digikam vs libjpeg-turbo

digikam can't compile on the current version of VineSeed (development/unstable version of Vine Linux, and soon-to-be Vine Linux 6.0).

I found the following lines on the CMakeLists.txt in the digikam source code:

# Extract version of libjpeg so that we can use the appropriate dir
# See bug #227313, #228483
FILE(READ "${JPEG_INCLUDE_DIR}/jpeglib.h" jpeglib_h_content)
STRING(REGEX REPLACE ".*#define +JPEG_LIB_VERSION +([0-9]+).*" "\\1" jpeglib_version "${jpeglib_h_content}")
MESSAGE(STATUS "Identified libjpeg version: ${jpeglib_version}")

IF ("${jpeglib_version}" LESS 80)
    SET(DIGIKAM_LIBJPEG_DIR libjpeg-62)
ELSE ("${jpeglib_version}" LESS 80)
    SET(DIGIKAM_LIBJPEG_DIR libjpeg-80)
ENDIF ("${jpeglib_version}" LESS 80)

while on the other hand VineSeed now has libjpeg-turbo instead of the ancient libjpeg6b.

jpeglib.h from libjpeg-turbo does NOT have the line starting from #define JPEG_LIB_VERSION: instead the declaration is in another header file jconfig.h like this:

#define JPEG_LIB_VERSION 62

So the trivial hack (until the upstream fix this tiny issue) is like this:

--- digikam-1.9.0/CMakeLists.txt.orig   2011-02-28 05:16:18.000000000 +0900
+++ digikam-1.9.0/CMakeLists.txt        2011-06-08 14:10:15.000000000 +0900
@@ -153,7 +153,9 @@
 
 # Extract version of libjpeg so that we can use the appropriate dir
 # See bug #227313, #228483
-FILE(READ "${JPEG_INCLUDE_DIR}/jpeglib.h" jpeglib_h_content)
+# VINE: better check jconfig.h in place of jpeglib.h on libjpeg-turbo
+# FILE(READ "${JPEG_INCLUDE_DIR}/jpeglib.h" jpeglib_h_content)
+FILE(READ "${JPEG_INCLUDE_DIR}/jconfig.h" jpeglib_h_content)
 STRING(REGEX REPLACE ".*#define +JPEG_LIB_VERSION +([0-9]+).*" "\\1" jpeglib_version "${jpeglib_h_content}")
 MESSAGE(STATUS "Identified libjpeg version: ${jpeglib_version}")