core: Use template instantiation to avoid to build all exposeType in the same translation unit

Author: jorisv

CMakeLists.txt

@@ -67,6 +67,8 @@ SET(${PROJECT_NAME}_HEADERS
 
 SET(${PROJECT_NAME}_SOURCES
   src/cppad.cpp
+  src/expose-type-double.cpp
+  src/expose-type-double-row-major.cpp
   )
 
 IF(BUILD_WITH_CPPAD_CODEGEN_BINDINGS)

src/cppad.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 INRIA
+ * Copyright 2021-2024 INRIA
  */
 
 #ifdef PYCPPAD_WITH_CPPAD_CODEGEN_BINDINGS
@@ -9,6 +9,14 @@
 #include "pycppad/cppad.hpp"
 #include "pycppad/cppad-scalar.hpp"
 
+
+// Use explicit template instantiation to build these
+// function in different translation unit and avoid consuming
+// too much memory on Windows
+typedef ::CppAD::AD<double> ADScalar;
+extern template void eigenpy::exposeType<ADScalar>();
+extern template void eigenpy::exposeType<ADScalar,Eigen::RowMajor>();
+
 namespace pycppad
 {
 

src/expose-type-double-row-major.cpp

@@ -0,0 +1,9 @@
+/*
+ * Copyright 2024 INRIA
+ */
+
+#include "pycppad/cppad.hpp"
+#include "pycppad/cppad-scalar.hpp"
+
+typedef ::CppAD::AD<double> ADScalar;
+template void eigenpy::exposeType<ADScalar, Eigen::RowMajor>();

src/expose-type-double.cpp

@@ -0,0 +1,9 @@
+/*
+ * Copyright 2024 INRIA
+ */
+
+#include "pycppad/cppad.hpp"
+#include "pycppad/cppad-scalar.hpp"
+
+typedef ::CppAD::AD<double> ADScalar;
+template void eigenpy::exposeType<ADScalar>();