add generating cvs_date to appveyor.yml

Author: dukelsky

appveyor.yml

@@ -23,6 +23,12 @@ install:
   - cmd: git clone https://github.com/huskyproject/huskylib  C:\projects\huskylib
   - cmd: git clone https://github.com/huskyproject/smapi  C:\projects\smapi
   - cmd: git clone https://github.com/huskyproject/fidoconf  C:\projects\fidoconf
+before_build:
+  - ps:
+      cd C:\projects\huskylib; $huskylib_mdate=git log -1 --date=short --format=format:"%cd" huskylib/*.h src/*.c; echo "char cvs_date[]=""$huskylib_mdate"";" > cvsdate.h;
+      cd C:\projects\smapi; $smapi_mdate=git log -1 --date=short --format=format:"%cd" smapi/*.h src/*.c;if($huskylib_mdate -gt $smapi_mdate) {$smapi_mdate=$huskylib_mdate}; echo "char cvs_date[]=""$smapi_mdate"";" > cvsdate.h;
+      cd C:\projects\fidoconf; $fidoconf_mdate=git log -1 --date=short --format=format:"%cd" fidoconf/*.h src/*.c; if($smapi_mdate -gt $fidoconf_mdate) {$fidoconf_mdate=$smapi_mdate}; echo "char cvs_date[]=""$fidoconf_mdate"";" > cvsdate.h;
+      cd C:\projects\sqpack; $sqpack_mdate=git log -1 --date=short --format=format:"%cd" *.h *.c; if($fidoconf_mdate -gt $sqpack_mdate) {$sqpack_mdate=$fidoconf_mdate}; echo "char cvs_date[]=""$sqpack_mdate"";" > cvsdate.h
 build_script:
   - cmd: 
       cd C:\projects\huskylib && mkdir build && cd build && cmake --version &&  cmake .. -G "%GENERATOR%" %CF% && cmake --build . -- /P:Configuration=Release &&