUS "Attempting to build scripts/pnglibconf.h.prebuilt")