this install with PROJECT_VERSION_SUFFIX (#20)

* this install with PROJECT_VERSION_SUFFIX

correct my fault if expression

* use option DISABLE_VERSION_SUFFIX YES instead of NO_VERSION_SUFFIX flag

* revert the to version without EXPORT_HEADER

* Simplify condition

Co-authored-by: Lars Melchior <TheLartians@users.noreply.github.com>

Author: ClausKlein

CMakeLists.txt

@@ -8,32 +8,38 @@ function(packageProject)
   include(GNUInstallDirs)
 
   cmake_parse_arguments(
-    PROJECT "NO_VERSION_SUFFIX"
-    "NAME;VERSION;INCLUDE_DIR;INCLUDE_DESTINATION;BINARY_DIR;COMPATIBILITY;VERSION_HEADER;NAMESPACE"
-    "DEPENDENCIES" ${ARGN}
+    PROJECT
+    ""
+    "NAME;VERSION;INCLUDE_DIR;INCLUDE_DESTINATION;BINARY_DIR;COMPATIBILITY;VERSION_HEADER;NAMESPACE;DISABLE_VERSION_SUFFIX"
+    "DEPENDENCIES"
+    ${ARGN}
   )
 
-  if(DEFINED PROJECT_NO_VERSION_SUFFIX)
+  # optional feature: TRUE or FALSE or UNDEFINED! These variables will then hold the respective
+  # value from the argument list or be undefined if the associated one_value_keyword could not be
+  # found.
+  if(PROJECT_DISABLE_VERSION_SUFFIX)
     unset(PROJECT_VERSION_SUFFIX)
   else()
     set(PROJECT_VERSION_SUFFIX -${PROJECT_VERSION})
   endif()
 
-  # handle default arguments
+  # handle default arguments:
   if(NOT DEFINED PROJECT_COMPATIBILITY)
     set(PROJECT_COMPATIBILITY AnyNewerVersion)
   endif()
 
-  # we wanto to automatically add :: to our namespace, so only append if a namespace was given in
-  # the first place we also provide an alias to ensure that local and installed versions have the
-  # same name
+  # we want to automatically add :: to our namespace, so only append if a namespace was given in the
+  # first place we also provide an alias to ensure that local and installed versions have the same
+  # name
   if(DEFINED PROJECT_NAMESPACE)
     set(PROJECT_NAMESPACE ${PROJECT_NAMESPACE}::)
     add_library(${PROJECT_NAMESPACE}${PROJECT_NAME} ALIAS ${PROJECT_NAME})
   endif()
 
   if(DEFINED PROJECT_VERSION_HEADER)
     set(PROJECT_VERSION_INCLUDE_DIR ${PROJECT_BINARY_DIR}/PackageProjectInclude)
+
     string(TOUPPER ${PROJECT_NAME} UPPERCASE_PROJECT_NAME)
     configure_file(
       ${PACKAGE_PROJECT_ROOT_PATH}/version.h.in

README.md

@@ -16,7 +16,7 @@ See [here](https://github.com/TheLartians/ModernCppStarter/blob/master/CMakeList
 CPMAddPackage(
   NAME PackageProject.cmake
   GITHUB_REPOSITORY TheLartians/PackageProject.cmake
-  VERSION 1.4.1
+  VERSION 1.5.1
 )
 
 packageProject(
@@ -33,15 +33,15 @@ packageProject(
   # semicolon separated list of the project's dependencies
   DEPENDENCIES "fmt 7.1.3;cxxopts 2.2.0"
   # (optional) create a header containing the version info
-  # note that the path should be lowercase
+  # Note: that the path to headers should be lowercase
   VERSION_HEADER "${PROJECT_NAME}/version.h"
-  # (optional) install your library with a namespace (do NOT add extra '::')
+  # (optional) install your library with a namespace (Note: do NOT add extra '::')
   NAMESPACE ${PROJECT_NAMESPACE}
   # (optional) define the project's version compatibility, defaults to `AnyNewerVersion`
   # supported values: `AnyNewerVersion|SameMajorVersion|SameMinorVersion|ExactVersion`
   COMPATIBILITY AnyNewerVersion
-  # (optional) flag to disable the versioning of install destinations
-  NO_VERSION_SUFFIX
+  # (optional) option to disable the versioning of install destinations
+  DISABLE_VERSION_SUFFIX YES
 )
 ```