Update execute_process to avoid non-portable command usage

CMakeLists.txt

@@ -1,7 +1,8 @@
 cmake_minimum_required(VERSION 3.16.3) # Ubuntu 20.04 LTS default
 
 execute_process(
-  COMMAND head -c -1 ${CMAKE_CURRENT_SOURCE_DIR}/VERSION
+  COMMAND cat ${CMAKE_CURRENT_SOURCE_DIR}/VERSION
+  COMMAND tr -d \n
   OUTPUT_VARIABLE CURRENT_VERSION)
 
 project(meevax
@@ -49,7 +50,10 @@ execute_process(COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/script/unicode.sh --property
 execute_process(COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/script/unicode.sh --upcase      OUTPUT_VARIABLE ${PROJECT_NAME}_UNICODE_UPCASE)
 
 execute_process(
-  COMMAND head -c -1 ${CMAKE_CURRENT_SOURCE_DIR}/configure/help.txt
+  COMMAND cat ${CMAKE_CURRENT_SOURCE_DIR}/configure/help.txt
+  COMMAND tr \n \r
+  COMMAND sed s/\r$//
+  COMMAND tr \r \n
   OUTPUT_VARIABLE ${PROJECT_NAME}_HELP)
 
 file(WRITE ${CMAKE_CURRENT_SOURCE_DIR}/include/${PROJECT_NAME}/unicode/digit_value.hpp "${${PROJECT_NAME}_UNICODE_DIGIT_VALUE}")

README.md

@@ -90,7 +90,7 @@ Procedures for each standard are provided by the following R7RS-style libraries:
 cmake -B build -DCMAKE_BUILD_TYPE=Release
 cd build
 make package
-sudo apt install build/meevax_0.5.225_amd64.deb
+sudo apt install build/meevax_0.5.226_amd64.deb
 ```
 
 or
@@ -122,9 +122,9 @@ sudo rm -rf /usr/local/share/meevax
 
 | Target Name | Description
 |-------------|-------------
-| `all`       | Build shared-library `libmeevax.0.5.225.so` and executable `meevax`
+| `all`       | Build shared-library `libmeevax.0.5.226.so` and executable `meevax`
 | `test`      | Test executable `meevax`
-| `package`   | Generate debian package `meevax_0.5.225_amd64.deb`
+| `package`   | Generate debian package `meevax_0.5.226_amd64.deb`
 | `install`   | Copy files into `/usr/local` directly
 
 ## Usage

VERSION

@@ -1 +1 @@
-0.5.225
+0.5.226