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Fix zlib version parse

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Currently cmake scripttry to use regex to parse VER_MAJOR, VER_MINOR,
VER_REVISION from ZLIB_VERSION. However, ZLIB_VERSION is "1.3" which
means that there is no VER_REVISION.
You can reproduce using "-DBUILD_ZLIB=ON"
```
--     ZLib:                        zlib (ver 1.3.#define ZLIB_VERSION "1.3")
```

This patch add a new macro ocv_parse_header_version to extract version
information.
This commit is contained in:
Letu Ren
2023-12-22 11:39:57 +08:00
parent 8fc31ee9df
commit 3a600db4ab
2 changed files with 13 additions and 1 deletions
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12
cmake/OpenCVUtils.cmake
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@@ -1430,6 +1430,18 @@ macro(ocv_parse_header2 LIBNAME HDR_PATH VARNAME)
endif()
endmacro()
# set ${LIBNAME}_VERSION_STRING to ${LIBNAME}_VERSION without quotes
macro(ocv_parse_header_version LIBNAME HDR_PATH)
ocv_clear_vars(${LIBNAME}_VERSION_STRING)
set(${LIBNAME}_H "")
if(EXISTS "${HDR_PATH}")
file(STRINGS "${HDR_PATH}" ${LIBNAME}_H REGEX "^#define[ \t]+${LIBNAME}_VERSION[ \t]+\"[^\"]*\".*$" LIMIT_COUNT 1)
endif()
if(${LIBNAME}_H)
string(REGEX REPLACE "^.*[ \t]${LIBNAME}_VERSION[ \t]+\"([0-9\.]+)\"$" "\\1" ${LIBNAME}_VERSION_STRING "${${LIBNAME}_H}")
endif()
endmacro()
################################################################################################
# short command to setup source group
function(ocv_source_group group)