configure: Fixes ncursesw detection under msys2/mingw by convert them to meson

The mingw pkg-config are showing following absolute path and contains : as the separator,

-D_XOPEN_SOURCE=600 -D_POSIX_C_SOURCE=199506L -IC:/CI-Tools/msys64/mingw64/include/ncursesw:-I/usr/include/ncursesw:
-DNCURSES_WIDECHAR -D_XOPEN_SOURCE=600 -D_POSIX_C_SOURCE=199506L -IC -pipe -lncursesw -lgnurx -ltre -lintl -liconv
-DNCURSES_WIDECHAR -D_XOPEN_SOURCE=600 -D_POSIX_C_SOURCE=199506L -IC -lncursesw
-DNCURSES_WIDECHAR -D_XOPEN_SOURCE=600 -D_POSIX_C_SOURCE=199506L -IC -lcursesw
-DNCURSES_WIDECHAR /CI-Tools/msys64/mingw64/include/ncursesw -pipe -lncursesw -lgnurx -ltre -lintl -liconv
-DNCURSES_WIDECHAR /CI-Tools/msys64/mingw64/include/ncursesw -lncursesw
-DNCURSES_WIDECHAR /CI-Tools/msys64/mingw64/include/ncursesw -lcursesw
-DNCURSES_WIDECHAR -I/usr/include/ncursesw -pipe -lncursesw -lgnurx -ltre -lintl -liconv
-DNCURSES_WIDECHAR -I/usr/include/ncursesw -lncursesw
-DNCURSES_WIDECHAR -I/usr/include/ncursesw -lcursesw

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20201012234348.1427-6-luoyonggang@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

configure

@@ -295,7 +295,8 @@ unset target_list_exclude
 
 brlapi=""
 curl=""
-curses=""
+iconv="auto"
+curses="auto"
 docs=""
 fdt="auto"
 netmap="no"
@@ -1173,13 +1174,13 @@ for opt do
   ;;
   --disable-safe-stack) safe_stack="no"
   ;;
-  --disable-curses) curses="no"
+  --disable-curses) curses="disabled"
   ;;
-  --enable-curses) curses="yes"
+  --enable-curses) curses="enabled"
   ;;
-  --disable-iconv) iconv="no"
+  --disable-iconv) iconv="disabled"
   ;;
-  --enable-iconv) iconv="yes"
+  --enable-iconv) iconv="enabled"
   ;;
   --disable-curl) curl="no"
   ;;
@@ -3440,102 +3441,6 @@ EOF
   fi
 fi
 
-##########################################
-# iconv probe
-if test "$iconv" != "no" ; then
-  cat > $TMPC << EOF
-#include <iconv.h>
-int main(void) {
-  iconv_t conv = iconv_open("WCHAR_T", "UCS-2");
-  return conv != (iconv_t) -1;
-}
-EOF
-  iconv_prefix_list="/usr/local:/usr"
-  iconv_lib_list=":-liconv"
-  IFS=:
-  for iconv_prefix in $iconv_prefix_list; do
-    IFS=:
-    iconv_cflags="-I$iconv_prefix/include"
-    iconv_ldflags="-L$iconv_prefix/lib"
-    for iconv_link in $iconv_lib_list; do
-      unset IFS
-      iconv_lib="$iconv_ldflags $iconv_link"
-      echo "looking at iconv in '$iconv_cflags' '$iconv_lib'" >> config.log
-      if compile_prog "$iconv_cflags" "$iconv_lib" ; then
-        iconv_found=yes
-        break
-      fi
-    done
-    if test "$iconv_found" = yes ; then
-      break
-    fi
-  done
-  if test "$iconv_found" = "yes" ; then
-    iconv=yes
-  else
-    if test "$iconv" = "yes" ; then
-      feature_not_found "iconv" "Install iconv devel"
-    fi
-    iconv=no
-  fi
-fi
-
-##########################################
-# curses probe
-if test "$iconv" = "no" ; then
-  # curses will need iconv
-  curses=no
-fi
-if test "$curses" != "no" ; then
-  if test "$mingw32" = "yes" ; then
-    curses_inc_list="$($pkg_config --cflags ncurses 2>/dev/null):"
-    curses_lib_list="$($pkg_config --libs ncurses 2>/dev/null):-lpdcurses"
-  else
-    curses_inc_list="$($pkg_config --cflags ncursesw 2>/dev/null):-I/usr/include/ncursesw:"
-    curses_lib_list="$($pkg_config --libs ncursesw 2>/dev/null):-lncursesw:-lcursesw"
-  fi
-  curses_found=no
-  cat > $TMPC << EOF
-#include <locale.h>
-#include <curses.h>
-#include <wchar.h>
-int main(void) {
-  wchar_t wch = L'w';
-  setlocale(LC_ALL, "");
-  resize_term(0, 0);
-  addwstr(L"wide chars\n");
-  addnwstr(&wch, 1);
-  add_wch(WACS_DEGREE);
-  return 0;
-}
-EOF
-  IFS=:
-  for curses_inc in $curses_inc_list; do
-    # Make sure we get the wide character prototypes
-    curses_inc="-DNCURSES_WIDECHAR $curses_inc"
-    IFS=:
-    for curses_lib in $curses_lib_list; do
-      unset IFS
-      if compile_prog "$curses_inc" "$curses_lib" ; then
-        curses_found=yes
-        break
-      fi
-    done
-    if test "$curses_found" = yes ; then
-      break
-    fi
-  done
-  unset IFS
-  if test "$curses_found" = "yes" ; then
-    curses=yes
-  else
-    if test "$curses" = "yes" ; then
-      feature_not_found "curses" "Install ncurses devel"
-    fi
-    curses=no
-  fi
-fi
-
 ##########################################
 # curl probe
 if test "$curl" != "no" ; then
@@ -6200,16 +6105,6 @@ if test "$have_x11" = "yes" && test "$need_x11" = "yes"; then
   echo "X11_CFLAGS=$x11_cflags" >> $config_host_mak
   echo "X11_LIBS=$x11_libs" >> $config_host_mak
 fi
-if test "$iconv" = "yes" ; then
-  echo "CONFIG_ICONV=y" >> $config_host_mak
-  echo "ICONV_CFLAGS=$iconv_cflags" >> $config_host_mak
-  echo "ICONV_LIBS=$iconv_lib" >> $config_host_mak
-fi
-if test "$curses" = "yes" ; then
-  echo "CONFIG_CURSES=y" >> $config_host_mak
-  echo "CURSES_CFLAGS=$curses_inc" >> $config_host_mak
-  echo "CURSES_LIBS=$curses_lib" >> $config_host_mak
-fi
 if test "$pipe2" = "yes" ; then
   echo "CONFIG_PIPE2=y" >> $config_host_mak
 fi
@@ -7181,6 +7076,7 @@ NINJA=${ninja:-$PWD/ninjatool} $meson setup \
         -Dvnc=$vnc -Dvnc_sasl=$vnc_sasl -Dvnc_jpeg=$vnc_jpeg -Dvnc_png=$vnc_png \
         -Dgettext=$gettext -Dxkbcommon=$xkbcommon -Du2f=$u2f \
         -Dcapstone=$capstone -Dslirp=$slirp -Dfdt=$fdt \
+        -Diconv=$iconv -Dcurses=$curses \
         $cross_arg \
         "$PWD" "$source_path"
 

meson.build

@@ -426,6 +426,74 @@ if targetos == 'linux' and have_tools and not get_option('mpath').disabled()
   endif
 endif
 
+iconv = not_found
+if not get_option('iconv').disabled()
+  libiconv = cc.find_library('iconv',
+                             required: false,
+                             static: enable_static)
+  if libiconv.found()
+    if cc.links('''
+      #include <iconv.h>
+      int main(void) {
+        iconv_t conv = iconv_open("WCHAR_T", "UCS-2");
+        return conv != (iconv_t) -1;
+      }''', dependencies: [libiconv])
+      iconv = declare_dependency(dependencies: [libiconv])
+    endif
+  endif
+endif
+if get_option('iconv').enabled() and not iconv.found()
+  error('Cannot detect iconv API')
+endif
+
+curses = not_found
+if iconv.found() and not get_option('curses').disabled()
+  curses_libname_list = ['ncursesw', 'ncurses', 'cursesw', 'pdcurses']
+  curses_test = '''
+    #include <locale.h>
+    #include <curses.h>
+    #include <wchar.h>
+    int main(void) {
+      wchar_t wch = L'w';
+      setlocale(LC_ALL, "");
+      resize_term(0, 0);
+      addwstr(L"wide chars\n");
+      addnwstr(&wch, 1);
+      add_wch(WACS_DEGREE);
+      return 0;
+    }'''
+  foreach curses_libname : curses_libname_list
+      libcurses = dependency(curses_libname,
+                             required: false,
+                             method: 'pkg-config',
+                             static: enable_static)
+
+      if not libcurses.found()
+        dirs = ['/usr/include/ncursesw']
+        if targetos == 'windows'
+          dirs = []
+        endif
+        libcurses = cc.find_library(curses_libname,
+                                    required: false,
+                                    dirs: dirs,
+                                    static: enable_static)
+      endif
+      if libcurses.found()
+        if cc.links(curses_test, dependencies: [libcurses])
+          curses = declare_dependency(compile_args: '-DNCURSES_WIDECHAR', dependencies: [libcurses])
+          break
+        endif
+      endif
+  endforeach
+endif
+if get_option('curses').enabled() and not curses.found()
+  if not iconv.found()
+    error('Cannot detect iconv API')
+  else
+    error('Cannot detect curses API')
+  endif
+endif
+
 brlapi = not_found
 if 'CONFIG_BRLAPI' in config_host
   brlapi = declare_dependency(link_args: config_host['BRLAPI_LIBS'].split())
@@ -504,16 +572,6 @@ if 'CONFIG_X11' in config_host
   x11 = declare_dependency(compile_args: config_host['X11_CFLAGS'].split(),
                            link_args: config_host['X11_LIBS'].split())
 endif
-curses = not_found
-if 'CONFIG_CURSES' in config_host
-  curses = declare_dependency(compile_args: config_host['CURSES_CFLAGS'].split(),
-                              link_args: config_host['CURSES_LIBS'].split())
-endif
-iconv = not_found
-if 'CONFIG_ICONV' in config_host
-  iconv = declare_dependency(compile_args: config_host['ICONV_CFLAGS'].split(),
-                             link_args: config_host['ICONV_LIBS'].split())
-endif
 vnc = not_found
 png = not_found
 jpeg = not_found
@@ -622,6 +680,7 @@ config_host_data.set('CONFIG_COCOA', cocoa.found())
 config_host_data.set('CONFIG_LIBUDEV', libudev.found())
 config_host_data.set('CONFIG_MPATH', mpathpersist.found())
 config_host_data.set('CONFIG_MPATH_NEW_API', mpathpersist_new_api)
+config_host_data.set('CONFIG_CURSES', curses.found())
 config_host_data.set('CONFIG_SDL', sdl.found())
 config_host_data.set('CONFIG_SDL_IMAGE', sdl_image.found())
 config_host_data.set('CONFIG_VNC', vnc.found())
@@ -1905,8 +1964,8 @@ if config_host.has_key('CONFIG_NETTLE')
 endif
 summary_info += {'libtasn1':          config_host.has_key('CONFIG_TASN1')}
 summary_info += {'PAM':               config_host.has_key('CONFIG_AUTH_PAM')}
-summary_info += {'iconv support':     config_host.has_key('CONFIG_ICONV')}
+summary_info += {'iconv support':     iconv.found()}
-summary_info += {'curses support':    config_host.has_key('CONFIG_CURSES')}
+summary_info += {'curses support':    curses.found()}
 # TODO: add back version
 summary_info += {'virgl support':     config_host.has_key('CONFIG_VIRGL')}
 summary_info += {'curl support':      config_host.has_key('CONFIG_CURL')}

meson_options.txt

@@ -32,6 +32,10 @@ option('cocoa', type : 'feature', value : 'auto',
        description: 'Cocoa user interface (macOS only)')
 option('mpath', type : 'feature', value : 'auto',
        description: 'Multipath persistent reservation passthrough')
+option('iconv', type : 'feature', value : 'auto',
+       description: 'Font glyph conversion support')
+option('curses', type : 'feature', value : 'auto',
+       description: 'curses UI')
 option('sdl', type : 'feature', value : 'auto',
        description: 'SDL user interface')
 option('sdl_image', type : 'feature', value : 'auto',

ui/meson.build

@@ -39,7 +39,7 @@ specific_ss.add(when: ['CONFIG_SOFTMMU'], if_true: opengl)
 
 ui_modules = {}
 
-if config_host.has_key('CONFIG_CURSES')
+if curses.found()
   curses_ss = ss.source_set()
   curses_ss.add(when: [curses, iconv], if_true: [files('curses.c'), pixman])
   ui_modules += {'curses' : curses_ss}