diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4495ec6d..561dac75 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -654,11 +654,20 @@ if(BUILD_SHARED_LIBS)
     set(XML_PC_LIBS_PRIVATE "
 Libs.private:")
 else()
-    target_compile_definitions(LibXml2 PUBLIC LIBXML_STATIC)
-    set(XML_CFLAGS "-DLIBXML_STATIC")
     set(XML_PRIVATE_LIBS_NO_SHARED "${XML_PRIVATE_LIBS}")
 endif()
 
+if(WIN32)
+    set(XML_STATIC_CFLAGS "-DLIBXML_STATIC")
+    if (BUILD_SHARED_LIBS)
+        set(XML_PC_CFLAGS_PRIVATE "
+Cflags.private:")
+    else()
+        target_compile_definitions(LibXml2 PUBLIC LIBXML_STATIC)
+        set(XML_CFLAGS "${XML_STATIC_CFLAGS}")
+    endif()
+endif()
+
 file(RELATIVE_PATH PACKAGE_RELATIVE_PATH "${CMAKE_INSTALL_FULL_LIBDIR}/pkgconfig" "${CMAKE_INSTALL_PREFIX}")
 string(REGEX REPLACE "/$" "" PACKAGE_RELATIVE_PATH "${PACKAGE_RELATIVE_PATH}")
 
diff --git a/configure.ac b/configure.ac
index 3f1cf142..eb296772 100644
--- a/configure.ac
+++ b/configure.ac
@@ -393,6 +393,8 @@ dnl
 XML_LIBDIR='-L${libdir}'
 XML_INCLUDEDIR='-I${includedir}/libxml2'
 XML_CFLAGS=""
+XML_STATIC_CFLAGS=""
+XML_PC_CFLAGS_PRIVATE=""
 
 dnl Thread-local storage
 if test "$with_tls" = "yes"; then
@@ -486,9 +488,13 @@ case ${host} in
         # work properly (without it, xmlexports.h would force the use of
         # DLL imports, which obviously aren't present in a static
         # library).
-        if test "x$enable_shared" = "xno"; then
-            XML_CFLAGS="$XML_CFLAGS -DLIBXML_STATIC"
-            AM_CFLAGS="$AM_CFLAGS -DLIBXML_STATIC"
+        XML_STATIC_CFLAGS="-DLIBXML_STATIC"
+        if test "x$enable_shared" = "xyes"; then
+            XML_PC_CFLAGS_PRIVATE="
+Cflags.private:"
+        else
+            XML_CFLAGS="$XML_STATIC_CFLAGS"
+            AM_CFLAGS="$AM_CFLAGS $XML_STATIC_CFLAGS"
         fi
         ;;
 esac
@@ -1121,9 +1127,11 @@ fi
 AC_SUBST(XML_PRIVATE_LIBS_NO_SHARED)
 AC_SUBST(XML_PC_PRIVATE)
 AC_SUBST(XML_PC_LIBS_PRIVATE)
+AC_SUBST(XML_PC_CFLAGS_PRIVATE)
 AM_SUBST_NOTMAKE(XML_PRIVATE_LIBS_NO_SHARED)
 AM_SUBST_NOTMAKE(XML_PC_PRIVATE)
 AM_SUBST_NOTMAKE(XML_PC_LIBS_PRIVATE)
+AM_SUBST_NOTMAKE(XML_PC_CFLAGS_PRIVATE)
 
 AC_SUBST(XML_PC_LIBS)
 AC_SUBST(XML_PC_REQUIRES)
@@ -1133,6 +1141,7 @@ AM_SUBST_NOTMAKE(XML_PC_REQUIRES)
 AC_SUBST(AM_CFLAGS)
 AC_SUBST(AM_LDFLAGS)
 AC_SUBST(XML_CFLAGS)
+AC_SUBST(XML_STATIC_CFLAGS)
 
 AC_SUBST(XML_LIBDIR)
 AC_SUBST(XML_LIBS)
diff --git a/libxml-2.0.pc.in b/libxml-2.0.pc.in
index 626f5e4a..07a75885 100644
--- a/libxml-2.0.pc.in
+++ b/libxml-2.0.pc.in
@@ -9,4 +9,4 @@ Version: @VERSION@
 Description: libXML library version2.
 Requires@XML_PC_PRIVATE@: @XML_PC_REQUIRES@
 Libs: @XML_LIBDIR@ @XML_LIBS@ @XML_PC_LIBS_PRIVATE@ @XML_PC_LIBS@ @LIBS@
-Cflags: @XML_INCLUDEDIR@ @XML_CFLAGS@
+Cflags: @XML_INCLUDEDIR@ @XML_PC_CFLAGS_PRIVATE@ @XML_STATIC_CFLAGS@