msvs-build: use msbuild for vs >= 2005

allows concurrent builds via the /m command line option

Change-Id: I668792ba00276e8626dc175c0a44ddab35fc7114

build/make/gen_msvs_sln.sh

diff --git a/build/make/gen_msvs_sln.sh b/build/make/gen_msvs_sln.sh
index 5a8c793..f9fc694 100755
--- a/build/make/gen_msvs_sln.sh
+++ b/build/make/gen_msvs_sln.sh
@@ -74,8 +74,13 @@
 
     # assume that all projects have the same list of possible configurations,
     # so overwriting old config_lists is not a problem
-    config_list=`grep -A1 '<Configuration' $file |
-        grep Name | cut -d\" -f2`
+    if [ "$sfx" = "vcproj" ]; then
+        config_list=`grep -A1 '<Configuration' $file |
+            grep Name | cut -d\" -f2`
+    else
+        config_list=`grep -B1 'Label="Configuration"' $file |
+            grep Condition | cut -d\' -f4`
+    fi
     proj_list="${proj_list} ${var}"
 }
 
@@ -168,9 +173,14 @@
     IFS=$'\r'$'\n'
     local TAB=$'\t'
     cat <<EOF
-found_devenv := \$(shell which devenv.com >/dev/null 2>&1 && echo yes)
+ifeq (\$(CONFIG_VS_VERSION),7)
+MSBUILD_TOOL := devenv.com
+else
+MSBUILD_TOOL := msbuild.exe
+endif
+found_devenv := \$(shell which \$(MSBUILD_TOOL) >/dev/null 2>&1 && echo yes)
 .nodevenv.once:
-${TAB}@echo "  * devenv.com not found in path."
+${TAB}@echo "  * \$(MSBUILD_TOOL) not found in path."
 ${TAB}@echo "  * "
 ${TAB}@echo "  * You will have to build all configurations manually using the"
 ${TAB}@echo "  * Visual Studio IDE. To allow make to build them automatically,"
@@ -195,16 +205,17 @@
 ifneq (\$(found_devenv),)
   ifeq (\$(CONFIG_VS_VERSION),7)
 $nows_sln_config: $outfile
-${TAB}devenv.com $outfile -build "$config"
+${TAB}\$(MSBUILD_TOOL) $outfile -build "$config"
 
   else
 $nows_sln_config: $outfile
-${TAB}devenv.com $outfile -build "$sln_config"
+${TAB}\$(MSBUILD_TOOL) $outfile -m -t:Build \\
+${TAB}${TAB}-p:Configuration="$config" -p:Platform="$platform"
 
   endif
 else
 $nows_sln_config: $outfile .nodevenv.once
-${TAB}@echo "  * Skipping build of $sln_config (devenv.com not in path)."
+${TAB}@echo "  * Skipping build of $sln_config (\$(MSBUILD_TOOL) not in path)."
 ${TAB}@echo "  * "
 endif