configure.ac - third_party/libplist - Git at Google

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

 AC_PREREQ(2.68)
 AC_INIT([libplist], [m4_esyscmd(./git-version-gen $RELEASE_VERSION)], [https://github.com/libimobiledevice/libplist/issues], [], [https://libimobiledevice.org])
 AM_INIT_AUTOMAKE([dist-bzip2 no-dist-gzip check-news])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES])
 AC_CONFIG_SRCDIR([src/])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])

 dnl libtool versioning
 # +1 : 0 : +1  == adds new functions to the interface
 # +1 : 0 : 0   == changes or removes functions (changes include both
 #                 changes to the signature and the semantic)
 #  ? :+1 : ?   == just internal changes
 # CURRENT : REVISION : AGE
 LIBPLIST_SO_VERSION=7:0:3

 AC_SUBST(LIBPLIST_SO_VERSION)

 # Check if we have a version defined
 if test -z $PACKAGE_VERSION; then
   AC_MSG_ERROR([PACKAGE_VERSION is not defined. Make sure to configure a source tree checked out from git or that .tarball-version is present.])
 fi

 # Checks for programs.
 AC_PROG_CC
 AC_PROG_CXX

 # AC_PROG_CXX will return "g++" even if no c++ compiler is installed
 AC_LANG_PUSH([C++])
 AC_MSG_CHECKING([whether $CXX is available and compiles a program])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
                   [AC_MSG_RESULT([yes])],
                   [AC_MSG_RESULT([no])
                    AC_MSG_ERROR([C++ compiler not available or unable to compile])])
 AC_LANG_POP

 AM_PROG_CC_C_O
 LT_INIT

 # Checks for header files.
 AC_CHECK_HEADERS([stdint.h stdlib.h string.h])

 # Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
 AC_TYPE_SIZE_T
 AC_TYPE_SSIZE_T
 AC_TYPE_UINT16_T
 AC_TYPE_UINT32_T
 AC_TYPE_UINT8_T

 # Checks for library functions.
 AC_CHECK_FUNCS([strdup strndup strerror gmtime_r localtime_r timegm strptime memmem])

 # Checking endianness
 AC_C_BIGENDIAN([AC_DEFINE([__BIG_ENDIAN__], [1], [big endian])],
                [AC_DEFINE([__LITTLE_ENDIAN__], [1], [little endian])])


 # Check for operating system
 AC_MSG_CHECKING([for platform-specific build settings])
 case ${host_os} in
   *mingw32*|*cygwin*)
     AC_MSG_RESULT([${host_os}])
     win32=true
     ;;
   darwin*|*android*)
     AC_MSG_RESULT([${host_os}])
     ;;
   *)
     AC_MSG_RESULT([${host_os}])
     AX_PTHREAD([], [AC_MSG_ERROR([pthread is required to build libplist])])
     AC_CHECK_LIB(pthread, [pthread_once], [], [AC_MSG_ERROR([pthread with pthread_once required to build libplist])])
     ;;
 esac
 AM_CONDITIONAL(WIN32, test x$win32 = xtrue)

 AC_SEARCH_LIBS([fmin],[m])

 # Check if the C compiler supports __attribute__((constructor))
 AC_CACHE_CHECK([wether the C compiler supports constructor/destructor attributes],
   ac_cv_attribute_constructor, [
   ac_cv_attribute_constructor=no
   AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
     [[
       #ifndef __has_attribute
         #define __has_attribute(x) 0
       #endif
       #if !__has_attribute(constructor)
         #error No constructor attribute
       #endif
       #if !__has_attribute(destructor)
         #error No destructor attribute
       #endif
       static void __attribute__((constructor)) test_constructor(void) {
       }
       static void __attribute__((destructor)) test_destructor(void) {
       }
     ]], [])],
     [ac_cv_attribute_constructor=yes]
   )]
 )
 if test "$ac_cv_attribute_constructor" = "yes"; then
   AC_DEFINE(HAVE_ATTRIBUTE_CONSTRUCTOR, 1, [Define if the C compiler supports constructor/destructor attributes])
 fi

 # Check if struct tm has a tm_gmtoff member
 AC_CACHE_CHECK(for tm_gmtoff in struct tm, ac_cv_struct_tm_gmtoff,
   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
       #include <time.h>
     ], [
       struct tm tm;
       tm.tm_gmtoff = 1;
     ])],
     [ac_cv_struct_tm_gmtoff=yes],
     [ac_cv_struct_tm_gmtoff=no]
   )
 )

 if (test "$ac_cv_struct_tm_gmtoff" = "yes"); then
   AC_DEFINE(HAVE_TM_TM_GMTOFF, 1, [Define if struct tm has a tm_gmtoff member])
 fi

 # Check if struct tm has a tm_zone member
 AC_CACHE_CHECK(for tm_zone in struct tm, ac_cv_struct_tm_zone,
   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
       #include <time.h>
     ], [
       struct tm tm;
       tm.tm_zone = (char*)"UTC";
     ])],
     [ac_cv_struct_tm_zone=yes],
     [ac_cv_struct_tm_zone=no]
   )
 )

 if (test "$ac_cv_struct_tm_zone" = "yes"); then
 	AC_DEFINE(HAVE_TM_TM_ZONE, 1, [Define if struct tm has a tm_zone member])
 fi

 # Cython Python Bindings
 AC_ARG_WITH([cython],
             [AS_HELP_STRING([--without-cython],
             [build Python bindings using Cython (default is yes)])],
             [build_cython=false],
             [build_cython=true])
 if test "$build_cython" = "true"; then
             AC_PROG_CYTHON([0.17.0])
             if [test "x$CYTHON" != "xfalse"]; then
               AM_PATH_PYTHON([2.3], [CYTHON_PYTHON])
             fi
 else
             CYTHON=false
 fi
 if [test "x$CYTHON" != "xfalse"]; then
             PKG_PROG_PKG_CONFIG
             AC_MSG_CHECKING([for libplist Cython bindings])
             if test -x "$PKG_CONFIG"; then
                 CYTHON_PLIST_INCLUDE_DIR=$($PKG_CONFIG --variable=includedir libplist-2.0)/plist/cython
             fi
             if [test ! -d "$CYTHON_PLIST_INCLUDE_DIR"]; then
                 CYTHON_PLIST_INCLUDE_DIR=.
                 cython_python_bindings=yes
                 AC_MSG_RESULT([Using built-in libplist Cython bindings (assuming this is a first build)])
             else
                 AC_SUBST([CYTHON_PLIST_INCLUDE_DIR])
                 AC_MSG_RESULT([$CYTHON_PLIST_INCLUDE_DIR])
                 cython_python_bindings=yes
             fi
 else
             cython_python_bindings=no
 fi
 AM_CONDITIONAL([HAVE_CYTHON],[test "x$cython_python_bindings" = "xyes"])

 AS_COMPILER_FLAGS(GLOBAL_CFLAGS, "-Wall -Wextra -Wredundant-decls -Wshadow -Wpointer-arith  -Wwrite-strings -Wswitch-default -Wno-unused-parameter -Wno-strict-aliasing $PTHREAD_CFLAGS")
 GLOBAL_LDFLAGS="$PTHREAD_LIBS"

 AC_ARG_ENABLE(debug,
 AS_HELP_STRING([--enable-debug],
                [build debug message output code (default is no)]),
 [case "${enableval}" in
              yes) debug=yes ;;
              no)  debug=no ;;
              *)   AC_MSG_ERROR([bad value ${enableval} for --enable-debug]) ;;
 esac],
 [debug=no])

 if (test "x$debug" = "xyes"); then
        AC_DEFINE(DEBUG, 1, [Define if debug message output code should be built.])
        GLOBAL_CFLAGS+=" -g"
 fi

 if test "x$enable_static" = "xyes" -a "x$enable_shared" = "xno"; then
 	GLOBAL_CFLAGS+=" -DLIBPLIST_STATIC"
 fi

 GLOBAL_CXXFLAGS=$GLOBAL_CFLAGS
 AS_COMPILER_FLAG([-fvisibility=hidden], [
   GLOBAL_CFLAGS+=" -fvisibility=hidden"
 ], [])

 AC_SUBST(GLOBAL_CFLAGS)
 AC_SUBST(GLOBAL_CXXFLAGS)
 AC_SUBST(GLOBAL_LDFLAGS)

 case "$GLOBAL_CFLAGS" in
     *-fvisibility=hidden*)
         AC_DEFINE([HAVE_FVISIBILITY], [1], [Define if compiled with -fvisibility=hidden])
 esac

 AC_ARG_WITH([sanitizers],
             [AS_HELP_STRING([--with-sanitizers],
             [build libplist with sanitizers (default is no)])],
             [build_sanitizers=${withval}],
             [])

 AC_ARG_WITH([fuzzers],
             [AS_HELP_STRING([--with-fuzzers],
             [build fuzzers (implies --with-sanitizers, default is no)])],
             [build_fuzzers=${withval}],
             [build_fuzzers=no])

 AC_ARG_WITH([tests],
             [AS_HELP_STRING([--without-tests],
             [Do not build libplist test suite (default is yes)])],
             [build_tests=${withval}],
             [build_tests=yes])

 if test "x$build_fuzzers" = "xyes"; then
     if test "x$build_sanitizers" = "xno"; then
         AC_MSG_ERROR([--with-fuzzers implies --with-sanitizers, but --without-sanitizers was given. This does not work.])
     fi
     build_sanitizers=yes
 fi

 if test "x$build_sanitizers" = "xyes"; then
     AS_COMPILER_FLAG([-fsanitize=address], [
         SANITIZER_FLAGS+=" -fsanitize=address"
         ASAN_AVAILABLE=yes
     ], [])
     if test "$ASAN_AVAILABLE" = "yes"; then
         AS_COMPILER_FLAG([-fsanitize=address -fsanitize-address-use-after-scope], [
             SANITIZER_FLAGS+=" -fsanitize-address-use-after-scope"
         ], [])
         SANITIZERS+="ASAN "
     fi

     AS_COMPILER_FLAG([-fsanitize=undefined], [
         SANITIZER_FLAGS+=" -fsanitize=undefined"
         UBSAN_AVAILABLE=yes
     ], [])

     if test "$UBSAN_AVAILABLE" = "yes"; then
         SANITIZERS+="UBSAN "
     fi

     if test -z "$SANITIZER_FLAGS"; then
         AC_MSG_ERROR([compiler doesn't support -fsanitize=address nor -fsanitize=undefined])
     fi

     COVERAGE_CHECKS="trace-pc-guard trace-cmp edge"
     for COV_CHECK in $COVERAGE_CHECKS; do
         AS_COMPILER_FLAG([-fsanitize-coverage=$COV_CHECK], [
             if test -z "$SAN_COV_FLAGS"; then
                 SAN_COV_FLAGS="$COV_CHECK"
             else
                 SAN_COV_FLAGS+=",$COV_CHECK"
             fi
         ], [])
     done
     if test -n "$SAN_COV_FLAGS"; then
         SANITIZER_FLAGS+=" -fsanitize-coverage=$SAN_COV_FLAGS"
         SANITIZERS+="+coverage "
     else
         AC_MSG_WARN([No sanitizer coverage supported by compiler])
     fi

     CFLAGS="-O1"

     AS_COMPILER_FLAG([-fno-omit-frame-pointer], [
         CFLAGS+=" -fno-omit-frame-pointer"
     ], [])

     AS_COMPILER_FLAG([-gline-tables-only], [
         CFLAGS+=" -gline-tables-only"
     ],
     [
         CFLAGS+=" -g"
     ])

     EXTRA_CONF+="  Enabled sanitizers ......: $SANITIZERS
 "

     CFLAGS+=" $SANITIZER_FLAGS"
     CXXFLAGS="$CFLAGS -std=c++11"
 fi

 if test "x$build_fuzzers" = "xyes"; then
     IS_CLANG=`$CXX --version 2>/dev/null |grep clang`
     case "$IS_CLANG" in
         *clang*)
         ;;
         *)
         AC_MSG_WARN([building fuzzers requires clang/clang++ (continuing anyway)])
         ;;
     esac

     CFLAGS+=" -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION"

     EXTRA_CONF+="  Build fuzzers ...........: yes
 "
 fi

 AM_CONDITIONAL([BUILD_FUZZERS],[test "x$build_fuzzers" = "xyes"])
 AM_CONDITIONAL([BUILD_TESTS],[test "x$build_tests" != "xno"])

 if test "x$build_fuzzers" = "xyes" || test "x$build_sanitizers" = "xyes"; then
     AS_COMPILER_FLAGS(TEST_CFLAGS, [$CFLAGS])
 fi

 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])

 AC_CONFIG_FILES([
 Makefile
 libcnary/Makefile
 src/Makefile
 src/libplist-2.0.pc
 src/libplist++-2.0.pc
 include/Makefile
 tools/Makefile
 docs/Makefile
 cython/Makefile
 test/Makefile
 fuzz/Makefile
 doxygen.cfg
 ])
 AC_OUTPUT

 echo "
 Configuration for $PACKAGE $VERSION:
 -------------------------------------------

   Install prefix ..........: $prefix
   Debug code ..............: $debug
   Python bindings .........: $cython_python_bindings
 $EXTRA_CONF
   Now type 'make' to build $PACKAGE $VERSION,
   and then 'make install' for installation.
 "
	# -- Autoconf --
	# Process this file with autoconf to produce a configure script.

	AC_PREREQ(2.68)
	AC_INIT([libplist], [m4_esyscmd(./git-version-gen $RELEASE_VERSION)], [https://github.com/libimobiledevice/libplist/issues], [], [https://libimobiledevice.org])
	AM_INIT_AUTOMAKE([dist-bzip2 no-dist-gzip check-news])
	m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES])
	AC_CONFIG_SRCDIR([src/])
	AC_CONFIG_HEADERS([config.h])
	AC_CONFIG_MACRO_DIR([m4])

	dnl libtool versioning
	# +1 : 0 : +1 == adds new functions to the interface
	# +1 : 0 : 0 == changes or removes functions (changes include both
	# changes to the signature and the semantic)
	# ? :+1 : ? == just internal changes
	# CURRENT : REVISION : AGE
	LIBPLIST_SO_VERSION=7:0:3

	AC_SUBST(LIBPLIST_SO_VERSION)

	# Check if we have a version defined
	if test -z $PACKAGE_VERSION; then
	AC_MSG_ERROR([PACKAGE_VERSION is not defined. Make sure to configure a source tree checked out from git or that .tarball-version is present.])
	fi

	# Checks for programs.
	AC_PROG_CC
	AC_PROG_CXX

	# AC_PROG_CXX will return "g++" even if no c++ compiler is installed
	AC_LANG_PUSH([C++])
	AC_MSG_CHECKING([whether $CXX is available and compiles a program])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
	[AC_MSG_RESULT([yes])],
	[AC_MSG_RESULT([no])
	AC_MSG_ERROR([C++ compiler not available or unable to compile])])
	AC_LANG_POP

	AM_PROG_CC_C_O
	LT_INIT

	# Checks for header files.
	AC_CHECK_HEADERS([stdint.h stdlib.h string.h])

	# Checks for typedefs, structures, and compiler characteristics.
	AC_C_CONST
	AC_TYPE_SIZE_T
	AC_TYPE_SSIZE_T
	AC_TYPE_UINT16_T
	AC_TYPE_UINT32_T
	AC_TYPE_UINT8_T

	# Checks for library functions.
	AC_CHECK_FUNCS([strdup strndup strerror gmtime_r localtime_r timegm strptime memmem])

	# Checking endianness
	AC_C_BIGENDIAN([AC_DEFINE([__BIG_ENDIAN__], [1], [big endian])],
	[AC_DEFINE([__LITTLE_ENDIAN__], [1], [little endian])])


	# Check for operating system
	AC_MSG_CHECKING([for platform-specific build settings])
	case ${host_os} in
	mingw32\|cygwin)
	AC_MSG_RESULT([${host_os}])
	win32=true
	;;
	darwin\|android*)
	AC_MSG_RESULT([${host_os}])
	;;
	*)
	AC_MSG_RESULT([${host_os}])
	AX_PTHREAD([], [AC_MSG_ERROR([pthread is required to build libplist])])
	AC_CHECK_LIB(pthread, [pthread_once], [], [AC_MSG_ERROR([pthread with pthread_once required to build libplist])])
	;;
	esac
	AM_CONDITIONAL(WIN32, test x$win32 = xtrue)

	AC_SEARCH_LIBS([fmin],[m])

	# Check if the C compiler supports __attribute__((constructor))
	AC_CACHE_CHECK([wether the C compiler supports constructor/destructor attributes],
	ac_cv_attribute_constructor, [
	ac_cv_attribute_constructor=no
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
	[[
	#ifndef __has_attribute
	#define __has_attribute(x) 0
	#endif
	#if !__has_attribute(constructor)
	#error No constructor attribute
	#endif
	#if !__has_attribute(destructor)
	#error No destructor attribute
	#endif
	static void __attribute__((constructor)) test_constructor(void) {
	}
	static void __attribute__((destructor)) test_destructor(void) {
	}
	]], [])],
	[ac_cv_attribute_constructor=yes]
	)]
	)
	if test "$ac_cv_attribute_constructor" = "yes"; then
	AC_DEFINE(HAVE_ATTRIBUTE_CONSTRUCTOR, 1, [Define if the C compiler supports constructor/destructor attributes])
	fi

	# Check if struct tm has a tm_gmtoff member
	AC_CACHE_CHECK(for tm_gmtoff in struct tm, ac_cv_struct_tm_gmtoff,
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
	#include <time.h>
	], [
	struct tm tm;
	tm.tm_gmtoff = 1;
	])],
	[ac_cv_struct_tm_gmtoff=yes],
	[ac_cv_struct_tm_gmtoff=no]
	)
	)

	if (test "$ac_cv_struct_tm_gmtoff" = "yes"); then
	AC_DEFINE(HAVE_TM_TM_GMTOFF, 1, [Define if struct tm has a tm_gmtoff member])
	fi

	# Check if struct tm has a tm_zone member
	AC_CACHE_CHECK(for tm_zone in struct tm, ac_cv_struct_tm_zone,
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
	#include <time.h>
	], [
	struct tm tm;
	tm.tm_zone = (char*)"UTC";
	])],
	[ac_cv_struct_tm_zone=yes],
	[ac_cv_struct_tm_zone=no]
	)
	)

	if (test "$ac_cv_struct_tm_zone" = "yes"); then
	AC_DEFINE(HAVE_TM_TM_ZONE, 1, [Define if struct tm has a tm_zone member])
	fi

	# Cython Python Bindings
	AC_ARG_WITH([cython],
	[AS_HELP_STRING([--without-cython],
	[build Python bindings using Cython (default is yes)])],
	[build_cython=false],
	[build_cython=true])
	if test "$build_cython" = "true"; then
	AC_PROG_CYTHON([0.17.0])
	if [test "x$CYTHON" != "xfalse"]; then
	AM_PATH_PYTHON([2.3], [CYTHON_PYTHON])
	fi
	else
	CYTHON=false
	fi
	if [test "x$CYTHON" != "xfalse"]; then
	PKG_PROG_PKG_CONFIG
	AC_MSG_CHECKING([for libplist Cython bindings])
	if test -x "$PKG_CONFIG"; then
	CYTHON_PLIST_INCLUDE_DIR=$($PKG_CONFIG --variable=includedir libplist-2.0)/plist/cython
	fi
	if [test ! -d "$CYTHON_PLIST_INCLUDE_DIR"]; then
	CYTHON_PLIST_INCLUDE_DIR=.
	cython_python_bindings=yes
	AC_MSG_RESULT([Using built-in libplist Cython bindings (assuming this is a first build)])
	else
	AC_SUBST([CYTHON_PLIST_INCLUDE_DIR])
	AC_MSG_RESULT([$CYTHON_PLIST_INCLUDE_DIR])
	cython_python_bindings=yes
	fi
	else
	cython_python_bindings=no
	fi
	AM_CONDITIONAL([HAVE_CYTHON],[test "x$cython_python_bindings" = "xyes"])

	AS_COMPILER_FLAGS(GLOBAL_CFLAGS, "-Wall -Wextra -Wredundant-decls -Wshadow -Wpointer-arith -Wwrite-strings -Wswitch-default -Wno-unused-parameter -Wno-strict-aliasing $PTHREAD_CFLAGS")
	GLOBAL_LDFLAGS="$PTHREAD_LIBS"

	AC_ARG_ENABLE(debug,
	AS_HELP_STRING([--enable-debug],
	[build debug message output code (default is no)]),
	[case "${enableval}" in
	yes) debug=yes ;;
	no) debug=no ;;
	*) AC_MSG_ERROR([bad value ${enableval} for --enable-debug]) ;;
	esac],
	[debug=no])

	if (test "x$debug" = "xyes"); then
	AC_DEFINE(DEBUG, 1, [Define if debug message output code should be built.])
	GLOBAL_CFLAGS+=" -g"
	fi

	if test "x$enable_static" = "xyes" -a "x$enable_shared" = "xno"; then
	GLOBAL_CFLAGS+=" -DLIBPLIST_STATIC"
	fi

	GLOBAL_CXXFLAGS=$GLOBAL_CFLAGS
	AS_COMPILER_FLAG([-fvisibility=hidden], [
	GLOBAL_CFLAGS+=" -fvisibility=hidden"
	], [])

	AC_SUBST(GLOBAL_CFLAGS)
	AC_SUBST(GLOBAL_CXXFLAGS)
	AC_SUBST(GLOBAL_LDFLAGS)

	case "$GLOBAL_CFLAGS" in
	-fvisibility=hidden)
	AC_DEFINE([HAVE_FVISIBILITY], [1], [Define if compiled with -fvisibility=hidden])
	esac

	AC_ARG_WITH([sanitizers],
	[AS_HELP_STRING([--with-sanitizers],
	[build libplist with sanitizers (default is no)])],
	[build_sanitizers=${withval}],
	[])

	AC_ARG_WITH([fuzzers],
	[AS_HELP_STRING([--with-fuzzers],
	[build fuzzers (implies --with-sanitizers, default is no)])],
	[build_fuzzers=${withval}],
	[build_fuzzers=no])

	AC_ARG_WITH([tests],
	[AS_HELP_STRING([--without-tests],
	[Do not build libplist test suite (default is yes)])],
	[build_tests=${withval}],
	[build_tests=yes])

	if test "x$build_fuzzers" = "xyes"; then
	if test "x$build_sanitizers" = "xno"; then
	AC_MSG_ERROR([--with-fuzzers implies --with-sanitizers, but --without-sanitizers was given. This does not work.])
	fi
	build_sanitizers=yes
	fi

	if test "x$build_sanitizers" = "xyes"; then
	AS_COMPILER_FLAG([-fsanitize=address], [
	SANITIZER_FLAGS+=" -fsanitize=address"
	ASAN_AVAILABLE=yes
	], [])
	if test "$ASAN_AVAILABLE" = "yes"; then
	AS_COMPILER_FLAG([-fsanitize=address -fsanitize-address-use-after-scope], [
	SANITIZER_FLAGS+=" -fsanitize-address-use-after-scope"
	], [])
	SANITIZERS+="ASAN "
	fi

	AS_COMPILER_FLAG([-fsanitize=undefined], [
	SANITIZER_FLAGS+=" -fsanitize=undefined"
	UBSAN_AVAILABLE=yes
	], [])

	if test "$UBSAN_AVAILABLE" = "yes"; then
	SANITIZERS+="UBSAN "
	fi

	if test -z "$SANITIZER_FLAGS"; then
	AC_MSG_ERROR([compiler doesn't support -fsanitize=address nor -fsanitize=undefined])
	fi

	COVERAGE_CHECKS="trace-pc-guard trace-cmp edge"
	for COV_CHECK in $COVERAGE_CHECKS; do
	AS_COMPILER_FLAG([-fsanitize-coverage=$COV_CHECK], [
	if test -z "$SAN_COV_FLAGS"; then
	SAN_COV_FLAGS="$COV_CHECK"
	else
	SAN_COV_FLAGS+=",$COV_CHECK"
	fi
	], [])
	done
	if test -n "$SAN_COV_FLAGS"; then
	SANITIZER_FLAGS+=" -fsanitize-coverage=$SAN_COV_FLAGS"
	SANITIZERS+="+coverage "
	else
	AC_MSG_WARN([No sanitizer coverage supported by compiler])
	fi

	CFLAGS="-O1"

	AS_COMPILER_FLAG([-fno-omit-frame-pointer], [
	CFLAGS+=" -fno-omit-frame-pointer"
	], [])

	AS_COMPILER_FLAG([-gline-tables-only], [
	CFLAGS+=" -gline-tables-only"
	],
	[
	CFLAGS+=" -g"
	])

	EXTRA_CONF+=" Enabled sanitizers ......: $SANITIZERS
	"

	CFLAGS+=" $SANITIZER_FLAGS"
	CXXFLAGS="$CFLAGS -std=c++11"
	fi

	if test "x$build_fuzzers" = "xyes"; then
	IS_CLANG=`$CXX --version 2>/dev/null \|grep clang`
	case "$IS_CLANG" in
	clang)
	;;
	*)
	AC_MSG_WARN([building fuzzers requires clang/clang++ (continuing anyway)])
	;;
	esac

	CFLAGS+=" -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION"

	EXTRA_CONF+=" Build fuzzers ...........: yes
	"
	fi

	AM_CONDITIONAL([BUILD_FUZZERS],[test "x$build_fuzzers" = "xyes"])
	AM_CONDITIONAL([BUILD_TESTS],[test "x$build_tests" != "xno"])

	if test "x$build_fuzzers" = "xyes" \|\| test "x$build_sanitizers" = "xyes"; then
	AS_COMPILER_FLAGS(TEST_CFLAGS, [$CFLAGS])
	fi

	m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])

	AC_CONFIG_FILES([
	Makefile
	libcnary/Makefile
	src/Makefile
	src/libplist-2.0.pc
	src/libplist++-2.0.pc
	include/Makefile
	tools/Makefile
	docs/Makefile
	cython/Makefile
	test/Makefile
	fuzz/Makefile
	doxygen.cfg
	])
	AC_OUTPUT

	echo "
	Configuration for $PACKAGE $VERSION:
	-------------------------------------------

	Install prefix ..........: $prefix
	Debug code ..............: $debug
	Python bindings .........: $cython_python_bindings
	$EXTRA_CONF
	Now type 'make' to build $PACKAGE $VERSION,
	and then 'make install' for installation.
	"