and here we go

CMake should run make-appdata.sh

.gitignore

@@ -32,3 +32,4 @@ res/binary_to_compressed_c.exe
 res/docpdf/manual.html
 res/docpdf/manual.pdf
 res/docpdf/.venv
+res/furnace.appdata.xml

CMakeLists.txt

@@ -25,6 +25,15 @@ set(SYSTEM_SDL2_DEFAULT OFF)
 include(CheckIncludeFile)
 include(TestBigEndian)
 
+execute_process(COMMAND git status RESULT_VARIABLE DONT_HAVE_GIT WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
+if (NOT DONT_HAVE_GIT)
+  message(STATUS "Git is available")
+else()
+  message(WARNING "either Git is not available, or this Git repository has not been initialized.
+if you have used the \"Source code\" option in the GitHub release page, you are doing it wrong! unless you manually initialize submodules, the build is guaranteed to FAIL spectacularly!
+read the \"developer info\" section of README.md for more information.")
+endif()
+
 if (ANDROID)
   set(USE_RTMIDI_DEFAULT OFF)
   set(WITH_PORTAUDIO_DEFAULT OFF)
@@ -922,6 +931,15 @@ if (WARNINGS_ARE_ERRORS)
   )
 endif()
 
+if (NOT ANDROID OR TERMUX)
+  if (NOT WIN32 AND NOT APPLE)
+    if (NOT DONT_HAVE_GIT)
+      add_custom_command(OUTPUT furnace.appdata.xml COMMAND res/make-appdata.sh ARGS ${CMAKE_SOURCE_DIR}/res/furnace.appdata.xml.in ${CMAKE_BINARY_DIR}/furnace.appdata.xml DEPENDS res/furnace.appdata.xml.in WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
+      list(APPEND USED_SOURCES furnace.appdata.xml)
+    endif()
+  endif()
+endif()
+
 if(ANDROID AND NOT TERMUX)
   add_library(furnace SHARED ${USED_SOURCES})
 elseif(WIN32)
@@ -952,7 +970,9 @@ if (NOT ANDROID OR TERMUX)
     include(GNUInstallDirs)
     install(TARGETS furnace RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
     install(FILES res/furnace.desktop DESTINATION ${CMAKE_INSTALL_DATADIR}/applications)
-    install(FILES res/furnace.appdata.xml DESTINATION ${CMAKE_INSTALL_DATADIR}/metainfo)
+    if (NOT DONT_HAVE_GIT)
+      install(FILES ${CMAKE_BINARY_DIR}/furnace.appdata.xml DESTINATION ${CMAKE_INSTALL_DATADIR}/metainfo)
+    endif()
     install(DIRECTORY doc DESTINATION ${CMAKE_INSTALL_DOCDIR})
     install(DIRECTORY papers DESTINATION ${CMAKE_INSTALL_DOCDIR}/other)
     install(FILES LICENSE DESTINATION ${CMAKE_INSTALL_DATADIR}/licenses/furnace)

res/furnace.appdata.xml.in

@@ -11,7 +11,7 @@
   
   <description>
     <p>
-      the biggest chiptune tracker ever made!
+      Furnace - the biggest chiptune tracker ever made!
     </p>
     <p>
       it allows you to create songs using a music tracker interface for several computer/game console/arcade sound chips.

res/make-appdata.sh

@@ -1,10 +1,15 @@
 #!/bin/bash
 
-echo "generating furnace.appdata.xml..."
+if [ $# -lt 2 ]; then
+  echo "usage: $0 input output"
+  exit 1
+fi
 
-cat furnace.appdata.xml.in > furnace.appdata.xml
+#echo "generating $2..."
 
-echo "  <releases>" >> furnace.appdata.xml
+cat "$1" > "$2"
+
+echo "  <releases>" >> "$2"
 
 for i in `git log --tags='v*' --no-walk --format="%as/%(describe:tags)"`; do
   releaseDate=${i%/*}
@@ -13,13 +18,13 @@ for i in `git log --tags='v*' --no-walk --format="%as/%(describe:tags)"`; do
   if [[ $releaseVer =~ "pre" ]]; then
     releaseType=development
   fi
-  echo "    <release version=\"${releaseVer/pre/~pre}\" date=\"$releaseDate\" type=\"$releaseType\">" >> furnace.appdata.xml
-  echo "      <url>https://github.com/tildearrow/furnace/releases/tag/$releaseVer</url>" >> furnace.appdata.xml
-  echo "    </release>" >> furnace.appdata.xml
+  echo "    <release version=\"${releaseVer/pre/~pre}\" date=\"$releaseDate\" type=\"$releaseType\">" >> "$2"
+  echo "      <url>https://github.com/tildearrow/furnace/releases/tag/$releaseVer</url>" >> "$2"
+  echo "    </release>" >> "$2"
 done
 
-echo "  </releases>" >> furnace.appdata.xml
+echo "  </releases>" >> "$2"
 
-echo "</component>" >> furnace.appdata.xml
+echo "</component>" >> "$2"
 
-echo "done."
+#echo "done."

scripts/release-linux-AppImage.sh

@@ -30,8 +30,8 @@ cp -v ../../../res/logo.png furnace.png || exit 1
 ln -s furnace.png .DirIcon || exit 1
 cp -v ../../../res/furnace.desktop . || exit 1
 #mkdir -p usr/share/metainfo || exit 1
-cp -v ../../../res/furnace.appdata.xml usr/share/metainfo/org.tildearrow.furnace.metainfo.xml || exit 1
-rm usr/share/metainfo/furnace.appdata.xml || exit 1
+#cp -v ../../../res/furnace.appdata.xml usr/share/metainfo/org.tildearrow.furnace.metainfo.xml || exit 1
+#rm usr/share/metainfo/furnace.appdata.xml || exit 1
 cp -v ../../../res/AppRun . || exit 1
 
 #cp /usr/lib/libm.so.6 usr/lib/ || exit 1