8217032: Check pandoc capabilities in configure

Reviewed-by: mikael, ihse

make/autoconf/basics.m4

@@ -618,14 +618,6 @@ AC_DEFUN_ONCE([BASIC_SETUP_FUNDAMENTAL_TOOLS],
   BASIC_PATH_PROGS(CPIO, [cpio bsdcpio])
   BASIC_PATH_PROGS(NICE, nice)
 
-  BASIC_PATH_PROGS(PANDOC, pandoc)
-  if test -n "$PANDOC"; then
-    ENABLE_PANDOC="true"
-  else
-    ENABLE_PANDOC="false"
-  fi
-  AC_SUBST(ENABLE_PANDOC)
-
   BASIC_PATH_PROGS(LSB_RELEASE, lsb_release)
   BASIC_PATH_PROGS(CMD, [cmd.exe /mnt/c/Windows/System32/cmd.exe])
 ])
@@ -1193,6 +1185,7 @@ AC_DEFUN_ONCE([BASIC_SETUP_COMPLEX_TOOLS],
   BASIC_CHECK_FIND_DELETE
   BASIC_CHECK_TAR
   BASIC_CHECK_GREP
+  BASIC_SETUP_PANDOC
 
   # These tools might not be installed by default,
   # need hint on how to install them.
@@ -1377,6 +1370,34 @@ AC_DEFUN_ONCE([BASIC_CHECK_BASH_OPTIONS],
   AC_SUBST(BASH_ARGS)
 ])
 
+################################################################################
+#
+# Setup Pandoc
+#
+AC_DEFUN_ONCE([BASIC_SETUP_PANDOC],
+[
+  BASIC_PATH_PROGS(PANDOC, pandoc)
+
+  PANDOC_MARKDOWN_FLAG="markdown"
+  if test -n "$PANDOC"; then
+    AC_MSG_CHECKING(if the pandoc smart extension needs to be disabled for markdown)
+    if $PANDOC --list-extensions | $GREP -q '\+smart'; then
+      AC_MSG_RESULT([yes])
+      PANDOC_MARKDOWN_FLAG="markdown-smart"
+    else
+      AC_MSG_RESULT([no])
+    fi
+  fi
+
+  if test -n "$PANDOC"; then
+    ENABLE_PANDOC="true"
+  else
+    ENABLE_PANDOC="false"
+  fi
+  AC_SUBST(ENABLE_PANDOC)
+  AC_SUBST(PANDOC_MARKDOWN_FLAG)
+])
+
 ################################################################################
 #
 # Default make target

make/autoconf/spec.gmk.in

@@ -774,6 +774,7 @@ MSVCP_DLL:=@MSVCP_DLL@
 UCRT_DLL_DIR:=@UCRT_DLL_DIR@
 STLPORT_LIB:=@STLPORT_LIB@
 ENABLE_PANDOC:=@ENABLE_PANDOC@
+PANDOC_MARKDOWN_FLAG:=@PANDOC_MARKDOWN_FLAG@
 
 ####################################################
 #

make/common/ProcessMarkdown.gmk

@@ -80,7 +80,8 @@ define ProcessMarkdown
 	$$(call LogInfo, Converting $2 to $$($1_FORMAT))
 	$$(call MakeDir, $$(SUPPORT_OUTPUTDIR)/markdown $$(dir $$($1_$2_PANDOC_OUTPUT)))
 	$$(call ExecuteWithLog, $$(SUPPORT_OUTPUTDIR)/markdown/$$($1_$2_MARKER), \
-	    $$(PANDOC) $$($1_OPTIONS) -f markdown-smart -t $$($1_FORMAT) --standalone \
+	    $$(PANDOC) $$($1_OPTIONS) -f $$(PANDOC_MARKDOWN_FLAG) \
+	    -t $$($1_FORMAT) --standalone \
 	    $$($1_$2_CSS_OPTION) $$($1_$2_OPTIONS) '$$($1_$2_PANDOC_INPUT)' \
 	    -o '$$($1_$2_PANDOC_OUTPUT)')
         ifneq ($$(findstring $$(LOG_LEVEL), debug trace),)