188 lines
6.1 KiB
Plaintext
188 lines
6.1 KiB
Plaintext
AC_INIT([libburn], [0.5.7], [http://libburnia-project.org])
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AC_PREREQ([2.50])
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dnl AC_CONFIG_HEADER([config.h])
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AC_CANONICAL_HOST
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AC_CANONICAL_TARGET
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AM_INIT_AUTOMAKE([subdir-objects])
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dnl Notes by ts A71207 - A81111 :
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dnl
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dnl Regrettably the meaning of the various version types was misunderstood
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dnl before version 0.4.1.
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dnl
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dnl In the past MAJOR.MINOR.MICRO versions led to the following SONAME numbers:
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dnl 0.2.2 = 2 , 0.2.3 = 3 , 0.2.6 = 6
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dnl 0.3.0 = 0 , 0.3.2 = 2 , 0.3.4 = 4 . 0.3.6 = 6 , 0.3.8 = 4
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dnl 0.4.0 = 0 (also released as SONAME 4)
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dnl
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dnl Meanwhile the following schemes are maintained in parallel:
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dnl
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dnl BURN_MAJOR_VERSION , BURN_MINOR_VERSION , BURN_MICRO_VERSION
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dnl are three small non-negative integers which describe the evolution
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dnl steps of the library.
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dnl Older applications are able to use younger libraries over
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dnl quite a long range of such steps. Some day, nevertheless,
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dnl compatibility might get terminated, after due notice.
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dnl
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dnl SONAME (libburn.so.4)
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dnl is a small positive integer which marks a family of compatible
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dnl evolution steps. Libraries with a particular SONAME allow a binary
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dnl with the same SONAME to start up. Any further compatibility check is to
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dnl be done by own runtime means. Especially *_version() calls in the API
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dnl which return BURN_MAJOR_VERSION, BURN_MINOR_VERSION, BURN_MICRO_VERSION.
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dnl See below.
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dnl
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dnl CURRENT, AGE, REVISION
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dnl are three integers used by libtool. CURRENT is positive, the others
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dnl non-negative. The use at runtime is not known yet. But libtool computes
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dnl at build time SONAME = CURRENT - AGE.
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dnl So this is a superspace of the SONAME version space. To avoid
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dnl ill SONAME, the value of CURRENT must be larger than AGE.
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dnl See also http://www.gnu.org/software/libtool/manual.html#Interfaces
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dnl
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dnl The name of the dynamic library will be libburn.so.$SONAME.$AGE.$REV .
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dnl In the terminology of this file:
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dnl CURRENT = LT_CURRENT
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dnl AGE = LT_AGE
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dnl REVISION= LT_REVISION
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dnl
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dnl Beginning with libburn-0.4.1 a rectified counting was introduced as
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dnl CURRENT=10, REVISION=1, AGE=6
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dnl This rectification declared that version to be binary compatible up
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dnl from libburn-0.3.4.
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dnl Real compatibility was given since libburn-0.3.2.
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dnl Beware of libburn-0.2.6 which had SONAME=6 and is not binary compatible.
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dnl Applications for libburn-0.2 to libburn-0.3.1 need recompilation but no
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dnl source code changes.
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dnl
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dnl Neatly versioned stable releases meanwhile:
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dnl 0.4.2 = libburn.so.4.7.0
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dnl 0.4.4 = libburn.so.4.9.0
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dnl 0.4.6 = libburn.so.4.11.0
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dnl 0.4.8 = libburn.so.4.13.0
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dnl 0.5.0 = libburn.so.4.15.0
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dnl 0.5.2 = libburn.so.4.17.0
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dnl 0.5.4 = libburn.so.4.19.0
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dnl 0.5.6 = libburn.so.4.21.0
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dnl
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dnl So LT_CURRENT, LT_REVISION and LT_AGE get set directly here.
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dnl SONAME of the emerging library is LT_CURRENT - LT_AGE.
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dnl The linker will do no finer checks. Especially no age range check for
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dnl the application binary. If SONAME matches, then the couple starts.
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dnl
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dnl Therefore at run time info is provided by libburn function burn_version().
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dnl It returns the major, minor and micro revision of the library.
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dnl Before using any API feature, a program should check for age.
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dnl
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dnl The variables BURN_*_VERSION are mere copies for informing libtool.
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dnl The true values which get issued and should be compared are macros
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dnl defined in libburn/libburn.h .
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dnl
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dnl Normally one can allow a program to run with a library which passed the
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dnl linker SONAME test and which is not older than the library it was
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dnl developed for. Library2 is younger than library1 if:
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dnl major2>major1 || (major2==major1 &&
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dnl (minor2>minor1 || (minor2==minor1 && micro2 > micro1)))
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dnl
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dnl If BURN_*_VERSION changes, be sure to change AC_INIT above to match.
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dnl
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dnl As said: Only copies. Original in libburn/libburn.h : burn_header_version_*
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BURN_MAJOR_VERSION=0
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BURN_MINOR_VERSION=5
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BURN_MICRO_VERSION=7
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BURN_VERSION=$BURN_MAJOR_VERSION.$BURN_MINOR_VERSION.$BURN_MICRO_VERSION
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AC_SUBST(BURN_MAJOR_VERSION)
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AC_SUBST(BURN_MINOR_VERSION)
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AC_SUBST(BURN_MICRO_VERSION)
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AC_SUBST(BURN_VERSION)
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dnl Libtool versioning
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LT_RELEASE=$BURN_MAJOR_VERSION.$BURN_MINOR_VERSION.$BURN_MICRO_VERSION
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dnl
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dnl ts A81112
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dnl ### This is the release version libburn-0.5.6 = libburn.so.4.21.0
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dnl This is the development version after above release version
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dnl LT_CURRENT++, LT_AGE++ has not yet happened.
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dnl ### LT_CURRENT++, LT_AGE++ has happened meanwhile.
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dnl
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dnl SONAME = 25 - 21 = 4 . Library name = libburn.so.4.21.0
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LT_CURRENT=25
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LT_AGE=21
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LT_REVISION=0
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LT_CURRENT_MINUS_AGE=`expr $LT_CURRENT - $LT_AGE`
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AC_SUBST(LT_RELEASE)
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AC_SUBST(LT_CURRENT)
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AC_SUBST(LT_REVISION)
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AC_SUBST(LT_AGE)
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AC_SUBST(LT_CURRENT_MINUS_AGE)
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dnl ts A71207: This is done only not to break any old components
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BURN_INTERFACE_AGE=$LT_REVISION
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BURN_BINARY_AGE=`expr $LT_AGE + $BURN_INTERFACE_AGE`
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AC_SUBST(BURN_INTERFACE_AGE)
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AC_SUBST(BURN_BINARY_AGE)
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AC_PREFIX_DEFAULT([/usr/local])
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test "$prefix" = "NONE" && prefix=$ac_default_prefix
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AM_MAINTAINER_MODE
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AM_PROG_CC_C_O
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AC_C_CONST
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AC_C_INLINE
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AC_C_BIGENDIAN
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dnl Large file support
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AC_SYS_LARGEFILE
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AC_FUNC_FSEEKO
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AC_CHECK_FUNC([fseeko])
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if test ! $ac_cv_func_fseeko; then
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AC_ERROR([Libburn requires largefile support.])
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fi
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AC_PROG_LIBTOOL
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AC_SUBST(LIBTOOL_DEPS)
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LIBTOOL="$LIBTOOL --silent"
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AC_PROG_INSTALL
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AC_CHECK_HEADERS()
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THREAD_LIBS=-lpthread
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AC_SUBST(THREAD_LIBS)
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TARGET_SHIZZLE
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AC_SUBST(ARCH)
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AC_SUBST(LIBBURN_ARCH_LIBS)
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dnl Add compiler-specific flags
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dnl See if the user wants aggressive optimizations of the code
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AC_ARG_ENABLE(debug,
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[ --enable-debug Disable aggressive optimizations [default=yes]],
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, enable_debug=yes)
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if test x$enable_debug != xyes; then
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if test x$GCC = xyes; then
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CFLAGS="$CFLAGS -O3"
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CFLAGS="$CFLAGS -fexpensive-optimizations"
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fi
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CFLAGS="$CFLAGS -DNDEBUG"
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else
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if test x$GCC = xyes; then
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CFLAGS="$CFLAGS -g -pedantic -Wall"
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fi
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CFLAGS="$CFLAGS -DDEBUG"
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fi
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AC_CONFIG_FILES([
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Makefile
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doc/doxygen.conf
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version.h
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libburn-1.pc
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])
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AC_OUTPUT
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