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+---
+short-description: Instructions on handling include directories
+...
+
+# Include directories
+
+Most `C`/`C++` projects have headers in different directories than
+sources. Thus you need to specify include directories. Let's assume
+that we are at some subdirectory and wish to add its `include`
+subdirectory to some target's search path. To create a include
+directory object we do this:
+
+```meson
+incdir = include_directories('include')
+```
+
+The `incdir` variable now holds a reference to the `include` subdir.
+Now we pass that as an argument to a build target:
+
+```meson
+executable('someprog', 'someprog.c', include_directories : incdir)
+```
+
+Note that these two commands can be given in any subdirectories and it
+will still work. Meson will keep track of the locations and generate
+proper compiler flags to make it all work.
+
+Another thing to note is that `include_directories` adds both the
+source directory and corresponding build directory to include path, so
+you don't have to care.