annotate src/libvorbis-1.3.3/configure.ac @ 83:ae30d91d2ffe

Replace these with versions built using an older toolset (so as to avoid ABI compatibilities when linking on Ubuntu 14.04 for packaging purposes)

dnl Process this file with autoconf to produce a configure script

dnl ------------------------------------------------
dnl Initialization and Versioning
dnl ------------------------------------------------


AC_INIT([libvorbis],[1.3.3],[[e-mail]])

AC_CONFIG_SRCDIR([lib/mdct.c])

AC_CANONICAL_TARGET([])

AM_INIT_AUTOMAKE($PACKAGE_NAME,$PACKAGE_VERSION)
AM_MAINTAINER_MODE
AM_CONFIG_HEADER([config.h])

dnl Add parameters for aclocal
AC_SUBST(ACLOCAL_AMFLAGS, "-I m4")

dnl Library versioning
dnl - library source changed -> increment REVISION
dnl - interfaces added/removed/changed -> increment CURRENT, REVISION = 0
dnl - interfaces added -> increment AGE
dnl - interfaces removed -> AGE = 0

V_LIB_CURRENT=4
V_LIB_REVISION=6
V_LIB_AGE=4

VF_LIB_CURRENT=6
VF_LIB_REVISION=5
VF_LIB_AGE=3

VE_LIB_CURRENT=2
VE_LIB_REVISION=9
VE_LIB_AGE=0

AC_SUBST(V_LIB_CURRENT)
AC_SUBST(V_LIB_REVISION)
AC_SUBST(V_LIB_AGE)
AC_SUBST(VF_LIB_CURRENT)
AC_SUBST(VF_LIB_REVISION)
AC_SUBST(VF_LIB_AGE)
AC_SUBST(VE_LIB_CURRENT)
AC_SUBST(VE_LIB_REVISION)
AC_SUBST(VE_LIB_AGE)

dnl --------------------------------------------------  
dnl Check for programs
dnl --------------------------------------------------  

dnl save $CFLAGS since AC_PROG_CC likes to insert "-g -O2"
dnl if $CFLAGS is blank
cflags_save="$CFLAGS"
AC_PROG_CC
AC_PROG_CPP
CFLAGS="$cflags_save"

AC_C_INLINE

AC_LIBTOOL_WIN32_DLL
AC_PROG_LIBTOOL
AM_PROG_CC_C_O

dnl Check for doxygen
if test "x$enable_docs" = xyes; then
  AC_CHECK_PROG(HAVE_DOXYGEN, doxygen, true, false)
  if test $HAVE_DOXYGEN = "false"; then
    AC_MSG_WARN([*** doxygen not found, API documentation will not be built])
  fi
else
  HAVE_DOXYGEN=false
fi
AM_CONDITIONAL(HAVE_DOXYGEN,$HAVE_DOXYGEN)

dnl latex tools for the specification document
AC_ARG_ENABLE(docs,
	AC_HELP_STRING([--enable-docs], [build the documentation]))

if test "x$enable_docs" = xyes; then
  AC_CHECK_PROGS([PDFLATEX], pdflatex, [/bin/false])
  AC_CHECK_PROGS([HTLATEX], htlatex, [/bin/false])
  if test "x$PDFLATEX" = x/bin/false || test "x$HTLATEX" = x/bin/false; then
    enable_docs=no
    AC_MSG_WARN([Documentation will not be built!])
  fi
fi

AM_CONDITIONAL(BUILD_DOCS, [test "x$enable_docs" = xyes])

AC_ARG_ENABLE(examples, 
  AS_HELP_STRING([--enable-examples], [build the examples])) 
 	
AM_CONDITIONAL(BUILD_EXAMPLES, [test "x$enable_examples" = xyes]) 

dnl --------------------------------------------------
dnl Set build flags based on environment
dnl --------------------------------------------------

dnl Set some target options

cflags_save="$CFLAGS"
if test -z "$GCC"; then
	case $host in 
	*-*-irix*)
		dnl If we're on IRIX, we wanna use cc even if gcc 
		dnl is there (unless the user has overriden us)...
		if test -z "$CC"; then
			CC=cc
		fi
		DEBUG="-g -signed" 
		CFLAGS="-O2 -w -signed"
		PROFILE="-p -g3 -O2 -signed" ;;
	sparc-sun-solaris*)
		DEBUG="-v -g"
		CFLAGS="-xO4 -fast -w -fsimple -native -xcg92"
		PROFILE="-v -xpg -g -xO4 -fast -native -fsimple -xcg92 -Dsuncc" ;;
	*)
		DEBUG="-g"
		CFLAGS="-O"
		PROFILE="-g -p" ;;
        esac
else

	AC_MSG_CHECKING([GCC version])
	GCC_VERSION=`$CC -dumpversion`
	AC_MSG_RESULT([$GCC_VERSION])
	case $host in 
	*86-*-linux*)
		DEBUG="-g -Wall -Wextra -D_REENTRANT -D__NO_MATH_INLINES -fsigned-char"
		CFLAGS="-O20 -ffast-math -mno-ieee-fp -D_REENTRANT -fsigned-char"
#              	PROFILE="-Wall -Wextra -pg -g -O20 -ffast-math -D_REENTRANT -fsigned-char -fno-inline -static"
		PROFILE="-Wall -Wextra -pg -g -O20 -ffast-math -mno-ieee-fp -D_REENTRANT -fsigned-char -fno-inline"

		# glibc < 2.1.3 has a serious FP bug in the math inline header
		# that will cripple Vorbis.  Look to see if the magic FP stack
		# clobber is missing in the mathinline header, thus indicating
		# the buggy version

		AC_EGREP_CPP(log10.*fldlg2.*fxch,[
				#define __LIBC_INTERNAL_MATH_INLINES 1
			     	#define __OPTIMIZE__
				#include <math.h>
				],bad=maybe,bad=no)
		if test ${bad} = "maybe" ;then
		      AC_EGREP_CPP(log10.*fldlg2.*fxch.*st\([[0123456789]]*\),
					[
					#define __LIBC_INTERNAL_MATH_INLINES 1
				     	#define __OPTIMIZE__
					#include <math.h>
					],bad=no,bad=yes)
		fi
 		if test ${bad} = "yes" ;then
 AC_MSG_WARN([                                                        ])
 AC_MSG_WARN([********************************************************])
 AC_MSG_WARN([* The glibc headers on this machine have a serious bug *])
 AC_MSG_WARN([* in /usr/include/bits/mathinline.h  This bug affects  *])
 AC_MSG_WARN([* all floating point code, not just Ogg, built on this *])
 AC_MSG_WARN([* machine.  Upgrading to glibc 2.1.3 is strongly urged *])
 AC_MSG_WARN([* to correct the problem.  Note that upgrading glibc   *])
 AC_MSG_WARN([* will not fix any previously built programs; this is  *])
 AC_MSG_WARN([* a compile-time time bug.                             *])
 AC_MSG_WARN([* To work around the problem for this build of Ogg,    *])
 AC_MSG_WARN([* autoconf is disabling all math inlining.  This will  *])
 AC_MSG_WARN([* hurt Ogg performace but is necessary for an Ogg that *])
 AC_MSG_WARN([* will actually work.  Once glibc is upgraded, rerun   *])
 AC_MSG_WARN([* configure and make to build with inlining.           *])
 AC_MSG_WARN([********************************************************])
 AC_MSG_WARN([                                                        ])

  		CFLAGS=${OPT}" -D__NO_MATH_INLINES"
  		PROFILE=${PROFILE}" -D__NO_MATH_INLINES"
  		fi;;
        powerpc-*-linux*spe) 
 	        DEBUG="-g -Wall -Wextra -D_REENTRANT -D__NO_MATH_INLINES" 
 	        CFLAGS="-O3 -Wall -Wextra -ffast-math -mfused-madd -D_REENTRANT" 
 	        PROFILE="-pg -g -O3 -ffast-math -mfused-madd -D_REENTRANT";; 
	powerpc-*-linux*)
		DEBUG="-g -Wall -Wextra -D_REENTRANT -D__NO_MATH_INLINES"
		CFLAGS="-O3 -Wall -Wextra -ffast-math -mfused-madd -mcpu=750 -D_REENTRANT"
		PROFILE="-pg -g -O3 -ffast-math -mfused-madd -mcpu=750 -D_REENTRANT";;
	*-*-linux*)
		DEBUG="-g -Wall -Wextra -D_REENTRANT -D__NO_MATH_INLINES -fsigned-char"
		CFLAGS="-O20 -Wall -Wextra -ffast-math -D_REENTRANT -fsigned-char"
		PROFILE="-pg -g -O20 -ffast-math -D_REENTRANT -fsigned-char";;
	sparc-sun-*)
		sparc_cpu=""
		AC_MSG_CHECKING([if gcc supports -mv8])
		old_cflags="$CFLAGS"
		CFLAGS="$CFLAGS -mv8"
		AC_TRY_COMPILE(, [return 0;], [
			AC_MSG_RESULT([yes])
			sparc_cpu="-mv8"
		])
		CFLAGS="$old_cflags"
		DEBUG="-g -Wall -Wextra -D__NO_MATH_INLINES -fsigned-char $sparc_cpu"
		CFLAGS="-O20 -Wall -Wextra -ffast-math -D__NO_MATH_INLINES -fsigned-char $sparc_cpu"
		PROFILE="-pg -g -O20 -D__NO_MATH_INLINES -fsigned-char $sparc_cpu" ;;
	*-*-darwin*)
		DEBUG="-DDARWIN -fno-common -force_cpusubtype_ALL -Wall -g -O0 -fsigned-char"
		CFLAGS="-DDARWIN -fno-common -force_cpusubtype_ALL -Wall -g -O4 -ffast-math -fsigned-char"
		PROFILE="-DDARWIN -fno-common -force_cpusubtype_ALL -Wall -g -pg -O4 -ffast-math -fsigned-char";;
	*-*-os2*)
		# Use -W instead of -Wextra because gcc on OS/2 is an old version.
		DEBUG="-g -Wall -W -D_REENTRANT -D__NO_MATH_INLINES -fsigned-char"
		CFLAGS="-O20 -Wall -W -ffast-math -D_REENTRANT -fsigned-char"
		PROFILE="-pg -g -O20 -ffast-math -D_REENTRANT -fsigned-char";;
 	*)
		DEBUG="-g -Wall -Wextra -D__NO_MATH_INLINES -fsigned-char"
		CFLAGS="-O20 -Wall -Wextra -D__NO_MATH_INLINES -fsigned-char"
		PROFILE="-O20 -g -pg -D__NO_MATH_INLINES -fsigned-char" ;;
        esac

        AC_ADD_CFLAGS([-Wdeclaration-after-statement])
fi
CFLAGS="$CFLAGS $cflags_save"

dnl --------------------------------------------------
dnl Check for headers
dnl --------------------------------------------------

AC_CHECK_HEADER(memory.h,CFLAGS="$CFLAGS -DUSE_MEMORY_H",:)

dnl --------------------------------------------------
dnl Check for typedefs, structures, etc
dnl --------------------------------------------------

dnl none

dnl --------------------------------------------------
dnl Check for libraries
dnl --------------------------------------------------

AC_CHECK_LIB(m, cos, VORBIS_LIBS="-lm", VORBIS_LIBS="")
AC_CHECK_LIB(pthread, pthread_create, pthread_lib="-lpthread", :)

PKG_PROG_PKG_CONFIG

HAVE_OGG=no
if test "x$PKG_CONFIG" != "x"
then
  PKG_CHECK_MODULES(OGG, ogg >= 1.0, HAVE_OGG=yes, HAVE_OGG=no)
fi
if test "x$HAVE_OGG" = "xno"
then
  dnl fall back to the old school test
  XIPH_PATH_OGG(, AC_MSG_ERROR(must have Ogg installed!))
  libs_save=$LIBS
  LIBS="$OGG_LIBS $VORBIS_LIBS"
  AC_CHECK_FUNC(oggpack_writealign, , AC_MSG_ERROR(Ogg >= 1.0 required !))
  LIBS=$libs_save
fi

dnl --------------------------------------------------
dnl Check for library functions
dnl --------------------------------------------------

AC_FUNC_ALLOCA
AC_FUNC_MEMCMP

dnl --------------------------------------------------
dnl Do substitutions
dnl --------------------------------------------------

AC_SUBST(VORBIS_LIBS)
AC_SUBST(DEBUG)
AC_SUBST(PROFILE)
AC_SUBST(pthread_lib)

dnl The following line causes the libtool distributed with the source
dnl to be replaced if the build system has a more recent version.
AC_SUBST(LIBTOOL_DEPS)

AC_OUTPUT([
Makefile
m4/Makefile
lib/Makefile
lib/modes/Makefile
lib/books/Makefile
lib/books/coupled/Makefile
lib/books/uncoupled/Makefile
lib/books/floor/Makefile
doc/Makefile doc/vorbisfile/Makefile doc/vorbisenc/Makefile doc/libvorbis/Makefile
doc/Doxyfile
include/Makefile include/vorbis/Makefile
examples/Makefile
test/Makefile
vq/Makefile
libvorbis.spec
vorbis.pc
vorbisenc.pc
vorbisfile.pc
vorbis-uninstalled.pc
vorbisenc-uninstalled.pc
vorbisfile-uninstalled.pc
])