diff --git a/.github/workflows/alpine.test.sh b/.github/workflows/alpine.test.sh
index 784a849aa1..781d65880e 100755
--- a/.github/workflows/alpine.test.sh
+++ b/.github/workflows/alpine.test.sh
@@ -12,4 +12,6 @@ ls -lat
 
 ./v test-compiler
 
+./v build-vbinaries
+
 echo "DONE"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0ffda1dee8..cd6f951052 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,6 +37,8 @@ jobs:
       run:  ./v -o v2 v.v && ./v2 -o v3 v.v
     - name: Test v->c
       run: ./v test-compiler
+    - name: Test v binaries
+      run: ./v build-vbinaries
 #    - name: Test v->js
 #      run: ./v -o hi.js examples/hello_v_js.v && node hi.js
     - name: Test symlink
@@ -59,6 +61,8 @@ jobs:
       run: make && ./v -cc gcc -o v v.v
     - name: Test V
       run: ./v test-compiler
+    - name: Test v binaries
+      run: ./v build-vbinaries
 #    - name: Test v->js
 #      run: ./v -o hi.js examples/hello_v_js.v && node hi.js
     - name: Build Vorum
@@ -97,23 +101,27 @@ jobs:
 
   ubuntu-tcc:
     runs-on: ubuntu-18.04
+    env:
+      VFLAGS: -cc tcc
     steps:
     - uses: actions/checkout@v1
     - name: Install dependencies
       run: sudo apt-get update; sudo apt-get install --quiet -y libglfw3 libglfw3-dev libfreetype6-dev libssl-dev sqlite3 libsqlite3-dev
     - name: Build v
-      run: make && ./v -o v v.v
-    - name: Test v->c with tcc
-      env:
-        VFLAGS: -cc tcc
+      run: echo $VFLAGS && make && ./v -o v v.v
+    - name: Test v->c
       run: |
         sudo ln -s /var/tmp/tcc/bin/tcc /usr/local/bin/tcc
         tcc -version
         ./v -o v2 v.v # Make sure vtcc can build itself
         ./v test-compiler
+    - name: Test v binaries
+      run: ./v build-vbinaries
 
   ubuntu-musl:
     runs-on: ubuntu-18.04
+    env:
+      VFLAGS: -cc musl-gcc
     steps:
     - uses: actions/checkout@v1
     - uses: actions/setup-node@v1
@@ -122,14 +130,16 @@ jobs:
     - name: Install dependencies
       run: sudo apt-get update; sudo apt-get install --quiet -y musl musl-tools
     - name: Build v
-      run: make && ./v -cc musl-gcc -o v v.v
-#    - name: Test v->c
-#      run: ./v test-compiler
+      run: echo $VFLAGS && make && ./v -o v v.v
+    - name: Test v binaries
+      run: ./v build-vbinaries
 #    - name: Test v->js
 #      run: ./v -o hi.js examples/hello_v_js.v && node hi.js
 
   windows-gcc:
     runs-on: windows-2019
+    env:
+        VFLAGS: -cc gcc
     steps:
     - uses: actions/checkout@v1
     #- uses: actions/setup-node@v1
@@ -146,26 +156,30 @@ jobs:
       ## v.js dosent work on windows
         #.\v.exe -o hi.js examples/hello_v_js.v
         #node hi.js
+    - name: Test v binaries
+      run: ./v build-vbinaries
 
   windows-msvc:
     runs-on: windows-2019
+    env:
+        VFLAGS: -cc msvc
     steps:
     - uses: actions/checkout@v1
     #- uses: actions/setup-node@v1
     #  with:
     #    node-version: 12.x
     - name: Build
-      env:
-        VFLAGS: -cc msvc
       run: |
+        echo %VFLAGS%
+        echo $VFLAGS
         git clone --depth=1 https://github.com/ubawurinna/freetype-windows-binaries.git thirdparty/freetype/
         .\make.bat -msvc
     - name: Test
-      env:
-        VFLAGS: -cc msvc
       run: |
         .\v.exe test-compiler
       ## v.js dosent work on windows
         #.\v.exe -o hi.js examples/hello_v_js.v
         #node hi.js
+    - name: Test v binaries
+      run: ./v build-vbinaries
 
diff --git a/.gitignore b/.gitignore
index c47b41c540..28ed09ae0e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,25 +6,22 @@ fns.txt
 /v.c
 /v.*.c
 /v.c.out
-/v.exe
 /tools/performance_compare
 /tools/performance_compare.exe
 /tools/vrepl
-/tools/vrepl.exe
 /tools/vtest
-/tools/vtest.exe
 /tools/vtest-compiler
-/tools/vtest-compiler.exe
 /tools/vup
-/tools/vup.exe
 /tools/vpm
-/tools/vpm.exe
 /tools/vcreate
-/tools/vcreate.exe
 /tools/vbuild-examples
-/tools/vbuild-examples.exe
 /tools/vbuild-tools
-/tools/vbuild-tools.exe
+/tools/vbuild-vbinaries
+/v_g
+/v_cg
+/v_prod
+/v_prod_cg
+/v_prod_g
 *.exe
 *.o
 .*.c
diff --git a/tools/modules/testing/common.v b/tools/modules/testing/common.v
index 64b5077078..8a5254dfe3 100644
--- a/tools/modules/testing/common.v
+++ b/tools/modules/testing/common.v
@@ -62,7 +62,7 @@ pub fn (ts mut TestSession) test() {
 
 		ts.benchmark.step()
 		if show_stats {
-			println('-------------------------------------------------')
+			eprintln('-------------------------------------------------')
 			status := os.system(cmd)
 			if status == 0 {
 				ts.benchmark.ok()
@@ -75,16 +75,16 @@ pub fn (ts mut TestSession) test() {
 			r := os.exec(cmd) or {
 				ts.benchmark.fail()
 				ts.failed = true
-				println(ts.benchmark.step_message('$relative_file ${ts.fail}'))
+				eprintln(ts.benchmark.step_message('$relative_file ${ts.fail}'))
 				continue
 			}
 			if r.exit_code != 0 {
 				ts.benchmark.fail()
 				ts.failed = true
-				println(ts.benchmark.step_message('$relative_file ${ts.fail}\n`$file`\n (\n$r.output\n)'))
+				eprintln(ts.benchmark.step_message('$relative_file ${ts.fail}\n`$file`\n (\n$r.output\n)'))
 			} else {
 				ts.benchmark.ok()
-				println(ts.benchmark.step_message('$relative_file ${ts.ok}'))
+				eprintln(ts.benchmark.step_message('$relative_file ${ts.ok}'))
 			}
 		}
 		os.rm( tmpc_filepath )
@@ -95,7 +95,7 @@ pub fn (ts mut TestSession) test() {
 pub fn vlib_should_be_present( parent_dir string ) {
 	vlib_dir := filepath.join( parent_dir, 'vlib' )
 	if !os.dir_exists( vlib_dir ){
-		println('$vlib_dir is missing, it must be next to the V executable')
+		eprintln('$vlib_dir is missing, it must be next to the V executable')
 		exit(1)
 	}
 }
@@ -107,7 +107,7 @@ pub fn v_build_failing(vargs string, folder string) bool {
 	parent_dir := os.dir(vexe)
 	vlib_should_be_present( parent_dir )
   
-	println(main_label)
+	eprintln(main_label)
 	mut session := new_test_sesion( vargs )
 	files := os.walk_ext(filepath.join(parent_dir, folder),'.v')
 	mains := files.filter(!it.contains('modules'))
@@ -120,7 +120,60 @@ pub fn v_build_failing(vargs string, folder string) bool {
 	}
 	session.files << rebuildable_mains
 	session.test()
-	println( session.benchmark.total_message( finish_label ) )
+	eprintln( session.benchmark.total_message( finish_label ) )
 
 	return session.failed
 }
+
+pub fn build_v_cmd_failed (cmd string) bool {
+	res := os.exec(cmd) or {
+		return true
+	}
+	if res.exit_code != 0 {
+		eprintln('')
+		eprintln( res.output )
+		return true
+	}
+	return false
+}
+
+pub fn building_any_v_binaries_failed() bool {
+	eprintln('Building V binaries...')
+	eprintln('VFLAGS is: "' + os.getenv('VFLAGS') + '"')
+	vexe := testing.vexe_path()
+	parent_dir := os.dir(vexe)
+	testing.vlib_should_be_present( parent_dir )
+	os.chdir( parent_dir )
+	
+	mut failed := false 
+	v_build_commands := [
+
+		// '$vexe -o v_g             -g  v.v',
+		// '$vexe -o v_prod_g  -prod -g  v.v',
+
+		'$vexe -o v_cg            -cg v.v',
+		'$vexe -o v_prod_cg -prod -cg v.v',
+
+		'$vexe -o v_prod    -prod     v.v',
+	]
+	
+	mut bmark := benchmark.new_benchmark()
+	bok   := term.ok_message('OK')
+	bfail := term.fail_message('FAIL')
+	for cmd in v_build_commands { 
+		bmark.step()
+		if build_v_cmd_failed(cmd) {
+			bmark.fail()
+			failed = true
+			eprintln(bmark.step_message('$cmd => ${bfail} . See details above ^^^^^^^'))
+			eprintln('')
+			continue
+		}
+		bmark.ok()
+		eprintln(bmark.step_message('$cmd => ${bok}'))		
+	}
+	bmark.stop()
+	eprintln( bmark.total_message( 'building v binaries' ) )
+	
+	return failed
+}
diff --git a/tools/vbuild-vbinaries.v b/tools/vbuild-vbinaries.v
new file mode 100644
index 0000000000..a4d959e0f4
--- /dev/null
+++ b/tools/vbuild-vbinaries.v
@@ -0,0 +1,9 @@
+module main
+
+import testing
+
+fn main() {
+	if testing.building_any_v_binaries_failed() { 
+		exit(1) 
+	}
+}
diff --git a/tools/vtest-compiler.v b/tools/vtest-compiler.v
index 1c34ef8811..67d697a448 100644
--- a/tools/vtest-compiler.v
+++ b/tools/vtest-compiler.v
@@ -27,7 +27,7 @@ fn v_test_compiler(vargs string){
   
 	/*
 	if !os.file_exists(parent_dir + '/v.v') {
-		println('v.v is missing, it must be next to the V executable')
+		eprintln('v.v is missing, it must be next to the V executable')
 		exit(1)
 	}
 	*/
@@ -37,38 +37,37 @@ fn v_test_compiler(vargs string){
 		if os.file_exists('/v.v') {
 			os.system('$vexe -o v.c v.v')
 			if os.system('cc -Werror v.c') != 0 {
-				println('cc failed to build v.c without warnings')
+				eprintln('cc failed to build v.c without warnings')
 				exit(1)
 			}
-			println('v.c can be compiled without warnings. This is good :)')
+			eprintln('v.c can be compiled without warnings. This is good :)')
 		}
 	}
 	
 	building_tools_failed := testing.v_build_failing(vargs, 'tools')
 	
-	println('\nTesting all _test.v files...')
+	eprintln('\nTesting all _test.v files...')
 	mut compiler_test_session := testing.new_test_sesion( vargs )
 	compiler_test_session.files << os.walk_ext(parent_dir, '_test.v')
 	compiler_test_session.test()
-	println( compiler_test_session.benchmark.total_message('running V tests') )
+	eprintln( compiler_test_session.benchmark.total_message('running V tests') )
 
-	println('')
+	eprintln('')
 	building_examples_failed := testing.v_build_failing(vargs, 'examples')
-	
+
+	eprintln('')
 	v_module_install_cmd := '$vexe install nedpals.args'
-	println('\nInstalling a v module with: $v_module_install_cmd ')
+	eprintln('\nInstalling a v module with: $v_module_install_cmd ')
 	mut vmark := benchmark.new_benchmark()
 	ret := os.system(v_module_install_cmd)
 	if ret != 0 {
-		println('failed to run v install')
-		exit(1)
+		eprintln('failed to run v install')
 	}
 	if !os.file_exists(v_modules_path + '/nedpals/args') {
-		println('v failed to install a test module')
-		exit(1)
+		eprintln('v failed to install a test module')
 	}
 	vmark.stop()
-	println( 'Installing a v module took: ' + vmark.total_duration().str() + 'ms')
+	eprintln( 'Installing a v module took: ' + vmark.total_duration().str() + 'ms')
 	
 	if building_tools_failed || compiler_test_session.failed || building_examples_failed {
 		exit(1)
diff --git a/v.v b/v.v
index 33b7a1fbe6..1d62e2c4de 100755
--- a/v.v
+++ b/v.v
@@ -25,7 +25,7 @@ fn main() {
 	stuff_after_executable := os.args[1..]
 	commands := stuff_after_executable.filter(!it.starts_with('-'))
 	
-	simple_tools := ['up', 'create', 'test', 'test-compiler', 'build-tools', 'build-examples']
+	simple_tools := ['up', 'create', 'test', 'test-compiler', 'build-tools', 'build-examples', 'build-vbinaries']
 	for tool in simple_tools {
 		if tool in commands {
 			compiler.launch_tool('v$tool')