Build: Add integer version macro to jconfig.h
This makes it significantly easier to do conditional compilation based
on the libjpeg-turbo version.
Based on:
https://github.com/hasinoff/libjpeg-turbo/commit/e6d5b3e50b8b07488cb7b4d26ab2061685bc6875
https://github.com/hasinoff/libjpeg-turbo/commit/1394a89ba6f3cd8abb556c1b65bac4a5f09760d0
Closes #80
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1ad29f0..5924f0c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,6 +10,24 @@
project(libjpeg-turbo C)
set(VERSION 1.4.90)
+string(REPLACE "." ";" VERSION_TRIPLET ${VERSION})
+list(GET VERSION_TRIPLET 0 VERSION_MAJOR)
+list(GET VERSION_TRIPLET 1 VERSION_MINOR)
+list(GET VERSION_TRIPLET 2 VERSION_REVISION)
+function(pad_number NUMBER OUTPUT_LEN)
+ string(LENGTH "${${NUMBER}}" INPUT_LEN)
+ if(INPUT_LEN LESS OUTPUT_LEN)
+ math(EXPR ZEROES "${OUTPUT_LEN} - ${INPUT_LEN} - 1")
+ set(NUM ${${NUMBER}})
+ foreach(C RANGE ${ZEROES})
+ set(NUM "0${NUM}")
+ endforeach()
+ set(${NUMBER} ${NUM} PARENT_SCOPE)
+ endif()
+endfunction()
+pad_number(VERSION_MINOR 3)
+pad_number(VERSION_REVISION 3)
+set(LIBJPEG_TURBO_VERSION_NUMBER ${VERSION_MAJOR}${VERSION_MINOR}${VERSION_REVISION})
if(NOT WIN32)
message(FATAL_ERROR "Platform not supported by this build system. Use autotools instead.")
diff --git a/configure.ac b/configure.ac
index 9b2c573..c728ee8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -224,6 +224,16 @@
AC_DEFINE_UNQUOTED(LIBJPEG_TURBO_VERSION, [$VERSION], [libjpeg-turbo version])
+m4_define(version_triplet,m4_split(AC_PACKAGE_VERSION,[[.]]))
+m4_define(version_major,m4_argn(1,version_triplet))
+m4_define(version_minor,m4_argn(2,version_triplet))
+m4_define(version_revision,m4_argn(3,version_triplet))
+VERSION_MAJOR=version_major
+VERSION_MINOR=version_minor
+VERSION_REVISION=version_revision
+LIBJPEG_TURBO_VERSION_NUMBER=`printf "%d%03d%03d" $VERSION_MAJOR $VERSION_MINOR $VERSION_REVISION`
+AC_DEFINE_UNQUOTED(LIBJPEG_TURBO_VERSION_NUMBER, [$LIBJPEG_TURBO_VERSION_NUMBER], [libjpeg-turbo version in integer form])
+
VERSION_SCRIPT=yes
AC_ARG_ENABLE([ld-version-script],
AS_HELP_STRING([--disable-ld-version-script],
diff --git a/jconfig.h.in b/jconfig.h.in
index 42d86f2..02c12cc 100644
--- a/jconfig.h.in
+++ b/jconfig.h.in
@@ -6,6 +6,9 @@
/* libjpeg-turbo version */
#define LIBJPEG_TURBO_VERSION 0
+/* libjpeg-turbo version in integer form */
+#define LIBJPEG_TURBO_VERSION_NUMBER 0
+
/* Support arithmetic encoding */
#undef C_ARITH_CODING_SUPPORTED
diff --git a/win/jconfig.h.in b/win/jconfig.h.in
index 8783900..9d35121 100644
--- a/win/jconfig.h.in
+++ b/win/jconfig.h.in
@@ -3,6 +3,7 @@
#define JPEG_LIB_VERSION @JPEG_LIB_VERSION@
#define LIBJPEG_TURBO_VERSION @VERSION@
+#define LIBJPEG_TURBO_VERSION_NUMBER @LIBJPEG_TURBO_VERSION_NUMBER@
#cmakedefine C_ARITH_CODING_SUPPORTED
#cmakedefine D_ARITH_CODING_SUPPORTED
#cmakedefine MEM_SRCDST_SUPPORTED
