sqlcipher/configure.ac at master · couchbaselabs/sqlcipher

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# The build process allows for using a cross-compiler.  But the default
# action is to target the same platform that we are running on.  The
# configure script needs to discover the following properties of the 
# build and target systems:
#    srcdir
#        The is the name of the directory that contains the
#        "configure" shell script.  All source files are
#        located relative to this directory.
#    bindir
#        The name of the directory where executables should be
#        written by the "install" target of the makefile.
#    program_prefix
#        Add this prefix to the names of all executables that run
#        on the target machine.  Default: ""
#    ENABLE_SHARED
#        True if shared libraries should be generated.
#    BUILD_CC
#        The name of a command that is used to convert C
#        source files into executables that run on the build
#        platform.
#    BUILD_CFLAGS
#        Switches that the build compiler needs in order to construct
#        command-line programs.
#    BUILD_LIBS
#        Libraries that the build compiler needs in order to construct
#        command-line programs.
#    BUILD_EXEEXT
#        The filename extension for executables on the build
#        platform.  "" for Unix and ".exe" for Windows.
#        Lots of values are read in from the tclConfig.sh script,
#        if that script is available.  This values are used for
#        constructing and installing the TCL extension.
#    TARGET_READLINE_LIBS
#        This is the library directives passed to the target linker
#        that cause the executable to link against the readline library.
#        This might be a switch like "-lreadline" or pathnames of library
#        file like "../../src/libreadline.a".
#    TARGET_READLINE_INC
#        This variables define the directory that contain header
#        files for the readline library.  If the compiler is able 
#        to find <readline.h> on its own, then this can be blank.
#    TARGET_EXEEXT
#        The filename extension for executables on the
#        target platform.  "" for Unix and ".exe" for windows.
# The generated configure script will make an attempt to guess
# at all of the above parameters.  You can override any of
# the guesses by setting the environment variable named
# "config_AAAA" where "AAAA" is the name of the parameter
# described above.  (Exception: srcdir cannot be set this way.)
# If you have a file that sets one or more of these environment
# variables, you can invoke configure as follows:
#           configure --with-hints=FILE
# where FILE is the name of the file that sets the environment
# variables.  FILE should be an absolute pathname.
# This configure.in file is easy to reuse on other projects.  Just
# change the argument to AC_INIT().  And disable any features that
# you don't need (for example BLT) by erasing or commenting out
# the corresponding code.
AC_INIT(sqlcipher, m4_esyscmd([cat VERSION | tr -d '\n']))
dnl Make sure the local VERSION file matches this configure script
sqlite_version_sanity_check=`cat $srcdir/VERSION | tr -d '\n'`
if test "$PACKAGE_VERSION" != "$sqlite_version_sanity_check" ; then
AC_MSG_ERROR([configure script is out of date:
 configure \$PACKAGE_VERSION = $PACKAGE_VERSION
 top level VERSION file     = $sqlite_version_sanity_check
please regen with autoconf])
dnl Put the RCS revision string after AC_INIT so that it will also
dnl show in in configure.
# The following RCS revision string applies to configure.in
# $Revision: 1.56 $
# Programs needed
AC_PROG_LIBTOOL
AC_PROG_INSTALL
AC_PROG_AWK
# Enable large file support (if special flags are necessary)
AC_SYS_LARGEFILE
# Check for needed/wanted data types
AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, intptr_t, uint8_t,
                uint16_t, uint32_t, uint64_t, uintptr_t])
# Check for needed/wanted headers
AC_CHECK_HEADERS([sys/types.h stdlib.h stdint.h inttypes.h malloc.h])
# Figure out whether or not we have these functions
AC_CHECK_FUNCS([usleep fdatasync localtime_r gmtime_r localtime_s utime malloc_usable_size])
# By default, we use the amalgamation (this may be changed below...)
USE_AMALGAMATION=1
# See whether we can run specific tclsh versions known to work well;
# if not, then we fall back to plain tclsh.
# TODO: try other versions before falling back?
AC_CHECK_PROGS(TCLSH_CMD, [tclsh8.6 tclsh8.5 tclsh], none)
if test "$TCLSH_CMD" = "none"; then
  # If we can't find a local tclsh, then building the amalgamation will fail.
  # We act as though --disable-amalgamation has been used.
  echo "Warning: can't find tclsh - defaulting to non-amalgamation build."
  USE_AMALGAMATION=0
  TCLSH_CMD="tclsh"
AC_SUBST(TCLSH_CMD)
AC_ARG_VAR([TCLLIBDIR], [Where to install tcl plugin])
if test "x${TCLLIBDIR+set}" != "xset" ; then
  TCLLIBDIR='$(libdir)'
  for i in `echo 'puts stdout $auto_path' | ${TCLSH_CMD}` ; do
    TCLLIBDIR=$i
  TCLLIBDIR="${TCLLIBDIR}/sqlite3"
# Set up an appropriate program prefix
if test "$program_prefix" = "NONE"; then
  program_prefix=""
AC_SUBST(program_prefix)
VERSION=[`cat $srcdir/VERSION | sed 's/^\([0-9]*\.*[0-9]*\).*/\1/'`]
AC_MSG_NOTICE(Version set to $VERSION)
AC_SUBST(VERSION)
RELEASE=`cat $srcdir/VERSION`
AC_MSG_NOTICE(Release set to $RELEASE)
AC_SUBST(RELEASE)
VERSION_NUMBER=[`cat $srcdir/VERSION \
                           | sed 's/[^0-9]/ /g' \
                | awk '{printf "%d%03d%03d",$1,$2,$3}'`]
AC_MSG_NOTICE(Version number set to $VERSION_NUMBER)
AC_SUBST(VERSION_NUMBER)
# Check to see if the --with-hints=FILE option is used.  If there is none,
# then check for a files named "$host.hints" and ../$hosts.hints where
# $host is the hostname of the build system.  If still no hints are
# found, try looking in $system.hints and ../$system.hints where
# $system is the result of uname -s.
AC_ARG_WITH(hints,
  AC_HELP_STRING([--with-hints=FILE],[Read configuration options from FILE]),
  hints=$withval)
if test "$hints" = ""; then
  host=`hostname | sed 's/\..*//'`
  if test -r $host.hints; then
    hints=$host.hints
     if test -r ../$host.hints; then
       hints=../$host.hints
if test "$hints" = ""; then
  sys=`uname -s`
  if test -r $sys.hints; then
    hints=$sys.hints
     if test -r ../$sys.hints; then
       hints=../$sys.hints
if test "$hints" != ""; then
  AC_MSG_RESULT(reading hints from $hints)
# Locate a compiler for the build machine.  This compiler should
# generate command-line programs that run on the build machine.
if test x"$cross_compiling" = xno; then
	BUILD_CC=$CC
	BUILD_CFLAGS=$CFLAGS
	if test "${BUILD_CC+set}" != set; then
		AC_CHECK_PROGS(BUILD_CC, gcc cc cl)
	if test "${BUILD_CFLAGS+set}" != set; then
		BUILD_CFLAGS="-g"
AC_SUBST(BUILD_CC)
# Do we want to support multithreaded use of sqlite
AC_ARG_ENABLE(threadsafe, 
AC_HELP_STRING([--enable-threadsafe],[Support threadsafe operation]),,enable_threadsafe=yes)
AC_MSG_CHECKING([whether to support threadsafe operation])
if test "$enable_threadsafe" = "no"; then
  SQLITE_THREADSAFE=0
  AC_MSG_RESULT([no])
  SQLITE_THREADSAFE=1
  AC_MSG_RESULT([yes])
AC_SUBST(SQLITE_THREADSAFE)
if test "$SQLITE_THREADSAFE" = "1"; then
  AC_SEARCH_LIBS(pthread_create, pthread)
# Which crypto library do we use
AC_ARG_WITH([crypto-lib],
AC_HELP_STRING([--with-crypto-lib],[Specify which crypto library to use]),
crypto_lib=$withval)
AC_MSG_CHECKING([for crypto library to use])
if test "$crypto_lib" = "none"; then
  AC_MSG_RESULT([none])
  if test "$crypto_lib" = "commoncrypto"; then
    CFLAGS+=" -DSQLCIPHER_CRYPTO_CC"
    BUILD_CFLAGS+=" -DSQLCIPHER_CRYPTO_CC"
	  AC_MSG_RESULT([commoncrypto])
    if test "$crypto_lib" = "libtomcrypt"; then
      CFLAGS+=" -DSQLCIPHER_CRYPTO_LIBTOMCRYPT"
      BUILD_CFLAGS+=" -DSQLCIPHER_CRYPTO_LIBTOMCRYPT"
      AC_MSG_RESULT([libtomcrypt])
      AC_CHECK_LIB([tomcrypt], [register_cipher], ,
                   AC_MSG_ERROR([Library crypto not found. Install libtomcrypt!"]))
        CFLAGS+=" -DSQLCIPHER_CRYPTO_OPENSSL"
        BUILD_CFLAGS+=" -DSQLCIPHER_CRYPTO_OPENSSL"
	      AC_MSG_RESULT([openssl])
        AC_CHECK_LIB([crypto], [HMAC_Init_ex], ,
                     AC_MSG_ERROR([Library crypto not found. Install openssl!"]))
# Do we want to allow a connection created in one thread to be used
# in another thread.  This does not work on many Linux systems (ex: RedHat 9)
# due to bugs in the threading implementations.  This is thus off by default.
AC_ARG_ENABLE(cross-thread-connections, 
AC_HELP_STRING([--enable-cross-thread-connections],[Allow connection sharing across threads]),,enable_xthreadconnect=no)
AC_MSG_CHECKING([whether to allow connections to be shared across threads])
if test "$enable_xthreadconnect" = "no"; then
  XTHREADCONNECT=''
  AC_MSG_RESULT([no])
  XTHREADCONNECT='-DSQLITE_ALLOW_XTHREAD_CONNECT=1'
  AC_MSG_RESULT([yes])
AC_SUBST(XTHREADCONNECT)
# Do we want to support release
AC_ARG_ENABLE(releasemode, 
AC_HELP_STRING([--enable-releasemode],[Support libtool link to release mode]),,enable_releasemode=no)
AC_MSG_CHECKING([whether to support shared library linked as release mode or not])
if test "$enable_releasemode" = "no"; then
  ALLOWRELEASE=""
  AC_MSG_RESULT([no])
  ALLOWRELEASE="-release `cat $srcdir/VERSION`"
  AC_MSG_RESULT([yes])
AC_SUBST(ALLOWRELEASE)
# Do we want temporary databases in memory
AC_ARG_ENABLE(tempstore, 
AC_HELP_STRING([--enable-tempstore],[Use an in-ram database for temporary tables (never,no,yes,always)]),,enable_tempstore=no)
AC_MSG_CHECKING([whether to use an in-ram database for temporary tables])
case "$enable_tempstore" in
    TEMP_STORE=0
    AC_MSG_RESULT([never])
    TEMP_STORE=1
    AC_MSG_RESULT([no])
     TEMP_STORE=2
    AC_MSG_RESULT([yes])
  always ) 
     TEMP_STORE=3
    AC_MSG_RESULT([always])
    TEMP_STORE=1
    AC_MSG_RESULT([no])
AC_SUBST(TEMP_STORE)
###########
# Lots of things are different if we are compiling for Windows using
# the CYGWIN environment.  So check for that special case and handle
# things accordingly.
AC_MSG_CHECKING([if executables have the .exe suffix])
if test "$config_BUILD_EXEEXT" = ".exe"; then
  CYGWIN=yes
  AC_MSG_RESULT(yes)
  AC_MSG_RESULT(unknown)
if test "$CYGWIN" != "yes"; then
  AC_CYGWIN
if test "$CYGWIN" = "yes"; then
  BUILD_EXEEXT=.exe
  BUILD_EXEEXT=$EXEEXT
if test x"$cross_compiling" = xno; then
  TARGET_EXEEXT=$BUILD_EXEEXT
  TARGET_EXEEXT=$config_TARGET_EXEEXT
if test "$TARGET_EXEEXT" = ".exe"; then
  SQLITE_OS_UNIX=0
  SQLITE_OS_WIN=1
  CFLAGS="$CFLAGS -DSQLITE_OS_WIN=1"
  SQLITE_OS_UNIX=1
  SQLITE_OS_WIN=0
  CFLAGS="$CFLAGS -DSQLITE_OS_UNIX=1"
AC_SUBST(BUILD_EXEEXT)
AC_SUBST(SQLITE_OS_UNIX)
AC_SUBST(SQLITE_OS_WIN)
AC_SUBST(TARGET_EXEEXT)
# Figure out all the parameters needed to compile against Tcl.
# This code is derived from the SC_PATH_TCLCONFIG and SC_LOAD_TCLCONFIG
# macros in the in the tcl.m4 file of the standard TCL distribution.
# Those macros could not be used directly since we have to make some
# minor changes to accomodate systems that do not have TCL installed.
AC_ARG_ENABLE(tcl, AC_HELP_STRING([--disable-tcl],[do not build TCL extension]),
      [use_tcl=$enableval],[use_tcl=yes])
if test "${use_tcl}" = "yes" ; then
  AC_ARG_WITH(tcl, AC_HELP_STRING([--with-tcl=DIR],[directory containing tcl configuration (tclConfig.sh)]), with_tclconfig=${withval})
  AC_MSG_CHECKING([for Tcl configuration])
  AC_CACHE_VAL(ac_cv_c_tclconfig,[
    # First check to see if --with-tcl was specified.
    if test x"${with_tclconfig}" != x ; then
      if test -f "${with_tclconfig}/tclConfig.sh" ; then
        ac_cv_c_tclconfig=`(cd ${with_tclconfig}; pwd)`
        AC_MSG_ERROR([${with_tclconfig} directory doesn't contain tclConfig.sh])
    # Start autosearch by asking tclsh
    if test x"${ac_cv_c_tclconfig}" = x ; then
      if test x"$cross_compiling" = xno; then
        for i in `echo 'puts stdout $auto_path' | ${TCLSH_CMD}`
          if test -f "$i/tclConfig.sh" ; then
            ac_cv_c_tclconfig="$i"
            break
        done
    # then check for a private Tcl installation
    if test x"${ac_cv_c_tclconfig}" = x ; then
      for i in \
            ../tcl \
            `ls -dr ../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
            `ls -dr ../tcl[[8-9]].[[0-9]] 2>/dev/null` \
            `ls -dr ../tcl[[8-9]].[[0-9]]* 2>/dev/null` \
            ../../tcl \
            `ls -dr ../../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
            `ls -dr ../../tcl[[8-9]].[[0-9]] 2>/dev/null` \
            `ls -dr ../../tcl[[8-9]].[[0-9]]* 2>/dev/null` \
            ../../../tcl \
            `ls -dr ../../../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
            `ls -dr ../../../tcl[[8-9]].[[0-9]] 2>/dev/null` \
            `ls -dr ../../../tcl[[8-9]].[[0-9]]* 2>/dev/null`
        if test -f "$i/unix/tclConfig.sh" ; then
          ac_cv_c_tclconfig=`(cd $i/unix; pwd)`
          break
    # check in a few common install locations
    if test x"${ac_cv_c_tclconfig}" = x ; then
      for i in \
            `ls -d ${libdir} 2>/dev/null` \
            `ls -d /usr/local/lib 2>/dev/null` \
            `ls -d /usr/contrib/lib 2>/dev/null` \
            `ls -d /usr/lib 2>/dev/null`
        if test -f "$i/tclConfig.sh" ; then
           ac_cv_c_tclconfig=`(cd $i; pwd)`
           break
    # check in a few other private locations
    if test x"${ac_cv_c_tclconfig}" = x ; then
      for i in \
         ${srcdir}/../tcl \
         `ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \
         `ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]] 2>/dev/null` \
         `ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]]* 2>/dev/null`
        if test -f "$i/unix/tclConfig.sh" ; then
          ac_cv_c_tclconfig=`(cd $i/unix; pwd)`
          break
  if test x"${ac_cv_c_tclconfig}" = x ; then
    use_tcl=no
    AC_MSG_WARN(Can't find Tcl configuration definitions)
    AC_MSG_WARN(*** Without Tcl the regression tests cannot be executed ***)
    AC_MSG_WARN(*** Consider using --with-tcl=... to define location of Tcl ***)
    TCL_BIN_DIR=${ac_cv_c_tclconfig}
    AC_MSG_RESULT(found $TCL_BIN_DIR/tclConfig.sh)
    AC_MSG_CHECKING([for existence of $TCL_BIN_DIR/tclConfig.sh])
    if test -f "$TCL_BIN_DIR/tclConfig.sh" ; then
      AC_MSG_RESULT([loading])
      . $TCL_BIN_DIR/tclConfig.sh
      AC_MSG_RESULT([file not found])
    # If the TCL_BIN_DIR is the build directory (not the install directory),
    # then set the common variable name to the value of the build variables.
    # For example, the variable TCL_LIB_SPEC will be set to the value
    # of TCL_BUILD_LIB_SPEC. An extension should make use of TCL_LIB_SPEC
    # instead of TCL_BUILD_LIB_SPEC since it will work with both an
    # installed and uninstalled version of Tcl.
    if test -f $TCL_BIN_DIR/Makefile ; then
      TCL_LIB_SPEC=${TCL_BUILD_LIB_SPEC}
      TCL_STUB_LIB_SPEC=${TCL_BUILD_STUB_LIB_SPEC}
      TCL_STUB_LIB_PATH=${TCL_BUILD_STUB_LIB_PATH}
    # eval is required to do the TCL_DBGX substitution
    eval "TCL_LIB_FILE=\"${TCL_LIB_FILE}\""
    eval "TCL_LIB_FLAG=\"${TCL_LIB_FLAG}\""
    eval "TCL_LIB_SPEC=\"${TCL_LIB_SPEC}\""
    eval "TCL_STUB_LIB_FILE=\"${TCL_STUB_LIB_FILE}\""
    eval "TCL_STUB_LIB_FLAG=\"${TCL_STUB_LIB_FLAG}\""
    eval "TCL_STUB_LIB_SPEC=\"${TCL_STUB_LIB_SPEC}\""
    AC_SUBST(TCL_VERSION)
    AC_SUBST(TCL_BIN_DIR)
    AC_SUBST(TCL_SRC_DIR)
    AC_SUBST(TCL_INCLUDE_SPEC)
    AC_SUBST(TCL_LIB_FILE)
    AC_SUBST(TCL_LIB_FLAG)
    AC_SUBST(TCL_LIB_SPEC)
    AC_SUBST(TCL_STUB_LIB_FILE)
    AC_SUBST(TCL_STUB_LIB_FLAG)
    AC_SUBST(TCL_STUB_LIB_SPEC)
if test "${use_tcl}" = "no" ; then
  HAVE_TCL=""
  HAVE_TCL=1
AC_SUBST(HAVE_TCL)
# Figure out what C libraries are required to compile programs
# that use "readline()" library.
TARGET_READLINE_LIBS=""
TARGET_READLINE_INC=""
TARGET_HAVE_READLINE=0
AC_ARG_ENABLE([readline],
	[AC_HELP_STRING([--disable-readline],[disable readline support [default=detect]])],
	[with_readline=$enableval],
	[with_readline=auto])
if test x"$with_readline" != xno; then
	found="yes"
	AC_ARG_WITH([readline-lib],
		[AC_HELP_STRING([--with-readline-lib],[specify readline library])],
		[with_readline_lib=$withval],
		[with_readline_lib="auto"])
	if test "x$with_readline_lib" = xauto; then
		save_LIBS="$LIBS"
		AC_SEARCH_LIBS(tgetent, [readline ncurses curses termcap], [term_LIBS="$LIBS"], [term_LIBS=""])
		AC_CHECK_LIB([readline], [readline], [TARGET_READLINE_LIBS="-lreadline"], [found="no"])
		TARGET_READLINE_LIBS="$TARGET_READLINE_LIBS $term_LIBS"
		LIBS="$save_LIBS"
		TARGET_READLINE_LIBS="$with_readline_lib"
	AC_ARG_WITH([readline-inc],
		[AC_HELP_STRING([--with-readline-inc],[specify readline include paths])],
		[with_readline_inc=$withval],
		[with_readline_inc="auto"])
	if test "x$with_readline_inc" = xauto; then
		AC_CHECK_HEADER(readline.h, [found="yes"], [
			found="no"
			if test "$cross_compiling" != yes; then
				for dir in /usr /usr/local /usr/local/readline /usr/contrib /mingw; do
					for subdir in include include/readline; do
						AC_CHECK_FILE($dir/$subdir/readline.h, found=yes)
						if test "$found" = "yes"; then
							TARGET_READLINE_INC="-I$dir/$subdir"
							break
					test "$found" = "yes" && break
		TARGET_READLINE_INC="$with_readline_inc"
	if test x"$found" = xno; then
		TARGET_READLINE_LIBS=""
		TARGET_READLINE_INC=""
		TARGET_HAVE_READLINE=0
		TARGET_HAVE_READLINE=1
AC_SUBST(TARGET_READLINE_LIBS)
AC_SUBST(TARGET_READLINE_INC)
AC_SUBST(TARGET_HAVE_READLINE)
# Figure out what C libraries are required to compile programs
# that use "fdatasync()" function.
AC_SEARCH_LIBS(fdatasync, [rt])
# check for debug enabled
AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug],[enable debugging & verbose explain]),
      [use_debug=$enableval],[use_debug=no])
if test "${use_debug}" = "yes" ; then
  TARGET_DEBUG="-DSQLITE_DEBUG=1"
  TARGET_DEBUG="-DNDEBUG"
AC_SUBST(TARGET_DEBUG)
# See whether we should use the amalgamation to build
AC_ARG_ENABLE(amalgamation, AC_HELP_STRING([--disable-amalgamation],
      [Disable the amalgamation and instead build all files separately]),
      [use_amalgamation=$enableval],[use_amalgamation=yes])
if test "${use_amalgamation}" != "yes" ; then
  USE_AMALGAMATION=0
AC_SUBST(USE_AMALGAMATION)
# See whether we should allow loadable extensions
AC_ARG_ENABLE(load-extension, AC_HELP_STRING([--enable-load-extension],
      [Enable loading of external extensions]),
      [use_loadextension=$enableval],[use_loadextension=no])
if test "${use_loadextension}" = "yes" ; then
  OPT_FEATURE_FLAGS=""
  AC_SEARCH_LIBS(dlopen, dl)
  OPT_FEATURE_FLAGS="-DSQLITE_OMIT_LOAD_EXTENSION=1"
# attempt to duplicate any OMITS and ENABLES into the $(OPT_FEATURE_FLAGS) parameter
for option in $CFLAGS $CPPFLAGS
  case $option in
    -DSQLITE_OMIT*) OPT_FEATURE_FLAGS="$OPT_FEATURE_FLAGS $option";;
    -DSQLITE_ENABLE*) OPT_FEATURE_FLAGS="$OPT_FEATURE_FLAGS $option";;
AC_SUBST(OPT_FEATURE_FLAGS)
# attempt to remove any OMITS and ENABLES from the $(CFLAGS) parameter
ac_temp_CFLAGS=""
for option in $CFLAGS
  case $option in
    -DSQLITE_OMIT*) ;;
    -DSQLITE_ENABLE*) ;;
    *) ac_temp_CFLAGS="$ac_temp_CFLAGS $option";;
CFLAGS=$ac_temp_CFLAGS
# attempt to remove any OMITS and ENABLES from the $(CPPFLAGS) parameter
ac_temp_CPPFLAGS=""
for option in $CPPFLAGS
  case $option in
    -DSQLITE_OMIT*) ;;
    -DSQLITE_ENABLE*) ;;
    *) ac_temp_CPPFLAGS="$ac_temp_CPPFLAGS $option";;
CPPFLAGS=$ac_temp_CPPFLAGS
# attempt to remove any OMITS and ENABLES from the $(BUILD_CFLAGS) parameter
ac_temp_BUILD_CFLAGS=""
for option in $BUILD_CFLAGS
  case $option in
    -DSQLITE_OMIT*) ;;
    -DSQLITE_ENABLE*) ;;
    *) ac_temp_BUILD_CFLAGS="$ac_temp_BUILD_CFLAGS $option";;
BUILD_CFLAGS=$ac_temp_BUILD_CFLAGS
# See whether we should use GCOV
AC_ARG_ENABLE(gcov, AC_HELP_STRING([--enable-gcov],
      [Enable coverage testing using gcov]),
      [use_gcov=$enableval],[use_gcov=no])
if test "${use_gcov}" = "yes" ; then
  USE_GCOV=1
  USE_GCOV=0
AC_SUBST(USE_GCOV)
# Output the config header
AC_CONFIG_HEADERS(config.h)
# Generate the output files.
AC_SUBST(BUILD_CFLAGS)
AC_OUTPUT([
sqlcipher.pc
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