diff --git a/reactos/dll/win32/glu32/glu32.def b/reactos/dll/win32/glu32/glu32.def
deleted file mode 100644
index d6255b19bed..00000000000
--- a/reactos/dll/win32/glu32/glu32.def
+++ /dev/null
@@ -1,60 +0,0 @@
-EXPORTS
-gluBeginCurve@4
-gluBeginPolygon@4
-gluBeginSurface@4
-gluBeginTrim@4
-gluBuild1DMipmapLevels@36
-gluBuild1DMipmaps@24
-gluBuild2DMipmapLevels@40
-gluBuild2DMipmaps@28
-gluBuild3DMipmapLevels@44
-gluBuild3DMipmaps@32
-gluCheckExtension@8
-gluCylinder@36
-gluDeleteNurbsRenderer@4
-gluDeleteQuadric@4
-gluDeleteTess@4
-gluDisk@28
-gluEndCurve@4
-gluEndPolygon@4
-gluEndSurface@4
-gluEndTrim@4
-gluErrorString@4
-gluGetNurbsProperty@12
-gluGetString@4
-gluGetTessProperty@12
-gluLoadSamplingMatrices@16
-gluLookAt@72
-gluNewNurbsRenderer@0
-gluNewQuadric@0
-gluNewTess@0
-gluNextContour@8
-gluNurbsCallback@12
-gluNurbsCallbackData@8
-gluNurbsCallbackDataEXT@8
-gluNurbsCurve@28
-gluNurbsProperty@12
-gluNurbsSurface@44
-gluOrtho2D@32
-gluPartialDisk@44
-gluPerspective@32
-gluPickMatrix@36
-gluProject@48
-gluPwlCurve@20
-gluQuadricCallback@12
-gluQuadricDrawStyle@8
-gluQuadricNormals@8
-gluQuadricOrientation@8
-gluQuadricTexture@8
-gluScaleImage@36
-gluSphere@20
-gluTessBeginContour@4
-gluTessBeginPolygon@8
-gluTessCallback@12
-gluTessEndContour@4
-gluTessEndPolygon@4
-gluTessNormal@28
-gluTessProperty@16
-gluTessVertex@12
-gluUnProject@48
-gluUnProject4@76
diff --git a/reactos/dll/win32/glu32/glu32.rbuild b/reactos/dll/win32/glu32/glu32.rbuild
index 9ce9837c580..fd75052d2e6 100644
--- a/reactos/dll/win32/glu32/glu32.rbuild
+++ b/reactos/dll/win32/glu32/glu32.rbuild
@@ -1,5 +1,5 @@
 <module name="glu32" type="win32dll" entrypoint="0" baseaddress="${BASEADDRESS_GLU32}" installbase="system32" installname="glu32.dll" allowwarnings="true" crt="msvcrt">
-	<importlibrary definition="glu32.def" />
+	<importlibrary definition="glu32.spec" />
 	<include base="glu32">include</include>
 	<include base="glu32">libnurbs/internals</include>
 	<include base="glu32">libnurbs/interface</include>
diff --git a/reactos/dll/win32/glu32/glu32.spec b/reactos/dll/win32/glu32/glu32.spec
new file mode 100644
index 00000000000..e9db336accd
--- /dev/null
+++ b/reactos/dll/win32/glu32/glu32.spec
@@ -0,0 +1,59 @@
+@ stdcall gluBeginCurve(ptr)
+@ stdcall gluBeginPolygon(ptr)
+@ stdcall gluBeginSurface(ptr)
+@ stdcall gluBeginTrim(ptr)
+@ stdcall gluBuild1DMipmapLevels(long long long long long long long long ptr)
+@ stdcall gluBuild1DMipmaps(long long long long long ptr)
+@ stdcall gluBuild2DMipmapLevels(long long long long long long long long long ptr)
+@ stdcall gluBuild2DMipmaps(long long long long long long ptr)
+@ stdcall gluBuild3DMipmapLevels(long long long long long long long long long long ptr)
+@ stdcall gluBuild3DMipmaps(long long long long long long long ptr)
+@ stdcall gluCheckExtension(str ptr)
+@ stdcall gluCylinder(ptr double double double long long)
+@ stdcall gluDeleteNurbsRenderer(ptr)
+@ stdcall gluDeleteQuadric(ptr)
+@ stdcall gluDeleteTess(ptr)
+@ stdcall gluDisk(ptr double double long long)
+@ stdcall gluEndCurve(ptr)
+@ stdcall gluEndPolygon(ptr)
+@ stdcall gluEndSurface(ptr)
+@ stdcall gluEndTrim(ptr)
+@ stdcall gluErrorString(long)
+@ stdcall gluGetNurbsProperty(ptr long ptr)
+@ stdcall gluGetString(long)
+@ stdcall gluGetTessProperty(ptr long ptr)
+@ stdcall gluLoadSamplingMatrices(ptr ptr ptr ptr)
+@ stdcall gluLookAt(double double double double double double double double double)
+@ stdcall gluNewNurbsRenderer()
+@ stdcall gluNewQuadric()
+@ stdcall gluNewTess()
+@ stdcall gluNextContour(ptr long)
+@ stdcall gluNurbsCallback(ptr long ptr)
+@ stdcall gluNurbsCallbackData(ptr ptr)
+@ stdcall gluNurbsCallbackDataEXT(ptr ptr)
+@ stdcall gluNurbsCurve(ptr long ptr long ptr long long)
+@ stdcall gluNurbsProperty(ptr long long)
+@ stdcall gluNurbsSurface(ptr long ptr long ptr long long ptr long long long)
+@ stdcall gluOrtho2D(double double double double)
+@ stdcall gluPartialDisk(ptr double double long long double double)
+@ stdcall gluPerspective(double double double double)
+@ stdcall gluPickMatrix(double double double double ptr)
+@ stdcall gluProject(double double double ptr ptr ptr ptr ptr ptr)
+@ stdcall gluPwlCurve(ptr long ptr long long)
+@ stdcall gluQuadricCallback(ptr long ptr)
+@ stdcall gluQuadricDrawStyle(ptr long)
+@ stdcall gluQuadricNormals(ptr long)
+@ stdcall gluQuadricOrientation(ptr long)
+@ stdcall gluQuadricTexture(ptr long)
+@ stdcall gluScaleImage(long long long long ptr long long long ptr)
+@ stdcall gluSphere(ptr double long long)
+@ stdcall gluTessBeginContour(ptr)
+@ stdcall gluTessBeginPolygon(ptr ptr)
+@ stdcall gluTessCallback(ptr long ptr)
+@ stdcall gluTessEndContour(ptr)
+@ stdcall gluTessEndPolygon(ptr)
+@ stdcall gluTessNormal(ptr double double double)
+@ stdcall gluTessProperty(ptr long double)
+@ stdcall gluTessVertex(ptr ptr ptr)
+@ stdcall gluUnProject(double double double ptr ptr ptr ptr ptr ptr)
+@ stdcall gluUnProject4(double double double double ptr ptr ptr double double ptr ptr ptr ptr)
diff --git a/reactos/dll/win32/wshirda/wshirda.def b/reactos/dll/win32/wshirda/wshirda.def
deleted file mode 100644
index 184d64c6730..00000000000
--- a/reactos/dll/win32/wshirda/wshirda.def
+++ /dev/null
@@ -1,19 +0,0 @@
-; WSHIRDA.DLL - Windows Sockets 2 IRDA Helper DLL
-
-LIBRARY wshirda.dll
-
-EXPORTS
-
-WSHEnumProtocols@16
-WSHGetProviderGuid@8
-WSHGetSockaddrType@12
-WSHGetSocketInformation@32
-WSHGetWSAProtocolInfo@12
-WSHGetWildcardSockaddr@12
-WSHGetWinsockMapping@8
-WSHIoctl@52
-WSHNotify@20
-WSHOpenSocket@24
-WSHSetSocketInformation@32
-
-; EOF
diff --git a/reactos/dll/win32/wshirda/wshirda.rbuild b/reactos/dll/win32/wshirda/wshirda.rbuild
index 5704b4bbb0f..530cc21fb4d 100644
--- a/reactos/dll/win32/wshirda/wshirda.rbuild
+++ b/reactos/dll/win32/wshirda/wshirda.rbuild
@@ -1,5 +1,5 @@
 <module name="wshirda" type="win32dll" baseaddress="${BASEADDRESS_WSHIRDA}" installbase="system32" installname="wshirda.dll" unicode="yes">
-	<importlibrary definition="wshirda.def" />
+	<importlibrary definition="wshirda.spec" />
 	<include base="wshirda">.</include>
 	<define name="_DISABLE_TIDENTS" />
 	<library>ntdll</library>
diff --git a/reactos/dll/win32/wshirda/wshirda.spec b/reactos/dll/win32/wshirda/wshirda.spec
new file mode 100644
index 00000000000..0b8a6684244
--- /dev/null
+++ b/reactos/dll/win32/wshirda/wshirda.spec
@@ -0,0 +1,11 @@
+@ stdcall WSHEnumProtocols(ptr wstr ptr ptr)
+@ stdcall WSHGetProviderGuid(wstr ptr)
+@ stdcall WSHGetSockaddrType(ptr long ptr)
+@ stdcall WSHGetSocketInformation(ptr ptr ptr ptr long long str long)
+@ stdcall WSHGetWSAProtocolInfo(wstr ptr ptr)
+@ stdcall WSHGetWildcardSockaddr(ptr ptr ptr)
+@ stdcall WSHGetWinsockMapping(ptr long)
+@ stdcall WSHIoctl(ptr ptr ptr ptr long ptr long ptr long ptr ptr ptr ptr)
+@ stdcall WSHNotify(ptr ptr ptr ptr long)
+@ stdcall WSHOpenSocket(ptr ptr ptr ptr ptr ptr)
+@ stdcall WSHSetSocketInformation(ptr ptr ptr ptr long long str long)