tests/freealut/configure.ac - external/github.com/kripken/emscripten - Git at Google

 ################################################################################
 # Process this file with autoconf to produce a configure script.
 ################################################################################

 AC_INIT([freealut library], [1.1.0], [openal-devel@opensource.creative.com], [freealut])
 AC_CONFIG_AUX_DIR([admin/autotools])
 AM_INIT_AUTOMAKE
 AC_PREREQ([2.56])
 AC_CONFIG_SRCDIR([AUTHORS])
 AC_CONFIG_HEADERS([config.h])

 # Compatibility hack for older autoconf versions
 m4_ifdef([AS_HELP_STRING], [], [AC_DEFUN([AS_HELP_STRING], [AC_HELP_STRING($][@)])])

 ################################################################################
 ## libtool shared library version.
 ################################################################################

 # Some information from the libtool info pages and the autobook regarding how to
 # handle the library version info:
 #
 # 1. Start with version information of `0:0:0' for each libtool library.
 #
 # 2. Update the version information only immediately before a public release of
 #    your software. More frequent updates are unnecessary, and only guarantee
 #    that the current interface number gets larger faster.
 #
 # 3. If the library source code has changed at all since the last update, then
 #    increment REVISION (`C:R:A' becomes `C:r+1:A'). This is a new revision of
 #    the current interface.
 #
 # 4. If any interfaces have been added, removed, or changed since the last
 #    update, increment CURRENT, and set REVISION to 0. This is the first
 #    revision of a new interface.
 #
 # 5. If any interfaces have been added since the last public release, then
 #    increment AGE. This release is backwards compatible with the previous
 #    release.
 #
 # 6. If any interfaces have been removed since the last public release, then set
 #    AGE to 0. This release has a new, but backwards incompatible interface.
 #
 # NEVER try to set the interface numbers so that they correspond to the release
 # number of your package. This is an abuse that only fosters misunderstanding of
 # the purpose of library versions. Furthermore, do not confuse those versions
 # with the version of the specification which is implemented.

 CURRENT=1
 REVISION=0
 AGE=1

 AC_SUBST([VERSIONINFO], ["$CURRENT:$REVISION:$AGE"])

 ################################################################################
 # Checks for programs.
 ################################################################################

 AC_PROG_CC
 AC_C_CONST
 ALUT_C__ATTRIBUTE__

 # Note that -fvisibility=... support implies __attribute__((visibility(...)))
 # support.
 ALUT_CHECK_FLAG([-fvisibility=hidden],
                 [AM_CFLAGS="$AM_CFLAGS -fvisibility=hidden"
                  AC_DEFINE([HAVE_GCC_VISIBILITY], [1],
                            [Define to 1 if we are using a GCC with symbol visibility support.])])

 # test_suite/test_retrostuff tests deprecated functions, but we don't want to
 # get compiler warnings because of that.
 ALUT_CHECK_FLAG([-Wno-deprecated-declarations],
                 [alut_wno_deprecated_declarations=yes],
                 [alut_wno_deprecated_declarations=no])
 AM_CONDITIONAL([WNO_DEPRECATED_DECLARATIONS],
                [test x"$alut_wno_deprecated_declarations" = xyes])

 AC_EXEEXT
 AC_LIBTOOL_WIN32_DLL
 AC_PROG_LIBTOOL
 AC_SUBST([LIBTOOL_DEPS])

 AC_DEFINE([ALUT_BUILD_LIBRARY], [1], [Define to 1 if you want to build the ALUT DLL.])

 # Checks for libraries. (not perfect yet)
 AC_SEARCH_LIBS([pthread_self], [pthread])
 AC_SEARCH_LIBS([alGetError], [openal32 openal])

 ################################################################################
 # Checks for header files.
 ################################################################################

 # We could possibly need struct timespec and random(), which are not ANSI.
 AC_DEFINE([_XOPEN_SOURCE], [500], [Define to 500 if Single Unix conformance is wanted, 600 for sixth revision.])

 # We might need nanosleep, which is a POSIX IEEE Std 1003.1b-1993 feature.
 AC_DEFINE([_POSIX_C_SOURCE], [199309], [Define to the POSIX version that should be used.])

 # Without __NO_CTYPE tolower and friends are macros which introduce a GLIBC 2.3
 # dependency. By defining this identifier we are currently backwards compatible
 # to GLIBC 2.1.3, which is a good thing. In addition, the macros lead to code
 # which triggers warnings with -Wunreachable-code.
 AC_DEFINE([__NO_CTYPE], [1], [Define to 1 if tolower and friends should not be macros.])

 AC_HEADER_STDC
 AC_CHECK_HEADERS([AL/alc.h AL/al.h basetsd.h ctype.h math.h stdio.h time.h windows.h])

 # Checks for library functions.
 ALUT_CHECK_FUNC([[@%:@include <time.h>]],
                 [nanosleep], [[((struct timespec*)0, (struct timespec*)0)]])

 ALUT_CHECK_FUNC([[@%:@include <unistd.h>]],
                 [usleep], [[(0)]])

 ALUT_CHECK_FUNC([[@%:@include <windows.h>]],
                 [Sleep], [[(0)]])

 ALUT_CHECK_FUNC([[@%:@include <sys/types.h>
                   @%:@include <sys/stat.h>
                   @%:@include <unistd.h>]],
                 [stat], [[("", (struct stat*)0)]])

 ALUT_CHECK_FUNC([[@%:@include <sys/types.h>
                   @%:@include <sys/stat.h>]],
                 [_stat], [[("", (struct _stat*)0)]])

 AC_CHECK_LIBM
 AC_SUBST([LIBM])

 ################################################################################
 # Build time configuration.
 ################################################################################

 AC_ARG_ENABLE([warnings],
 [AS_HELP_STRING([--enable-warnings],
                 [enable pedantic compiler warnings @<:@default=yes@:>@])])

 if test "x$enable_warnings" != xno; then
   # Doing it in two steps gives a nicer message...
   AX_CFLAGS_WARN_ALL_ANSI([flags])
   AM_CFLAGS="$AM_CFLAGS $flags"
 fi

 AC_ARG_ENABLE([more-warnings],
 [AS_HELP_STRING([--enable-more-warnings],
                 [enable even more compiler warnings @<:@default=no@:>@])])

 if test "x$enable_more_warnings" = xyes; then
   if test "x$enable_warnings" = xno; then
     AC_MSG_WARN([--enable-more-warnings ignored because of --disable-warnings])
   elif test "x$GCC" != xyes; then
     AC_MSG_WARN([--enable-more-warnings ignored because no GCC was detected])
   else
     # The long list of warning options below contains every GCC warning option
     # which is not automatically enabled with -Wall. The only exceptions to this
     # rule are:
     #
     #    -Wpadded:
     #      Perhaps good for optimizing out data layout, but not in general.
     #
     #    -Wconversion:
     #      Passing e.g. float as an argument is fine, we always have prototypes.
     #
     # Note that some older GCC versions give false positives about unreachable
     # code.
     AM_CFLAGS="$AM_CFLAGS -W -Waggregate-return -Wbad-function-cast -Wcast-align -Wcast-qual -Wdisabled-optimization -Wendif-labels -Wfloat-equal -Winline -Wlong-long -Wmissing-declarations -Wmissing-format-attribute -Wmissing-noreturn -Wmissing-prototypes -Wnested-externs -Wpacked -Wpointer-arith -Wredundant-decls -Wshadow -Wsign-compare -Wstrict-prototypes -Wundef -Wunreachable-code -Wwrite-strings"

     # Check for GCC 4.x-only warning options.
     ALUT_CHECK_FLAG([-Wdeclaration-after-statement],
                     [AM_CFLAGS="$AM_CFLAGS -Wdeclaration-after-statement"])
     ALUT_CHECK_FLAG([-Winvalid-pch],
                     [AM_CFLAGS="$AM_CFLAGS -Winvalid-pch"])
     ALUT_CHECK_FLAG([-Wmissing-field-initializers],
                     [AM_CFLAGS="$AM_CFLAGS -Wmissing-field-initializers"])
     # We cheat here a bit: The code generated by AC_LANG_PROGRAM triggers a
     # warning with -Wold-style-definition, so we assume that this flag is
     # supported whenever -Wvariadic-macros is.
     ALUT_CHECK_FLAG([-Wvariadic-macros],
                     [AM_CFLAGS="$AM_CFLAGS -Wvariadic-macros -Wold-style-definition"])
   fi
 fi

 AC_ARG_ENABLE([werror],
 [AS_HELP_STRING([--enable-werror],
                 [enable failure on all warnings @<:@default=no@:>@])])

 if test "x$enable_werror" = xyes; then
   if test "x$enable_warnings" = xno; then
     AC_MSG_WARN([--enable-werror ignored because of --disable-warnings])
   elif test "x$GCC" != xyes; then
     AC_MSG_WARN([--enable-werror ignored because no GCC was detected])
   else
     AM_CFLAGS="$AM_CFLAGS -Werror"
   fi
 fi

 AC_ARG_ENABLE([efence],
 [AS_HELP_STRING([--enable-efence],
                 [enable Electric Fence support @<:@default=no@:>@])])

 if test "x$enable_efence" = xyes; then
   alut_saved_LIBS=$LIBS
   LIBS="-lefence $LIBS"
   AC_LINK_IFELSE([AC_LANG_PROGRAM([extern int EF_ALIGNMENT;], [EF_ALIGNMENT = 8;])],
     [:],
     [AC_MSG_WARN([--enable-efence ignored because the Electric Fence library was not found.])
      LIBS=$alut_saved_LIBS])
 fi

 ################################################################################
 # Generate output.
 ################################################################################

 AC_SUBST([AM_CFLAGS])

 # NOTE: Do not break the following line, otherwise we are into CR/LF vs. LF
 # trouble! This is a buglet in autoconf IMHO, but easy to work around.
 AC_CONFIG_FILES([Makefile admin/Makefile admin/pkgconfig/Makefile admin/pkgconfig/freealut-config admin/pkgconfig/freealut.pc admin/RPM/freealut.spec examples/Makefile include/Makefile src/Makefile test_suite/Makefile])

 AC_OUTPUT
	################################################################################
	# Process this file with autoconf to produce a configure script.
	################################################################################

	AC_INIT([freealut library], [1.1.0], [openal-devel@opensource.creative.com], [freealut])
	AC_CONFIG_AUX_DIR([admin/autotools])
	AM_INIT_AUTOMAKE
	AC_PREREQ([2.56])
	AC_CONFIG_SRCDIR([AUTHORS])
	AC_CONFIG_HEADERS([config.h])

	# Compatibility hack for older autoconf versions
	m4_ifdef([AS_HELP_STRING], [], [AC_DEFUN([AS_HELP_STRING], [AC_HELP_STRING($][@)])])

	################################################################################
	## libtool shared library version.
	################################################################################

	# Some information from the libtool info pages and the autobook regarding how to
	# handle the library version info:
	#
	# 1. Start with version information of `0:0:0' for each libtool library.
	#
	# 2. Update the version information only immediately before a public release of
	# your software. More frequent updates are unnecessary, and only guarantee
	# that the current interface number gets larger faster.
	#
	# 3. If the library source code has changed at all since the last update, then
	# increment REVISION (`C:R:A' becomes `C:r+1:A'). This is a new revision of
	# the current interface.
	#
	# 4. If any interfaces have been added, removed, or changed since the last
	# update, increment CURRENT, and set REVISION to 0. This is the first
	# revision of a new interface.
	#
	# 5. If any interfaces have been added since the last public release, then
	# increment AGE. This release is backwards compatible with the previous
	# release.
	#
	# 6. If any interfaces have been removed since the last public release, then set
	# AGE to 0. This release has a new, but backwards incompatible interface.
	#
	# NEVER try to set the interface numbers so that they correspond to the release
	# number of your package. This is an abuse that only fosters misunderstanding of
	# the purpose of library versions. Furthermore, do not confuse those versions
	# with the version of the specification which is implemented.

	CURRENT=1
	REVISION=0
	AGE=1

	AC_SUBST([VERSIONINFO], ["$CURRENT:$REVISION:$AGE"])

	################################################################################
	# Checks for programs.
	################################################################################

	AC_PROG_CC
	AC_C_CONST
	ALUT_C__ATTRIBUTE__

	# Note that -fvisibility=... support implies __attribute__((visibility(...)))
	# support.
	ALUT_CHECK_FLAG([-fvisibility=hidden],
	[AM_CFLAGS="$AM_CFLAGS -fvisibility=hidden"
	AC_DEFINE([HAVE_GCC_VISIBILITY], [1],
	[Define to 1 if we are using a GCC with symbol visibility support.])])

	# test_suite/test_retrostuff tests deprecated functions, but we don't want to
	# get compiler warnings because of that.
	ALUT_CHECK_FLAG([-Wno-deprecated-declarations],
	[alut_wno_deprecated_declarations=yes],
	[alut_wno_deprecated_declarations=no])
	AM_CONDITIONAL([WNO_DEPRECATED_DECLARATIONS],
	[test x"$alut_wno_deprecated_declarations" = xyes])

	AC_EXEEXT
	AC_LIBTOOL_WIN32_DLL
	AC_PROG_LIBTOOL
	AC_SUBST([LIBTOOL_DEPS])

	AC_DEFINE([ALUT_BUILD_LIBRARY], [1], [Define to 1 if you want to build the ALUT DLL.])

	# Checks for libraries. (not perfect yet)
	AC_SEARCH_LIBS([pthread_self], [pthread])
	AC_SEARCH_LIBS([alGetError], [openal32 openal])

	################################################################################
	# Checks for header files.
	################################################################################

	# We could possibly need struct timespec and random(), which are not ANSI.
	AC_DEFINE([_XOPEN_SOURCE], [500], [Define to 500 if Single Unix conformance is wanted, 600 for sixth revision.])

	# We might need nanosleep, which is a POSIX IEEE Std 1003.1b-1993 feature.
	AC_DEFINE([_POSIX_C_SOURCE], [199309], [Define to the POSIX version that should be used.])

	# Without __NO_CTYPE tolower and friends are macros which introduce a GLIBC 2.3
	# dependency. By defining this identifier we are currently backwards compatible
	# to GLIBC 2.1.3, which is a good thing. In addition, the macros lead to code
	# which triggers warnings with -Wunreachable-code.
	AC_DEFINE([__NO_CTYPE], [1], [Define to 1 if tolower and friends should not be macros.])

	AC_HEADER_STDC
	AC_CHECK_HEADERS([AL/alc.h AL/al.h basetsd.h ctype.h math.h stdio.h time.h windows.h])

	# Checks for library functions.
	ALUT_CHECK_FUNC([[@%:@include <time.h>]],
	[nanosleep], [[((struct timespec)0, (struct timespec)0)]])

	ALUT_CHECK_FUNC([[@%:@include <unistd.h>]],
	[usleep], [[(0)]])

	ALUT_CHECK_FUNC([[@%:@include <windows.h>]],
	[Sleep], [[(0)]])

	ALUT_CHECK_FUNC([[@%:@include <sys/types.h>
	@%:@include <sys/stat.h>
	@%:@include <unistd.h>]],
	[stat], [[("", (struct stat*)0)]])

	ALUT_CHECK_FUNC([[@%:@include <sys/types.h>
	@%:@include <sys/stat.h>]],
	[_stat], [[("", (struct _stat*)0)]])

	AC_CHECK_LIBM
	AC_SUBST([LIBM])

	################################################################################
	# Build time configuration.
	################################################################################

	AC_ARG_ENABLE([warnings],
	[AS_HELP_STRING([--enable-warnings],
	[enable pedantic compiler warnings @<:@default=yes@:>@])])

	if test "x$enable_warnings" != xno; then
	# Doing it in two steps gives a nicer message...
	AX_CFLAGS_WARN_ALL_ANSI([flags])
	AM_CFLAGS="$AM_CFLAGS $flags"
	fi

	AC_ARG_ENABLE([more-warnings],
	[AS_HELP_STRING([--enable-more-warnings],
	[enable even more compiler warnings @<:@default=no@:>@])])

	if test "x$enable_more_warnings" = xyes; then
	if test "x$enable_warnings" = xno; then
	AC_MSG_WARN([--enable-more-warnings ignored because of --disable-warnings])
	elif test "x$GCC" != xyes; then
	AC_MSG_WARN([--enable-more-warnings ignored because no GCC was detected])
	else
	# The long list of warning options below contains every GCC warning option
	# which is not automatically enabled with -Wall. The only exceptions to this
	# rule are:
	#
	# -Wpadded:
	# Perhaps good for optimizing out data layout, but not in general.
	#
	# -Wconversion:
	# Passing e.g. float as an argument is fine, we always have prototypes.
	#
	# Note that some older GCC versions give false positives about unreachable
	# code.
	AM_CFLAGS="$AM_CFLAGS -W -Waggregate-return -Wbad-function-cast -Wcast-align -Wcast-qual -Wdisabled-optimization -Wendif-labels -Wfloat-equal -Winline -Wlong-long -Wmissing-declarations -Wmissing-format-attribute -Wmissing-noreturn -Wmissing-prototypes -Wnested-externs -Wpacked -Wpointer-arith -Wredundant-decls -Wshadow -Wsign-compare -Wstrict-prototypes -Wundef -Wunreachable-code -Wwrite-strings"

	# Check for GCC 4.x-only warning options.
	ALUT_CHECK_FLAG([-Wdeclaration-after-statement],
	[AM_CFLAGS="$AM_CFLAGS -Wdeclaration-after-statement"])
	ALUT_CHECK_FLAG([-Winvalid-pch],
	[AM_CFLAGS="$AM_CFLAGS -Winvalid-pch"])
	ALUT_CHECK_FLAG([-Wmissing-field-initializers],
	[AM_CFLAGS="$AM_CFLAGS -Wmissing-field-initializers"])
	# We cheat here a bit: The code generated by AC_LANG_PROGRAM triggers a
	# warning with -Wold-style-definition, so we assume that this flag is
	# supported whenever -Wvariadic-macros is.
	ALUT_CHECK_FLAG([-Wvariadic-macros],
	[AM_CFLAGS="$AM_CFLAGS -Wvariadic-macros -Wold-style-definition"])
	fi
	fi

	AC_ARG_ENABLE([werror],
	[AS_HELP_STRING([--enable-werror],
	[enable failure on all warnings @<:@default=no@:>@])])

	if test "x$enable_werror" = xyes; then
	if test "x$enable_warnings" = xno; then
	AC_MSG_WARN([--enable-werror ignored because of --disable-warnings])
	elif test "x$GCC" != xyes; then
	AC_MSG_WARN([--enable-werror ignored because no GCC was detected])
	else
	AM_CFLAGS="$AM_CFLAGS -Werror"
	fi
	fi

	AC_ARG_ENABLE([efence],
	[AS_HELP_STRING([--enable-efence],
	[enable Electric Fence support @<:@default=no@:>@])])

	if test "x$enable_efence" = xyes; then
	alut_saved_LIBS=$LIBS
	LIBS="-lefence $LIBS"
	AC_LINK_IFELSE([AC_LANG_PROGRAM([extern int EF_ALIGNMENT;], [EF_ALIGNMENT = 8;])],
	[:],
	[AC_MSG_WARN([--enable-efence ignored because the Electric Fence library was not found.])
	LIBS=$alut_saved_LIBS])
	fi

	################################################################################
	# Generate output.
	################################################################################

	AC_SUBST([AM_CFLAGS])

	# NOTE: Do not break the following line, otherwise we are into CR/LF vs. LF
	# trouble! This is a buglet in autoconf IMHO, but easy to work around.
	AC_CONFIG_FILES([Makefile admin/Makefile admin/pkgconfig/Makefile admin/pkgconfig/freealut-config admin/pkgconfig/freealut.pc admin/RPM/freealut.spec examples/Makefile include/Makefile src/Makefile test_suite/Makefile])

	AC_OUTPUT