configure.ac

来自「Ubuntu packages of security software。 相」· AC 代码 · 共 409 行 · 第 1/2 页

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

dnl NOTE FOR MAINTAINERS: Do not use major or minor version numbers with
dnl leading zeros, because they may be treated as octal constants. The
dnl PCRE_PRERELEASE feature is for identifying release candidates. It might
dnl be defined as -RC2, for example. For real releases, it should be defined
dnl empty.

m4_define(pcre_major, [7])
m4_define(pcre_minor, [4])
m4_define(pcre_prerelease, [])
m4_define(pcre_date, [2007-09-21])

AC_PREREQ(2.57)
AC_INIT(PCRE, pcre_major.pcre_minor[]pcre_prerelease, , pcre)
AC_CONFIG_SRCDIR([pcre.h.in])
AM_INIT_AUTOMAKE([dist-bzip2 dist-zip])
AC_CONFIG_HEADERS(config.h)

# The default CFLAGS and CXXFLAGS in Autoconf are "-g -O2" for gcc and just
# "-g" for any other compiler. There doesn't seem to be a standard way of
# getting rid of the -g (which I don't think is needed for a production
# library). This fudge seems to achieve the necessary. First, we remember the
# externally set values of CFLAGS and CXXFLAGS. Then call the AC_PROG_CC and
# AC_PROG_CXX macros to find the compilers - if CFLAGS and CXXFLAGS are not
# set, they will be set to Autoconf's defaults. Afterwards, if the original
# values were not set, remove the -g from the Autoconf defaults.
# (PH 02-May-07)

remember_set_CFLAGS="$CFLAGS"

AC_PROG_CC
AC_PROG_RANLIB

if test "x$remember_set_CFLAGS" = "x"
then
  if test "$CFLAGS" = "-g -O2"
  then
    CFLAGS="-O2"
  elif test "$CFLAGS" = "-g"
  then
    CFLAGS=""
  fi
fi

AC_PROG_INSTALL
AC_PROG_LN_S

PCRE_MAJOR="pcre_major"
PCRE_MINOR="pcre_minor"
PCRE_PRERELEASE="pcre_prerelease"
PCRE_DATE="pcre_date"

AC_SUBST(PCRE_MAJOR)
AC_SUBST(PCRE_MINOR)
AC_SUBST(PCRE_PRERELEASE)
AC_SUBST(PCRE_DATE)

# Set a more sensible default value for $(htmldir).
if test "x$htmldir" = 'x${docdir}'
then
  htmldir='${docdir}/html'
fi

# Handle --enable-rebuild-chartables
AC_ARG_ENABLE(rebuild-chartables,
              AS_HELP_STRING([--enable-rebuild-chartables],
                             [rebuild character tables in current locale]),
              , enable_rebuild_chartables=no)

# Handle --enable-utf8 (disabled by default)
AC_ARG_ENABLE(utf8,
              AS_HELP_STRING([--enable-utf8],
                             [enable UTF-8 support]),
              , enable_utf8=unset)

# Handle --enable-unicode-properties
AC_ARG_ENABLE(unicode-properties,
              AS_HELP_STRING([--enable-unicode-properties],
                             [enable Unicode properties support (implies --enable-utf8)]),
              , enable_unicode_properties=no)

# Handle --enable-newline=NL
dnl AC_ARG_ENABLE(newline,
dnl               AS_HELP_STRING([--enable-newline=NL],
dnl                              [use NL as newline (lf, cr, crlf, anycrlf, any; default=lf)]),
dnl               , enable_newline=lf)

# Separate newline options
ac_pcre_newline=lf
AC_ARG_ENABLE(newline-is-cr,
              AS_HELP_STRING([--enable-newline-is-cr],
                             [use CR as newline character]),
              ac_pcre_newline=cr)
AC_ARG_ENABLE(newline-is-lf,
              AS_HELP_STRING([--enable-newline-is-lf],
                             [use LF as newline character (default)]),
              ac_pcre_newline=lf)
AC_ARG_ENABLE(newline-is-crlf,
              AS_HELP_STRING([--enable-newline-is-crlf],
                             [use CRLF as newline sequence]),
              ac_pcre_newline=crlf)
AC_ARG_ENABLE(newline-is-anycrlf,
              AS_HELP_STRING([--enable-newline-is-anycrlf],
                             [use CR, LF, or CRLF as newline sequence]),
              ac_pcre_newline=anycrlf)
AC_ARG_ENABLE(newline-is-any,
              AS_HELP_STRING([--enable-newline-is-any],
                             [use any valid Unicode newline sequence]),
              ac_pcre_newline=any)
enable_newline="$ac_pcre_newline"

# Handle --enable-bsr-anycrlf
AC_ARG_ENABLE(bsr-anycrlf,
              AS_HELP_STRING([--enable-bsr-anycrlf],
                             [\R matches only CR, LF, CRLF by default]),
              , enable_bsr_anycrlf=no)

# Handle --enable-ebcdic
AC_ARG_ENABLE(ebcdic,
              AS_HELP_STRING([--enable-ebcdic],
                             [assume EBCDIC coding rather than ASCII; use this only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]),
              , enable_ebcdic=no)

# Handle --disable-stack-for-recursion
AC_ARG_ENABLE(stack-for-recursion,
              AS_HELP_STRING([--disable-stack-for-recursion],
                             [don't use stack recursion when matching]),
              , enable_stack_for_recursion=yes)

# Handle --with-posix-malloc-threshold=NBYTES
AC_ARG_WITH(posix-malloc-threshold,
            AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
                           [threshold for POSIX malloc usage (default=10)]),
            , with_posix_malloc_threshold=10)

# Handle --with-link-size=N
AC_ARG_WITH(link-size,
            AS_HELP_STRING([--with-link-size=N],
                           [internal link size (2, 3, or 4 allowed; default=2)]),
            , with_link_size=2)

# Handle --with-match-limit=N
AC_ARG_WITH(match-limit,
            AS_HELP_STRING([--with-match-limit=N],
                           [default limit on internal looping (default=10000000)]),
            , with_match_limit=10000000)

# Handle --with-match-limit_recursion=N
#
# Note: In config.h, the default is to define MATCH_LIMIT_RECURSION
# symbolically as MATCH_LIMIT, which in turn is defined to be some numeric
# value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some
# different numeric value (or even the same numeric value as MATCH_LIMIT,
# though no longer defined in terms of the latter).
#
AC_ARG_WITH(match-limit-recursion,
            AS_HELP_STRING([--with-match-limit-recursion=N],
                           [default limit on internal recursion (default=MATCH_LIMIT)]),
            , with_match_limit_recursion=MATCH_LIMIT)

# Make sure that if enable_unicode_properties was set, that UTF-8 support
# is enabled.
#
if test "x$enable_unicode_properties" = "xyes"
then
  if test "x$enable_utf8" = "xno"
  then
    AC_MSG_ERROR([support for Unicode properties requires UTF-8 support])
  fi
  enable_utf8=yes
fi

if test "x$enable_utf8" = "xunset"
then
  enable_utf8=no
fi

# Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled.
#
if test "x$enable_ebcdic" = "xyes"
then
  enable_rebuild_chartables=yes
fi

# Convert the newline identifier into the appropriate integer value.
case "$enable_newline" in
  lf)      ac_pcre_newline_value=10   ;;
  cr)      ac_pcre_newline_value=13   ;;
  crlf)    ac_pcre_newline_value=3338 ;;
  anycrlf) ac_pcre_newline_value=-2   ;;
  any)     ac_pcre_newline_value=-1   ;;
  *)
  AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
  ;;
esac

# Check argument to --with-link-size
case "$with_link_size" in
  2|3|4) ;;
  *)
  AC_MSG_ERROR([invalid argument \"$with_link_size\" to --with-link-size option])
  ;;
esac