build: streamline CMAKE_MODULE_PATH interaction

.gitignore

@@ -1,2 +1,6 @@
-build
+# clangd working space (see emacs+lsp)
+.cache
+# typical cmake build directory (source-tree-nephew)
+.build*
+# symlink to builddir/compile_commands.json;  should be set manually in dev sandbox
 compile_commands.json

CMakeLists.txt

@@ -4,7 +4,7 @@ cmake_minimum_required(VERSION 3.10)
 
 project(xo_pydistribution VERSION 1.0)
 
-include(xo_macros/xo-project-macros)
+include(cmake/xo-bootstrap-macros.cmake)
 
 xo_cxx_toplevel_options()
 

README.md

@@ -50,10 +50,10 @@ Assumes `xo-pydistribution` installed to `~/local2/lib`
 
 ```
 PYTHONPATH=~/local2/lib python
->>> import pydistribution
->>> dir(pydistribution)
+>>> import xo_pydistribution
+>>> dir(xo_pydistribution)
 ['Distribution', 'ExplicitDist', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__spec__', 'normalcdf']
->>> from pydistribution import *
+>>> from xo_pydistribution import *
 ```
 
 normal distribution

cmake/xo-bootstrap-macros.cmake

@@ -0,0 +1,12 @@
+if (("${CMAKE_MODULE_PATH}" STREQUAL "") OR ("${CMAKE_MODULE_PATH}" STREQUAL "prefix"))
+    # default to typical install location for xo-project-macros
+    set(CMAKE_MODULE_PATH ${CMAKE_INSTALL_PREFIX}/share/cmake)
+endif()
+
+message("-- CMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}")
+message("-- CMAKE_MODULE_PATH=${CMAKE_MODULE_PATH}")
+
+# needs to have been installed somewhere on CMAKE_MODULE_PATH,
+# (e.g. from xo-cmake with the same value for CMAKE_INSTALL_PREFIX)
+#
+include(xo_macros/xo-project-macros)

src/pydistribution/CMakeLists.txt

@@ -1,6 +1,6 @@
 # xo_pydistribution/src/pydistribution/CMakeLists.txt
 
-set(SELF_LIB pydistribution)
+set(SELF_LIB xo_pydistribution)
 set(SELF_SRCS pydistribution.cpp)
 
 xo_pybind11_library(${SELF_LIB} ${PROJECT_NAME}Targets ${SELF_SRCS})