Hi,
I'm trying to create a header file containing version number details but
am not sure if the following behaviour is expected or a bug.
Simplified example has 2 files
==> CMakeLists.txt <==
cmake_minimum_required(VERSION 3.11)
project (
VersionTest
VERSION 1.0.4
)
configure_file (
"${PROJECT_SOURCE_DIR}/config.h.in"
"${PROJECT_BINARY_DIR}/config.h"
@ONLY
)
==> config.h.in <==
#cmakedefine VersionTest_VERSION_MAJOR @VersionTest_VERSION_MAJOR@
#cmakedefine VersionTest_VERSION_MINOR @VersionTest_VERSION_MINOR@
#define VersionTest_VERSION_MINOR @VersionTest_VERSION_MINOR@
Running cmake creates the output file as required but it has the
following contents
==> config.h <==
#define VersionTest_VERSION_MAJOR 1
/* #undef VersionTest_VERSION_MINOR */
#define VersionTest_VERSION_MINOR 0
Looking at the manual
(https://cmake.org/cmake/help/v3.12/command/configure_file.html), this
appears to be because the number '0' is considered false by the if()
command, however '0' is valid within a version number, so perhaps should
not be considered false in this context.
Is this a known issue? Is it recommended to use #define rather than
#cmakedefine for these types of files?
Thanks
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