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Get version information from taglib.h.

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This avoids duplication of the version information in both
CMakeLists.txt and taglib.h while keeping the possibility to
use something different from CMake.
This commit is contained in:
Urs Fleisch 2015-05-10 10:30:51 +02:00
parent 62ab41fa07
commit b5c0ab58ba
1 changed files with 14 additions and 3 deletions
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17
CMakeLists.txt
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@ -52,9 +52,20 @@ if (MSVC AND ENABLE_STATIC_RUNTIME)
endforeach(flag_var)
endif()
set(TAGLIB_LIB_MAJOR_VERSION "1")
set(TAGLIB_LIB_MINOR_VERSION "9")
set(TAGLIB_LIB_PATCH_VERSION "1")
# Read version information from file taglib/toolkit/taglib.h into variables
# TAGLIB_LIB_MAJOR_VERSION, TAGLIB_LIB_MINOR_VERSION, TAGLIB_LIB_PATCH_VERSION.
foreach(version_part MAJOR MINOR PATCH)
set(version_var_name "TAGLIB_${version_part}_VERSION")
file(STRINGS taglib/toolkit/taglib.h version_line
REGEX "^#define +${version_var_name}")
if(NOT version_line)
message(FATAL_ERROR "${version_var_name} not found in taglib.h")
endif()
string(REGEX MATCH "${version_var_name} +([^ ]+)" result ${version_line})
set(TAGLIB_LIB_${version_part}_VERSION ${CMAKE_MATCH_1})
endforeach(version_part)
# Only used to force cmake rerun when taglib.h changes.
configure_file(taglib/toolkit/taglib.h ${CMAKE_CURRENT_BINARY_DIR}/taglib.h.stamp)
set(TAGLIB_LIB_VERSION_STRING "${TAGLIB_LIB_MAJOR_VERSION}.${TAGLIB_LIB_MINOR_VERSION}.${TAGLIB_LIB_PATCH_VERSION}")