fix build when system boost is mt and local boost is not mt

1 files changed, 25 insertions, 11 deletions

diff --git a/eigen2.pri b/eigen2.pri
index 44649f8..e188eaf 100644
--- a/eigen2.pri
+++ b/eigen2.pri
@@ -1,20 +1,34 @@
 eigen2 {
+
+  CONFIG(mingw-cross-env) {
+    EIGEN2_INCLUDEPATH = mingw-cross-env/include/eigen2
+  }
+
   # Optionally specify location of Eigen2 using the 
-  # EIGEN2DIR env. variable
-  EIGEN2_DIR = $$(EIGEN2DIR)
-  !isEmpty(EIGEN2_DIR) {
-    EIGEN2_INCLUDEPATH = $$EIGEN2_DIR
+  # OPENSCAD_LIBRARIES env. variable
+  isEmpty(EIGEN2_INCLUDEPATH) {
+    OPENSCAD_LIBRARIES_EIGEN2 = $$(OPENSCAD_LIBRARIES)
+    !isEmpty(OPENSCAD_LIBRARIES_EIGEN2) {
+      EIGEN2_INCLUDEPATH = $$OPENSCAD_LIBRARIES_EIGEN2/include/eigen2
+    }
   }
-  else {
-    CONFIG(mingw-cross-env) {
-      EIGEN2_INCLUDEPATH = mingw-cross-env/include/eigen2
-    } else {
-      freebsd-g++: EIGEN2_INCLUDEPATH *= /usr/local/include/eigen2
-      macx: EIGEN2_INCLUDEPATH *= /opt/local/include/eigen2
-      !macx:!freebsd-g++:!win32:EIGEN2_INCLUDEPATH *= /usr/include/eigen2
+
+  # Optionally specify location of Eigen2 using the 
+  # EIGEN2DIR env. variable
+  isEmpty(EIGEN2_INCLUDEPATH) {
+    EIGEN2_DIR = $$(EIGEN2DIR)
+    !isEmpty(EIGEN2_DIR):isEmpty(EIGEN2_INCLUDE_PATH) { 
+      message("EIGEN2: OPENSCAD_LIBRARIES NOT")
+      EIGEN2_INCLUDEPATH = $$EIGEN2_DIR
     }
   }
 
+  isEmpty(EIGEN2_INCLUDEPATH) {
+    freebsd-g++: EIGEN2_INCLUDEPATH *= /usr/local/include/eigen2
+    macx: EIGEN2_INCLUDEPATH *= /opt/local/include/eigen2
+    linux*: EIGEN2_INCLUDEPATH *= /usr/include/eigen2
+  }
+
   # eigen2 being under 'include/eigen2' needs special prepending
   QMAKE_INCDIR_QT = $$EIGEN2_INCLUDEPATH $$QMAKE_INCDIR_QT