version files instead of hard code

Author: scivision

CMAKE_VERSION

@@ -0,0 +1 @@
+3.20.4

CMakeLists.txt

@@ -1,8 +1,11 @@
 cmake_minimum_required(VERSION 3.14...3.21)
 
+file(STRINGS ${CMAKE_CURRENT_SOURCE_DIR}/VERSION PROJECT_VERSION
+  REGEX "^([0-9]+\.[0-9]+\.[0-9]+)" LIMIT_INPUT 16 LENGTH_MAXIMUM 16 LIMIT_COUNT 1)
+
 project(CMakeDemos
 LANGUAGES C CXX Fortran
-VERSION 1.7.1
+VERSION ${PROJECT_VERSION}
 DESCRIPTION "Demonstrate CMake usage"
 HOMEPAGE_URL https://github.com/scivision/cmake-utils)
 

MANIFEST.in

@@ -0,0 +1,3 @@
+CMAKE_VERSION
+NINJA_VERSION
+VERSION

NINJA_VERSION

@@ -0,0 +1 @@
+1.10.2

README.md

@@ -82,7 +82,7 @@ The bootstrap method is only for Unix-like systems, while the CMake-based build
 Any platform for which Kitware doesn't distribute binaries use this script, including IBM Power and ARM.
 
 ```sh
-cmake_compile
+python -m cmakeutils.cmake_compile
 ```
 
 This downloads the latest CMake release source and builds from scratch.

VERSION

@@ -0,0 +1 @@
+1.9.0

build_cmake.cmake

@@ -23,7 +23,8 @@ if(NOT prefix)
 endif()
 
 if(NOT version)
-  set(version 3.20.3)
+  file(STRINGS ${CMAKE_CURRENT_LIST_DIR}/CMAKE_VERSION version
+   REGEX "^([0-9]+\.[0-9]+\.[0-9]+)" LIMIT_INPUT 16 LENGTH_MAXIMUM 16 LIMIT_COUNT 1)
 endif()
 
 if(version VERSION_LESS 2.8.12.2)

build_ninja.cmake

@@ -13,10 +13,13 @@ if(NOT prefix)
   get_filename_component(prefix ~ ABSOLUTE)
 endif()
 
-set(ver 1.10.2)
+if(NOT version)
+  file(STRINGS ${CMAKE_CURRENT_LIST_DIR}/NINJA_VERSION version
+   REGEX "^([0-9]+\.[0-9]+\.[0-9]+)" LIMIT_INPUT 16 LENGTH_MAXIMUM 16 LIMIT_COUNT 1)
+endif()
 
 set(host https://github.com/ninja-build/ninja/archive/)
-set(name v${ver}.tar.gz)
+set(name v${version}.tar.gz)
 
 function(checkup ninja)
 
@@ -33,16 +36,16 @@ endif()
 endfunction(checkup)
 
 get_filename_component(prefix ${prefix} ABSOLUTE)
-set(path ${prefix}/ninja-${ver})
+set(path ${prefix}/ninja-${version})
 
 find_program(ninja NAMES ninja PATHS ${path} PATH_SUFFIXES bin NO_DEFAULT_PATH)
 if(ninja)
-  message(STATUS "Ninja ${ver} already at ${ninja}")
+  message(STATUS "Ninja ${version} already at ${ninja}")
   checkup(${ninja})
   return()
 endif()
 
-message(STATUS "installing Ninja ${ver} to ${path}")
+message(STATUS "installing Ninja ${version} to ${path}")
 
 set(archive ${path}/${name})
 
@@ -59,7 +62,7 @@ if(NOT EXISTS ${archive})
   file(DOWNLOAD ${url} ${archive} INACTIVITY_TIMEOUT 15)
 endif()
 
-set(src_dir ${path}/ninja-${ver})
+set(src_dir ${path}/ninja-${version})
 
 if(NOT EXISTS ${src_dir}/ninjaCMakeLists.txt)
   message(STATUS "extracting ${archive} to ${path}")

install_cmake.cmake

@@ -22,7 +22,8 @@ if(NOT prefix)
 endif()
 
 if(NOT version)
-  set(version 3.20.3)
+  file(STRINGS ${CMAKE_CURRENT_LIST_DIR}/CMAKE_VERSION version
+   REGEX "^([0-9]+\.[0-9]+\.[0-9]+)" LIMIT_INPUT 16 LENGTH_MAXIMUM 16 LIMIT_COUNT 1)
 endif()
 
 if(version VERSION_LESS 3.7)

install_ninja.cmake

@@ -13,9 +13,12 @@ if(NOT prefix)
   get_filename_component(prefix ~ ABSOLUTE)
 endif()
 
-set(ver v1.10.2)
+if(NOT version)
+  file(STRINGS ${CMAKE_CURRENT_LIST_DIR}/NINJA_VERSION version
+   REGEX "^([0-9]+\.[0-9]+\.[0-9]+)" LIMIT_INPUT 16 LENGTH_MAXIMUM 16 LIMIT_COUNT 1)
+endif()
 
-set(host https://github.com/ninja-build/ninja/releases/download/${ver}/)
+set(host https://github.com/ninja-build/ninja/releases/download/${version}/)
 
 
 function(checkup ninja)
@@ -66,16 +69,16 @@ endif()
 set(name ${stem}.zip)
 
 get_filename_component(prefix ${prefix} ABSOLUTE)
-set(path ${prefix}/ninja-${ver})
+set(path ${prefix}/ninja-${version})
 
 find_program(ninja NAMES ninja PATHS ${path} PATH_SUFFIXES bin NO_DEFAULT_PATH)
 if(ninja)
-  message(STATUS "Ninja ${ver} already at ${ninja}")
+  message(STATUS "Ninja ${version} already at ${ninja}")
   checkup(${ninja})
   return()
 endif()
 
-message(STATUS "installing Ninja ${ver} to ${path}")
+message(STATUS "installing Ninja ${version} to ${path}")
 
 set(archive ${path}/${name})