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f957ffbe4b
elinks/configure.in
Kalle Olavi Niemitalo baba32e2fc ELinks 0.11.5.GIT
2008-09-21 00:27:40 +03:00

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dnl Process this file with autoconf to produce a configure script.
dnl Autoconf 2.13 generates an incomplete config.h.in; see ELinks bug 936.
dnl Autoconf 2.59 is installed in the computer that generates our nightly
dnl snapshots, so we need to be compatible with that.
AC_PREREQ(2.59)
AC_INIT(src/main/main.c)
AC_CONFIG_AUX_DIR(config)
PACKAGE=elinks
VERSION=0.11.5.GIT
AC_SUBST(PACKAGE)
AC_SUBST(VERSION)
AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Package version])
AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Package version])
AC_CONFIG_HEADERS(config.h)
AC_CHECK_PROG(ACLOCAL,[aclocal],[aclocal],[config/missing aclocal])
AC_CHECK_PROG(AUTOCONF,[autoconf],[autoconf],[config/missing autoconf])
AC_CHECK_PROG(AUTOHEADER,[autoheader],[autoheader],[config/missing autoheader])
MAKE=
for make in gnumake gmake make false; do
if test "x$MAKE" = x; then
AC_PATH_PROGS(MAKE, "$make")
fi
done
builddir="`pwd`"
# Cleanup if we are configuring with a previous build in the tree
if test -e Makefile.config; then
AC_MSG_CHECKING([for previous build to clean])
"$MAKE" -C "$builddir/src" cleanall >/dev/null 2>/dev/null
AC_MSG_RESULT(done)
fi
dnl ===================================================================
dnl Load feature configuration file and start logging features.
dnl ===================================================================
features="features.conf"
AC_CHECK_FILE("$srcdir/$features", [ . $srcdir/$features ])
AC_CHECK_FILE("$builddir/$features", [ . $builddir/$features ])
echo "Feature summary:" > features.log
dnl ===================================================================
dnl Checks for programs.
dnl ===================================================================
AC_PROG_CC
AC_PROG_AWK
AC_PATH_PROGS(AWK, "$AWK")
AC_PROG_RANLIB
AC_PROG_INSTALL
AC_PATH_PROGS(GIT, "git")
AC_PATH_PROGS(SPARSE, "sparse")
CONFIG_ASCIIDOC="no"
CONFIG_POD2HTML="no"
CONFIG_XMLTO="no"
CONFIG_JW="no"
if test "x$CONFIG_DOC" != xno; then
AC_PATH_PROGS(ASCIIDOC, "asciidoc")
if test "x$ASCIIDOC" != "x"; then
EL_CONFIG(CONFIG_ASCIIDOC, [AsciiDoc])
EL_CONFIG(MANUAL_ASCIIDOC, [HTML (one file)])
EL_CONFIG(MAN_ASCIIDOC, [HTML])
echo > config.asciidoc-unsafe.txt
if "$ASCIIDOC" --unsafe config.asciidoc-unsafe.txt >/dev/null 2>/dev/null; then
ASCIIDOC_FLAGS=--unsafe
fi
rm config.asciidoc-unsafe.*
fi
AC_PATH_PROGS(XMLTO, "xmlto")
if test "x$XMLTO" != "x"; then
EL_CONFIG(CONFIG_XMLTO, [XmlTo])
EL_CONFIG(MANUAL_XMLTO, [HTML (multiple files)])
EL_CONFIG(MAN_XMLTO, [man (groff)])
fi
AC_PATH_PROGS(JW, "jw")
if test "x$JW" != "x"; then
EL_CONFIG(CONFIG_JW, [JadeWrapper])
EL_CONFIG(MANUAL_JW, [PDF])
fi
AC_PATH_PROGS(POD2HTML, "pod2html")
if test "x$POD2HTML" != "x"; then
EL_CONFIG(CONFIG_POD2HTML, [Pod2HTML])
fi
fi
AC_SUBST(ASCIIDOC_FLAGS)
AC_SUBST(CONFIG_ASCIIDOC)
AC_SUBST(CONFIG_POD2HTML)
AC_SUBST(CONFIG_XMLTO)
AC_SUBST(CONFIG_JW)
EL_CONFIG_DEPENDS(CONFIG_DOC, [CONFIG_ASCIIDOC CONFIG_XMLTO CONFIG_JW CONFIG_POD2HTML], [Documentation Tools])
EL_CONFIG_DEPENDS(CONFIG_MANUAL, [MANUAL_ASCIIDOC MANUAL_XMLTO MANUAL_JW], [Manual Formats])
EL_CONFIG_DEPENDS(CONFIG_MANPAGE, [MAN_ASCIIDOC MAN_XMLTO], [Man Page Formats])
dnl gcc specific options (to be continued at the bottom of configure)
if test "x$ac_cv_prog_gcc" = "xyes"; then
dnl We want to see all warnings and live with none.
dnl We can't set up -Werror here as there may be some warnings in test
dnl suite of configure, and we don't want to fail them.
CFLAGS="$CFLAGS -Wall"
fi
dnl ===================================================================
dnl Checks for special OSes.
dnl ===================================================================
dnl EL_CHECK_COMPILER_MACRO(define, name, flagname)
AC_DEFUN([EL_CHECK_COMPILER_MACROS],
[
AC_MSG_CHECKING([for $2])
for flag in $3; do
AC_TRY_COMPILE(, [#ifndef $flag
kill me!
#endif ], $1=yes, $1=no)
if test "[$]$1" = yes; then
EL_CONFIG([$1], [$2])
break
fi
done
AC_MSG_RESULT([$]$1)
])
EL_CHECK_COMPILER_MACROS(CONFIG_BEOS, [BEOS], [__BEOS__])
AC_SUBST(CONFIG_BEOS)
EL_CHECK_COMPILER_MACROS(CONFIG_RISCOS, [RISCOS], [__riscos__])
AC_SUBST(CONFIG_RISCOS)
EL_CHECK_COMPILER_MACROS(CONFIG_WIN32, [WIN32], [_WIN32 __WIN32__])
AC_SUBST(CONFIG_WIN32)
EL_CHECK_COMPILER_MACROS(CONFIG_OS2, [EMX], [__EMX__])
AC_SUBST(CONFIG_OS2)
test "$CONFIG_OS2" = yes && LDFLAGS=`echo "$LDFLAGS" | sed "s/-Zexe//g"`
AC_MSG_CHECKING([for UNIX])
dnl FIXME: some depend kind of mechanism
if test "$CONFIG_BEOS" = no && \
test "$CONFIG_RISCOS" = no && \
test "$CONFIG_WIN32" = no && \
test "$CONFIG_OS2" = no; then
EL_CONFIG(CONFIG_UNIX, [UNIX])
else
CONFIG_UNIX=no
fi
AC_MSG_RESULT($CONFIG_UNIX)
AC_SUBST(CONFIG_UNIX)
dnl ===================================================================
dnl Checks for header files.
dnl ===================================================================
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_HEADER_TIME
AC_CHECK_HEADERS(fcntl.h limits.h time.h unistd.h)
AC_CHECK_HEADERS(sigaction.h)
AC_CHECK_HEADERS(arpa/inet.h)
AC_CHECK_HEADERS(netinet/in_systm.h netinet/in_system.h netinet/ip.h)
AC_CHECK_HEADERS(net/if.h netdb.h netinet/in.h netinet/in6_var.h)
AC_CHECK_HEADERS(ifaddrs.h)
AC_CHECK_HEADERS(sys/cygwin.h io.h)
AC_CHECK_HEADERS(sys/fmutex.h)
AC_CHECK_HEADERS(sys/ioctl.h sys/sockio.h)
AC_CHECK_HEADERS(sys/resource.h)
AC_CHECK_HEADERS(sys/select.h)
AC_CHECK_HEADERS(sys/signal.h)
AC_CHECK_HEADERS(sys/socket.h)
AC_CHECK_HEADERS(sys/time.h)
AC_CHECK_HEADERS(sys/utsname.h)
AC_CHECK_HEADERS(stdint.h inttypes.h)
AC_CHECK_HEADERS(locale.h pwd.h)
AC_CHECK_HEADERS(termios.h)
AC_CHECK_HEADERS(sys/un.h,
[CONFIG_INTERLINK=yes
EL_CONFIG([CONFIG_INTERLINK], [interlinking])],
[CONFIG_INTERLINK=no])
AC_SUBST(CONFIG_INTERLINK)
dnl ===================================================================
dnl Checks for typedefs, structures, and compiler characteristics.
dnl ===================================================================
AC_STRUCT_TM
AC_C_CONST
AC_C_INLINE
EL_CHECK_CODE(typeof, HAVE_TYPEOF, [], [int a; typeof(a) b;])
AC_SYS_LARGEFILE
AC_TYPE_SIZE_T
AC_TYPE_OFF_T
EL_CHECK_TYPE(ssize_t, int)
EL_CHECK_SYS_TYPE(long long, HAVE_LONG_LONG, [])
EL_CHECK_SYS_TYPE(off_t, HAVE_OFF_T, [])
EL_CHECK_INT_TYPE(int32_t, HAVE_INT32_T)
EL_CHECK_INT_TYPE(uint32_t, HAVE_UINT32_T)
EL_CHECK_INT_TYPE(uint16_t, HAVE_UINT16_T)
AC_CHECK_SIZEOF(char, 1)
AC_CHECK_SIZEOF(short, 2)
AC_CHECK_SIZEOF(int, 4)
AC_CHECK_SIZEOF(long, 4)
test "x$HAVE_LONG_LONG" = xyes && AC_CHECK_SIZEOF(long long, 8)
test "x$HAVE_OFF_T" = xyes && AC_CHECK_SIZEOF(off_t, 4)
dnl Check for variadic macros
EL_CHECK_CODE([variadic macros], HAVE_VARIADIC_MACROS,
[#include <stdio.h>
#define a(b,c...) printf(b,##c)],
[a("foo");a("%s","bar");a("%s%s","baz","quux");])
dnl Check for -rdynamic
dnl FIXME: This check doesn't work. Something to do with the compiler
dnl happily ignoring it and stderr not being checked for error messages.
AC_MSG_CHECKING([for -rdynamic])
LDFLAGS_X="$LDFLAGS"
LDFLAGS="$LDFLAGS -rdynamic"
AC_TRY_LINK([], [], have_rdynamic=yes, have_rdynamic=no)
test "$have_rdynamic" = no && LDFLAGS="$LDFLAGS_X"
AC_MSG_RESULT($have_rdynamic)
dnl ===================================================================
dnl Check for POSIX <regex.h>
dnl ===================================================================
EL_CHECK_SYS_TYPE(regex_t, HAVE_REGEX_H, [#include <regex.h>])
dnl ===================================================================
dnl Checks for library functions.
dnl ===================================================================
AC_PROG_GCC_TRADITIONAL
AC_FUNC_MEMCMP
AC_FUNC_MMAP
AC_FUNC_STRFTIME
AC_CHECK_FUNCS(gethostbyaddr herror strerror)
AC_CHECK_FUNCS(popen uname access chmod alarm timegm mremap)
AC_CHECK_FUNCS(strcasecmp strncasecmp strcasestr strstr strchr strrchr)
AC_CHECK_FUNCS(memmove bcopy stpcpy strdup index isdigit mempcpy memrchr)
AC_CHECK_FUNCS(snprintf vsnprintf asprintf vasprintf)
AC_CHECK_FUNCS(getifaddrs getpwnam inet_pton inet_ntop)
AC_CHECK_FUNCS(fflush fsync fseeko ftello sigaction)
AC_CHECK_FUNCS(gettimeofday clock_gettime)
AC_HAVE_FUNCS(cygwin_conv_to_full_win32_path)
AC_CHECK_FUNCS(setenv putenv, HAVE_SETENV_OR_PUTENV=yes)
AC_CHECK_FUNCS(getuid, HAVE_GETUID=yes)
AC_CHECK_FUNCS(geteuid, HAVE_GETEUID=yes)
dnl These aren't probably needed now, as they are commented in links.h.
dnl I've no idea about their historical background, but I keep them here
dnl just in the case they will help later. --pasky
AC_CHECK_FUNCS(getpid, HAVE_GETPID=yes)
AC_CHECK_FUNCS(setpgid getpgid setpgrp getpgrp)
AC_CHECK_FUNCS(raise, HAVE_RAISE=yes)
AC_CHECK_FUNCS(kill, HAVE_KILL=yes)
if test x"$HAVE_RAISE" = x; then
if test x"$HAVE_KILL" = x || test x"$HAVE_GETPID" = x; then
AC_ERROR([Unable to emulate raise()])
fi
fi
AC_CACHE_CHECK([for __va_copy],el_cv_HAVE_VA_COPY,[
AC_TRY_LINK([#include <stdarg.h>
va_list ap1,ap2;], [__va_copy(ap1,ap2);],
el_cv_HAVE_VA_COPY=yes,el_cv_HAVE_VA_COPY=no)])
if test x"$el_cv_HAVE_VA_COPY" = x"yes"; then
EL_DEFINE(HAVE_VA_COPY, __va_copy)
fi
AC_CACHE_CHECK([for sysconf(_SC_PAGE_SIZE)],el_cv_HAVE_SC_PAGE_SIZE,[
AC_TRY_LINK([#include <unistd.h>
], [int page_size = sysconf(_SC_PAGE_SIZE);],
el_cv_HAVE_SC_PAGE_SIZE=yes,el_cv_HAVE_SC_PAGE_SIZE=no)])
if test x"$el_cv_HAVE_SC_PAGE_SIZE" = x"yes"; then
EL_DEFINE(HAVE_SC_PAGE_SIZE, _SC_PAGE_SIZE)
fi
AC_CACHE_CHECK([for C99 vsnprintf],el_cv_HAVE_C99_VSNPRINTF,[
AC_TRY_RUN([
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
char buf[8];
int bar(char *buf, const char *format, va_list ap)
{
return vsnprintf(buf, 0, format, ap);
}
void foo(const char *format, ...) {
va_list ap;
int len;
va_start(ap, format);
len = bar(buf, format, ap);
va_end(ap);
if ((len != 6) && (len != 7)) exit(1); /* \n -> \r\n */
va_start(ap, format);
len = bar(buf, format, ap);
va_end(ap);
if ((len != 6) && (len != 7)) exit(1);
if (snprintf(buf, 3, "hello") != 5 || strcmp(buf, "he") != 0) exit(1);
exit(0);
}
main() { foo("hello\n"); }
],
el_cv_HAVE_C99_VSNPRINTF=yes,el_cv_HAVE_C99_VSNPRINTF=no,el_cv_HAVE_C99_VSNPRINTF=cross)])
if test x"$el_cv_HAVE_C99_VSNPRINTF" = x"yes"; then
EL_DEFINE(HAVE_C99_VSNPRINTF, [C99 compliant vsnprintf()])
fi
AC_CHECK_LIB(dl, dlopen) # OpenSSL and Lua frequently needs it
dnl ===================================================================
dnl Checks for libraries.
dnl ===================================================================
dnl Replace `main' with a function in -lsocket:
AC_CHECK_FUNC(socket, cf_result=yes, cf_result=no)
if test "$cf_result" = no; then
AC_CHECK_LIB(socket, socket)
fi
AC_CHECK_FUNC(setsockopt, cf_result=yes, cf_result=no)
if test "$cf_result" = no; then
AC_CHECK_LIB(socket, setsockopt)
fi
AC_CHECK_FUNC(gethostbyname, cf_result=yes, cf_result=no)
if test "$cf_result" = no; then
AC_CHECK_LIB(socket, gethostbyname, cf_result=yes, cf_result=no)
if test "$cf_result" = no; then
AC_CHECK_LIB(nsl, gethostbyname)
else
test -z "`echo $LIBS | grep -- -lsocket`" && LIBS="$LIBS -lsocket"
fi
fi
dnl ===================================================================
dnl Checks for packaging specific options.
dnl ===================================================================
AC_ARG_WITH(xterm, [ --with-xterm how to invoke the X terminal emulator],
[ if test "$withval" != no && test "$withval" != yes; then
AC_DEFINE_UNQUOTED(XTERM, "$withval", [How to invoke XTerm])
fi ])
dnl ===================================================================
dnl Checks for a libraries, optional even if installed.
dnl ===================================================================
dnl EL_CHECK_OPTIONAL_LIBRARY(define, name, header, lib, function)
AC_DEFUN([EL_CHECK_OPTIONAL_LIBRARY],
[
AC_MSG_CHECKING([for $2 support])
if test "[$]$1" != no; then
AC_MSG_RESULT(yes)
EL_SAVE_FLAGS
if test -n "$withval" && test -d "$withval"; then
CFLAGS="$CFLAGS -I$withval/include";
CPPFLAGS="$CPPFLAGS -I$withval/include";
LDFLAGS="$LDFLAGS -L$withval/lib";
fi
AC_CHECK_HEADERS([$3], [$1=yes], [$1=no; break;])
if test "[$]$1" = yes; then
AC_CHECK_LIB([$4], [$5], [$1=yes], [$1=no])
fi
if test "[$]$1" = yes; then
EL_CONFIG([$1], [$2])
LIBS="$LIBS -l$4"
else
if test -n "[$]WITHVAL_$1" &&
test "[$]WITHVAL_$1" != xno; then
AC_MSG_ERROR([$2 not found])
fi
EL_RESTORE_FLAGS
fi
else
AC_MSG_RESULT(disabled)
fi
])
dnl EL_CONFIG_OPTIONAL_LIBRARY(define, name, header, lib, function, confhelp)
AC_DEFUN([EL_CONFIG_OPTIONAL_LIBRARY],
[
$1=yes
WITHVAL_$1=
AC_ARG_WITH([$2], [$6], [WITHVAL_$1="[$]withval"])
if test "x[$]WITHVAL_$1" = xno; then $1=no; fi
EL_CHECK_OPTIONAL_LIBRARY([$1], [$2], [$3], [$4], [$5])
EL_LOG_CONFIG([$1], [$2], [])
])
EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GPM, gpm, gpm.h, gpm, Gpm_Open,
[ --without-gpm disable gpm (mouse) support])
EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_GZIP, zlib, zlib.h, z, gzdopen,
[ --without-zlib disable zlib support])
EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_BZIP2, bzlib, bzlib.h, bz2, BZ2_bzReadOpen,
[ --without-bzlib disable bzlib support])
EL_CONFIG_OPTIONAL_LIBRARY(CONFIG_IDN, idn, idna.h, idn, stringprep_check_version,
[ --without-idn disable international domain names support])
dnl ===================================================================
dnl Bookmark and XBEL support
dnl ===================================================================
EL_SAVE_FLAGS
EL_ARG_ENABLE(CONFIG_BOOKMARKS, bookmarks, [Bookmarks],
[ --disable-bookmarks disable bookmark support])
# Check whether --enable-xbel or --disable-xbel was given.
if test "x${enable_xbel}" != xno; then
AC_CHECK_HEADERS(expat.h, HAVE_LIBEXPAT=yes, HAVE_LIBEXPAT=no)
if test "$HAVE_LIBEXPAT" = yes; then
AC_CHECK_LIB(expat, XML_ParserCreate, HAVE_LIBEXPAT=yes, HAVE_LIBEXPAT=no)
if test "$HAVE_LIBEXPAT" = yes; then
LIBS="$LIBS -lexpat"
fi
fi
fi
EL_ARG_DEPEND(CONFIG_XBEL_BOOKMARKS, xbel, [CONFIG_BOOKMARKS:yes HAVE_LIBEXPAT:yes],
[XBEL bookmarks],
[ --disable-xbel disable XBEL bookmark support (requires expat)])
if test "$CONFIG_XBEL_BOOKMARKS" != yes; then
EL_RESTORE_FLAGS
fi
dnl ===================================================================
dnl Checks for BSD sysmouse
dnl ===================================================================
HAVE_SYSMOUSE_HEADER="no"
# Either of these header files provides the (same) sysmouse interface
AC_CHECK_HEADERS(sys/consio.h machine/console.h, [HAVE_SYSMOUSE_HEADER="yes"])
dnl ===================================================================
dnl Checks for OS/2
dnl ===================================================================
if test "$CONFIG_OS2" = yes; then
EL_CONFIG_OS2
fi
dnl ===================================================================
dnl Checks for Win32
dnl ===================================================================
if test "$CONFIG_WIN32" = yes; then
EL_CONFIG_WIN32
fi
dnl ===================================================================
dnl Check for SpiderMonkey, optional even if installed.
dnl ===================================================================
AC_ARG_WITH(spidermonkey, [ --without-spidermonkey disable SpiderMonkey Mozilla JavaScript engine support],
[if test "$withval" = no; then disable_spidermonkey=yes; fi])
AC_MSG_CHECKING([for SpiderMonkey])
EL_SAVE_FLAGS
cf_result=no
if test -z "$disable_spidermonkey"; then
if test ! -d "$withval"; then
withval="";
fi
for spidermonkeydir in "$withval" "" /usr /usr/local /opt/spidermonkey /opt/js; do
for spidermonkeyinclude in "/include" "/include/js" "/include/smjs" "/include/mozjs"; do
for spidermonkeylib in js smjs mozjs; do
if test "$cf_result" = no; then
SPIDERMONKEY_LIBS="-l$spidermonkeylib"
if test ! -z "$spidermonkeydir"; then
SPIDERMONKEY_LIBS="-L$spidermonkeydir/lib $SPIDERMONKEY_LIBS"
SPIDERMONKEY_CFLAGS="-I$spidermonkeydir$spidermonkeyinclude"
fi
LIBS="$SPIDERMONKEY_LIBS $LIBS_X"
CFLAGS="$CFLAGS_X $SPIDERMONKEY_CFLAGS"
CPPFLAGS="$CPPFLAGS_X $SPIDERMONKEY_CFLAGS"
AC_TRY_LINK([#define XP_UNIX
#include <jsapi.h>],
[JS_GetImplementationVersion()],
cf_result=yes, cf_result=no)
fi
done
done
done
fi
AC_MSG_RESULT($cf_result)
if test "$cf_result" != yes; then
EL_RESTORE_FLAGS
else
EL_CONFIG(CONFIG_SPIDERMONKEY, [SpiderMonkey])
CFLAGS="$CFLAGS_X"
AC_SUBST(SPIDERMONKEY_LIBS)
AC_SUBST(SPIDERMONKEY_CFLAGS)
fi
AC_SUBST(CONFIG_SPIDERMONKEY)
EL_CONFIG_DEPENDS(CONFIG_ECMASCRIPT, [CONFIG_SPIDERMONKEY], [ECMAScript (JavaScript)])
dnl ===================================================================
dnl Check for Guile, optional even if installed.
dnl ===================================================================
enable_guile="no";
AC_ARG_WITH(guile, [ --with-guile enable Guile support],
[ if test "x$withval" != xno; then enable_guile=yes; fi ])
# The following is probably bad, ugly and so on. Stolen from Guile's (1.4)
# GUILE_FLAGS but I really don't want to require people to have Guile in order
# to compile CVS. Also, the macro seems to be really stupid regarding searching
# for Guile in $PATH etc. --pasky
AC_MSG_CHECKING([for Guile])
if test "$enable_guile" = "yes"; then
AC_MSG_RESULT(yes);
## Based on the GUILE_FLAGS macro.
if test -d "$withval"; then
GUILE_PATH="$withval:$PATH"
else
GUILE_PATH="$PATH"
fi
AC_PATH_PROG(GUILE_CONFIG, guile-config, no, $GUILE_PATH)
## First, let's just see if we can find Guile at all.
if test "$GUILE_CONFIG" != no; then
cf_result="yes";
GUILE_LIBS="`guile-config link`"
GUILE_CFLAGS="`guile-config compile`"
LIBS="$GUILE_LIBS $LIBS"
CPPFLAGS="$CPPFLAGS $GUILE_CFLAGS"
EL_CONFIG(CONFIG_GUILE, [Guile])
AC_SUBST(GUILE_CFLAGS)
cat <<EOF
***********************************************************************
The Guile support is incomplete and not so well integrated to ELinks
yet. That means, e.g., that you have no Guile console and there might
not be all the necessary hooks. Also, the Guile interface is not too
well tested (success stories heartily welcomed!). See
src/scripting/guile/README for further details and hints.
***********************************************************************
EOF
else
if test -n "$withval" && test "x$withval" != xno; then
AC_MSG_ERROR([Guile not found])
else
AC_MSG_WARN([Guile support disabled])
fi
fi
else
AC_MSG_RESULT(no);
fi
dnl ===================================================================
dnl Check for Perl
dnl ===================================================================
enable_perl="no";
AC_ARG_WITH(perl, [ --with-perl enable Perl support],
[
if test "$withval" = yes; then
# FIXME: If withval is a valid directory append it to PATH
# so that you can specify one of several perl installations.
withval="";
enable_perl=yes;
fi
])
AC_MSG_CHECKING([for Perl])
cf_result=no
EL_SAVE_FLAGS
if test "$enable_perl" = "yes"; then
PERL_LIBS="`perl -MExtUtils::Embed -e ldopts`"
PERL_CFLAGS="`perl -MExtUtils::Embed -e ccopts`"
LIBS="$PERL_LIBS $LIBS"
CFLAGS="$PERL_CFLAGS $CFLAGS"
CPPFLAGS="$CPPFLAGS $PERL_CFLAGS"
AC_TRY_LINK([
#include <EXTERN.h>
#include <perl.h>
#include <perlapi.h>
],
[PerlInterpreter *my_perl = perl_alloc();],
cf_result=yes, cf_result=no)
fi
if test "$cf_result"; then AC_MSG_RESULT($cf_result); fi
AC_MSG_CHECKING([whether POPpx works without an n_a variable])
AC_TRY_COMPILE([
#include <EXTERN.h>
#include <perl.h>
extern PerlInterpreter *my_perl;
],
[dSP; (void) POPpx;],
[AC_MSG_RESULT([yes])
AC_DEFINE([CONFIG_PERL_POPPX_WITHOUT_N_A], [1],
[Define if using Perl 5.8.8 or later, where the "POPpx" macro
no longer needs an "n_a" variable like it did in 5.8.7])],
[AC_MSG_RESULT([no])])
if test "$cf_result" != "yes"; then
EL_RESTORE_FLAGS
else
EL_CONFIG(CONFIG_PERL, [Perl])
CFLAGS="$CFLAGS_X"
AC_SUBST(PERL_LIBS)
AC_SUBST(PERL_CFLAGS)
fi
dnl ===================================================================
dnl Check for Python
dnl ===================================================================
enable_python="no";
AC_ARG_WITH(python, [ --with-python enable Python support],
[
if test "$withval" = yes; then
# FIXME: If withval is a valid directory append it to PATH
# so that you can specify one of several Python installations.
withval="";
enable_python=yes;
cat <<EOF
***********************************************************************
The Python support is incomplete and not so well integrated to ELinks
yet. That means, e.g.., that you have no Python console and there might
not be all the necessary hooks. Also, the Python interface is not too
well tested (success stories heartily welcomed!).
***********************************************************************
EOF
fi
])
AC_MSG_CHECKING([for Python])
cf_result=no
EL_SAVE_FLAGS
if test "$enable_python" = "yes"; then
PYTHON_LIBS="-lpython`python -c 'from distutils import sysconfig; print sysconfig.get_config_var("VERSION")' 2> /dev/null`"
PYTHON_CFLAGS="-I`python -c 'from distutils import sysconfig; print sysconfig.get_python_inc()' 2> /dev/null`"
LIBS="$PYTHON_LIBS $LIBS"
CFLAGS="$PYTHON_CFLAGS $CFLAGS"
CPPFLAGS="$CPPFLAGS $PYTHON_CFLAGS"
AC_TRY_LINK([
#include <Python.h>
],
[Py_Initialize();],
cf_result=yes, cf_result=no)
fi
if test "$cf_result" != "yes"; then
EL_RESTORE_FLAGS
else
EL_CONFIG(CONFIG_PYTHON, [Python])
CFLAGS="$CFLAGS_X"
AC_SUBST(PYTHON_LIBS)
AC_SUBST(PYTHON_CFLAGS)
fi
if test "$cf_result"; then AC_MSG_RESULT($cf_result); fi
dnl ===================================================================
dnl Check for Lua, optional even if installed.
dnl ===================================================================
dnl Do this the long way, as FreeBSD reportedly needs -L<dir> for
dnl anything other than /usr/lib, and Lua is very often in /usr/local/lib.
AC_ARG_WITH(lua, [ --without-lua disable Lua support],
[if test "$withval" = no; then disable_lua=yes; fi])
AC_MSG_CHECKING([for Lua])
EL_SAVE_FLAGS
cf_result=no
if test -z "$disable_lua"; then
if test ! -d "$withval"; then
withval="";
fi
for luadir in "$withval" "" /usr /usr/local; do
for suffix in "" 50; do
if test "$cf_result" = no; then
LUA_LIBS="-llua$suffix -llualib$suffix -lm"
if test ! -z "$luadir"; then
LUA_LIBS="-L$luadir/lib $LUA_LIBS"
LUA_CFLAGS="-I$luadir/include -I$luadir/include/lua$suffix"
fi
LIBS="$LUA_LIBS $LIBS_X"
CFLAGS="$CFLAGS_X $LUA_CFLAGS"
CPPFLAGS="$CPPFLAGS_X $LUA_CFLAGS"
# Check that it is a compatible Lua version
AC_TRY_LINK([ #include <lua.h>
#include <lualib.h>],
[ lua_State *L = lua_open();
luaopen_base(L);
luaopen_table(L);
luaopen_io(L);
luaopen_string(L);
luaopen_math(L);
lua_pushboolean(L, 1);
lua_close(L);],
cf_result=yes, cf_result=no)
fi
done
done
fi
AC_MSG_RESULT($cf_result)
if test "$cf_result" != yes; then
EL_RESTORE_FLAGS
else
EL_CONFIG(CONFIG_LUA, [Lua])
AC_CHECK_HEADERS(lauxlib.h)
CFLAGS="$CFLAGS_X"
AC_SUBST(LUA_LIBS)
AC_SUBST(LUA_CFLAGS)
fi
dnl ===================================================================
dnl Check for Ruby, optional even if installed.
dnl ===================================================================
EL_CONFIG_RUBY
dnl ===================================================================
dnl Optional Spidermonkey-based ECMAScript browser scripting
dnl ===================================================================
AC_ARG_ENABLE(sm-scripting,
[ --disable-sm-scripting ECMAScript browser scripting (requires Spidermonkey)],
[if test "$enableval" != no; then enableval="yes"; fi
CONFIG_SM_SCRIPTING="$enableval";])
if test "x$CONFIG_SPIDERMONKEY" = xyes &&
test "x$CONFIG_SM_SCRIPTING" = xyes; then
EL_CONFIG(CONFIG_SM_SCRIPTING, [SpiderMonkey])
else
CONFIG_SM_SCRIPTING=no
fi
dnl ===================================================================
dnl Setup global scripting
dnl ===================================================================
EL_CONFIG_DEPENDS(CONFIG_SCRIPTING, [CONFIG_GUILE CONFIG_LUA CONFIG_PERL CONFIG_PYTHON CONFIG_RUBY CONFIG_SM_SCRIPTING], [Browser scripting])
AC_SUBST(CONFIG_GUILE)
AC_SUBST(CONFIG_LUA)
AC_SUBST(CONFIG_PERL)
AC_SUBST(CONFIG_PYTHON)
AC_SUBST(CONFIG_RUBY)
AC_SUBST(CONFIG_SM_SCRIPTING)
AC_SUBST(CONFIG_SCRIPTING)
dnl ===================================================================
dnl Check for SSL support.
dnl ===================================================================
dnl We by default use OpenSSL, and we always prefer it. However, when GNUTLS
dnl is enabled, we won't try to use OpenSSL anymore.
dnl For wiping SSL hooks..
#ifdef CONFIG_SSL
disable_openssl=""
disable_gnutls=""
enable_gnutls=""
AC_ARG_WITH(gnutls, [ --without-gnutls disable GNUTLS SSL support],
[if test "$with_gnutls" = no; then disable_gnutls=yes; fi])
AC_ARG_WITH(gnutls, [ --with-gnutls[=DIR] enable GNUTLS SSL support],
[if test "$with_gnutls" != no; then enable_gnutls=yes; fi])
gnutls_withval="$withval"
if test "$enable_gnutls" = yes; then
disable_openssl=yes;
fi
AC_ARG_WITH(openssl, [ --without-openssl disable OpenSSL support],
[if test "$with_openssl" = no; then disable_openssl=yes; fi])
AC_ARG_WITH(openssl, [ --with-openssl[=DIR] enable OpenSSL support (default)])
openssl_withval="$withval"
dnl ---- OpenSSL
AC_MSG_CHECKING([for OpenSSL])
EL_SAVE_FLAGS
cf_result="no"
if test "$disable_openssl" = yes; then
cf_result="not used"
else
for ssldir in "$openssl_withval" "" /usr /usr/local/openssl \
/usr/lib/openssl /usr/local/ssl \
/usr/local/www /usr/lib/ssl /usr/local \
/usr/pkg /opt /opt/openssl; do
if test "$cf_result" = no; then
if test -d "$ssldir"; then
OPENSSL_CFLAGS="-I$ssldir/include"
LIBS="-L$ssldir/lib -lssl -lcrypto $LIBS_X"
CFLAGS="$CFLAGS_X $OPENSSL_CFLAGS"
CPPFLAGS="$CPPFLAGS_X $OPENSSL_CFLAGS"
# # FIXME: This created serious portability problems. --pasky
# if test "$CC" == "gcc"; then
# # I'm not sure about compatibility here. --pasky
# LIBS="$LIBS -R$ssldir/lib"
# fi
else
LIBS="-lssl -lcrypto $LIBS_X"
fi
AC_TRY_LINK([#include <openssl/ssl.h>],
[OpenSSL_add_all_algorithms()],
cf_result=yes, cf_result=no)
if test "$cf_result" != yes; then
AC_TRY_LINK([#include <openssl/ssl.h>],
[SSLeay_add_ssl_algorithms()],
cf_result=yes, cf_result=no)
fi
fi
done
if test "$cf_result" != yes; then
if test -n "$openssl_withval" && test "x$openssl_withval" != xno; then
AC_MSG_ERROR([OpenSSL not found])
fi
EL_RESTORE_FLAGS
else
EL_CONFIG(CONFIG_OPENSSL, [OpenSSL])
CFLAGS="$CFLAGS_X"
AC_SUBST(OPENSSL_CFLAGS)
fi
fi
AC_MSG_RESULT($cf_result)
CONFIG_GNUTLS_OPENSSL_COMPAT=no
dnl ---- GNU TLS
dnl We can't have AC_MSG_CHECKING here, because AC_PATH_PROG prints its own and
dnl it looks ugly then.
if test "$cf_result" = yes; then
cf_result="not used"
else
EL_SAVE_FLAGS
cf_result="no"
if test -z "$disable_gnutls"; then
# Sure, we maybe _could_ use their macro, but how to ensure
# that the ./configure script won't fail if the macro won't be
# found..? :( --pasky
GNUTLS_PATH="$PATH:/usr/local/gnutls:/opt:/opt/gnutls"
if test -d "$gnutls_withval"; then
GNUTLS_PATH="$gnutls_withval:$GNUTLS_PATH"
fi
AC_PATH_PROG(LIBGNUTLS_CONFIG, libgnutls-config, no, $GNUTLS_PATH)
if test "$LIBGNUTLS_CONFIG" = "no" ; then
cf_result=no
else
GNUTLS_CFLAGS=`$LIBGNUTLS_CONFIG --cflags`
GNUTLS_LIBS=`$LIBGNUTLS_CONFIG --libs`
LIBS="$GNUTLS_LIBS $LIBS_X"
CFLAGS="$CFLAGS_X $GNUTLS_CFLAGS"
CPPFLAGS="$CPPFLAGS_X $GNUTLS_CFLAGS"
# Verify if it's really usable. gnutls_session was
# renamed to gnutls_session_t before GNU TLS 1.2.0
# (on 2004-06-13); ELinks now requires this.
AC_TRY_LINK([#include <gnutls/gnutls.h>],
[gnutls_session_t dummy;
gnutls_check_version(NULL)],
cf_result=yes, cf_result=no)
fi
if test "$cf_result" = yes; then
EL_CONFIG(CONFIG_GNUTLS, [GNUTLS])
CFLAGS="$CFLAGS_X"
AC_SUBST(GNUTLS_CFLAGS)
# GnuTLS 2.2.0 changed libgnutls-openssl from GPLv2+
# to GPLv3+. Don't link that with the GPLv2 ELinks.
# ELinks will use its internal MD5 code instead.
CONFIG_GNUTLS_OPENSSL_COMPAT=no
else
if test -n "$gnutls_withval" && test "x$gnutls_withval" != xno; then
AC_MSG_ERROR([GNUTLS (1.2 or later) not found. ELinks no longer supports GNUTLS 1.1.])
fi
EL_RESTORE_FLAGS
fi
fi
fi
AC_MSG_CHECKING([for GNU TLS (1.2 or later)])
AC_MSG_RESULT($cf_result)
dnl Final SSL setup
EL_CONFIG_DEPENDS(CONFIG_SSL, [CONFIG_OPENSSL CONFIG_GNUTLS], [SSL])
AC_SUBST(CONFIG_GNUTLS_OPENSSL_COMPAT)
AC_SUBST(CONFIG_OPENSSL)
AC_SUBST(CONFIG_GNUTLS)
#endif
AC_MSG_CHECKING([whether to be or not to be])
AC_MSG_RESULT([needs to be determined experimentally])
dnl ===================================================================
dnl Check for IPv6 support and related functions.
dnl ===================================================================
EL_CHECK_NET_TYPE(struct sockaddr_storage, HAVE_SA_STORAGE, [])
EL_CHECK_NET_TYPE(struct sockaddr_in6, HAVE_SA_IN6, [#include <netinet/in.h>])
EL_CHECK_NET_TYPE(struct addrinfo, HAVE_ADDRINFO, [#include <netdb.h>])
AC_CHECK_FUNC(getaddrinfo, HAVE_GETADDRINFO=yes, HAVE_GETADDRINFO=no)
if test "$HAVE_GETADDRINFO" != yes; then
AC_CHECK_LIB(inet6, getaddrinfo, HAVE_GETADDRINFO=yes, HAVE_GETADDRINFO=no)
if test "$HAVE_GETADDRINFO" = yes; then
LIBS="$LIBS -linet6"
fi
fi
dnl ===================================================================
dnl Checking for X11 (window title restoring).
dnl ===================================================================
AC_PATH_X
if test x"$no_x" != xyes; then
EL_SAVE_FLAGS
if test -n "$x_includes"; then
X_CFLAGS="-I$x_includes"
CPPFLAGS="$CPPFLAGS -I$x_includes"
fi
if test -n "$x_libraries"; then
LDFLAGS="$LDFLAGS -L$x_libraries"
fi
LIBS="-lX11 $LIBS"
AC_TRY_LINK([#include <X11/Xlib.h>],[XrmInitialize()],
cf_result=yes, cf_result=no)
EL_RESTORE_FLAGS
if test "$cf_result" = yes; then
if test -n "$x_libraries"; then
LDFLAGS="$LDFLAGS -L$x_libraries"
fi
LIBS="-lX11 $LIBS"
EL_DEFINE(HAVE_X11, [X11 for restoring window titles])
AC_SUBST(X_CFLAGS)
fi
fi
dnl ===================================================================
dnl Backtraces displaying support.
dnl ===================================================================
AC_CHECK_HEADERS(execinfo.h, HAVE_EXECINFO=yes, HAVE_EXECINFO=no)
# possible checks for other system-specific means go here
dnl ===================================================================
dnl SMB protocol support.
dnl ===================================================================
AC_CHECK_PROG(HAVE_SMBCLIENT, smbclient, yes, no)
dnl ===================================================================
dnl Gettext grey zone. Beware.
dnl ===================================================================
ALL_LINGUAS="be bg ca cs da de el es et fi fr gl hr hu id is it lt nl nb pl pt pt_BR ro ru sk sr sv tr uk"
AM_GNU_GETTEXT
dnl AC_MSG_CHECKING([how many characters your English alphabet has])
dnl # f33r d4 l33t... I hope it's portable. :)
dnl cf_result=$((48#z - 48#a + 1));
dnl AC_MSG_RESULT($cf_result)
dnl ===================================================================
dnl Compile-time features control
dnl ===================================================================
EL_ARG_ENABLE(CONFIG_COOKIES, cookies, [Cookies],
[ --disable-cookies disable cookie support])
EL_ARG_ENABLE(CONFIG_FORMHIST, formhist, [Form history],
[ --disable-formhist disable form history support])
EL_ARG_ENABLE(CONFIG_GLOBHIST, globhist, [Global history],
[ --disable-globhist disable global history support])
EL_ARG_ENABLE(CONFIG_MAILCAP, mailcap, [Mailcap],
[ --disable-mailcap disable mailcap support])
EL_ARG_ENABLE(CONFIG_MIMETYPES, mimetypes, [Mimetypes files],
[ --disable-mimetypes disable mimetypes files support])
EL_ARG_DEPEND(CONFIG_IPV6, ipv6,
[HAVE_SA_STORAGE:yes HAVE_SA_IN6:yes HAVE_ADDRINFO:yes HAVE_GETADDRINFO:yes],
[IPv6],
[ --disable-ipv6 disable IPv6 support])
EL_ARG_ENABLE(CONFIG_BITTORRENT, bittorrent, [BitTorrent protocol],
[ --enable-bittorrent enable BitTorrent protocol support])
EL_ARG_ENABLE(CONFIG_DATA, data, [Data protocol],
[ --disable-data disable data protocol support])
EL_ARG_ENABLE(CONFIG_URI_REWRITE, uri-rewrite, [URI rewriting],
[ --disable-uri-rewrite disable URI rewrite support])
EL_ARG_DEPEND(CONFIG_CGI, cgi, [HAVE_SETENV_OR_PUTENV:yes], [Local CGI],
[ --enable-cgi enable local CGI support])
EL_ARG_ENABLE(CONFIG_FINGER, finger, [Finger protocol],
[ --enable-finger enable finger protocol support])
dnl ===================================================================
dnl FSP protocol
dnl ===================================================================
EL_SAVE_FLAGS
if test "x${enable_fsp}" != xno; then
AC_CHECK_HEADERS(fsplib.h, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
if test "$HAVE_FSPLIB" = yes; then
AC_CHECK_LIB(fsplib, fsp_open_session, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
if test "$HAVE_FSPLIB" = yes; then
LIBS="$LIBS -lfsplib"
else
AC_CHECK_LIB(fsp, fsp_open_session, HAVE_FSPLIB=yes, HAVE_FSPLIB=no)
if test "$HAVE_FSPLIB" = yes; then
LIBS="$LIBS -lfsp"
fi
fi
fi
fi
EL_ARG_DEPEND(CONFIG_FSP, fsp, [HAVE_FSPLIB:yes], [FSP protocol],
[ --enable-fsp enable FSP protocol support])
if test "x$CONFIG_FSP" = xno; then
EL_RESTORE_FLAGS
fi
EL_ARG_ENABLE(CONFIG_FTP, ftp, [FTP protocol],
[ --disable-ftp disable ftp protocol support])
EL_ARG_ENABLE(CONFIG_GOPHER, gopher, [Gopher protocol],
[ --enable-gopher enable gopher protocol support])
EL_ARG_ENABLE(CONFIG_NNTP, nntp, [NNTP protocol],
[ --enable-nntp enable nntp protocol support])
dnl Force disable SMB before EL_ARG_DEPEND so that it logs the correct value.
if test "${enable_smb-no}" != no || test "${CONFIG_SMB-no}" != no; then
AC_MSG_WARN([Forcing --disable-smb because of vulnerability CVE-2006-5925.
If you want to use SMB, please wait for ELinks 0.12.0 or see bug 844.])
fi
enable_smb=no
CONFIG_SMB=no
EL_ARG_DEPEND(CONFIG_SMB, smb, [HAVE_SMBCLIENT:yes], [SMB protocol],
[ --enable-smb not currently allowed])
dnl EL_ARG_DEPEND(CONFIG_SMB, smb, [HAVE_SMBCLIENT:yes], [SMB protocol],
dnl [ --disable-smb disable SMB protocol support (requires smbclient)])
EL_ARG_ENABLE(CONFIG_MOUSE, mouse, [Mouse handling],
[ --disable-mouse disable mouse support])
# GPM mouse is Linux specific, so ...
CONFIG_SYSMOUSE=yes
EL_ARG_DEPEND(CONFIG_SYSMOUSE, sysmouse,
[CONFIG_MOUSE:yes CONFIG_GPM:no HAVE_SYSMOUSE_HEADER:yes],
[BSD sysmouse],
[ --disable-sysmouse disable BSD sysmouse support])
EL_ARG_ENABLE(CONFIG_88_COLORS, 88-colors, [88 colors],
[ --enable-88-colors enable 88 color support])
EL_ARG_ENABLE(CONFIG_256_COLORS, 256-colors, [256 colors],
[ --enable-256-colors enable 256 color support])
EL_ARG_ENABLE(CONFIG_EXMODE, exmode, [Exmode interface],
[ --enable-exmode enable exmode (CLI) interface])
EL_ARG_ENABLE(CONFIG_LEDS, leds, [LEDs],
[ --disable-leds disable LEDs support])
EL_ARG_ENABLE(CONFIG_MARKS, marks, [Marks],
[ --disable-marks disable document marks support])
EL_ARG_ENABLE(CONFIG_CSS, css, [Cascading Style Sheets],
[ --disable-css disable Cascading Style Sheet support])
EL_ARG_DEPEND(CONFIG_HTML_HIGHLIGHT, html-highlight, [CONFIG_CSS:yes], [HTML highlighting],
[ --enable-html-highlight HTML highlighting using DOM engine])
dnl Everything in the tree already uses CONFIG_DOM
dnl so resolve CONFIG_HTML_HIGHLIGHT to CONFIG_DOM
EL_CONFIG_DEPENDS(CONFIG_DOM, [CONFIG_HTML_HIGHLIGHT], [DOM engine])
EL_ARG_DEPEND(CONFIG_BACKTRACE, backtrace, [HAVE_EXECINFO:yes], [Backtrace],
[ --disable-backtrace disable backtrace support])
EL_ARG_DEPEND(CONFIG_NO_ROOT_EXEC, no-root, [HAVE_GETUID:yes HAVE_GETEUID:yes], [No root exec],
[ --enable-no-root enable prevention of usage by root])
EL_ARG_ENABLE(CONFIG_DEBUG, debug, [Debug mode],
[ --enable-debug enable leak debug and internal error checking])
EL_ARG_DEPEND(CONFIG_FASTMEM, fastmem, [CONFIG_DEBUG:no], [Fast mode],
[ --enable-fastmem enable direct use of system allocation functions, not usable with --enable-debug])
EL_ARG_ENABLE(CONFIG_OWN_LIBC, own-libc, [Own libc stubs],
[ --enable-own-libc force use of internal functions instead of those of system libc])
EL_ARG_ENABLE(CONFIG_SMALL, small, [Small binary],
[ --enable-small reduce binary size as far as possible (but see the bottom of doc/small.txt!)])
if test "$CONFIG_OPENSSL" != yes &&
test "$CONFIG_GNUTLS_OPENSSL_COMPAT" != yes ||
test "$CONFIG_OWN_LIBC" = yes;
then
AC_MSG_CHECKING(for built-in MD5 support)
AC_MSG_RESULT(yes)
EL_CONFIG(CONFIG_MD5, [Built-in MD5])
fi
AC_SUBST(CONFIG_MD5)
if test "$CONFIG_BITTORRENT" = yes; then
if test "$CONFIG_OPENSSL" != yes ||
test "$CONFIG_OWN_LIBC" = yes;
then
AC_MSG_CHECKING(for built-in SHA1 support)
AC_MSG_RESULT(yes)
EL_CONFIG(CONFIG_SHA1, [Built-in SHA1])
fi
fi
AC_SUBST(CONFIG_SHA1)
if test "$CONFIG_CSS" = yes || test "$CONFIG_DOM" = yes;
then
EL_CONFIG(CONFIG_SCANNER, [Built-in scanner])
fi
AC_SUBST(CONFIG_SCANNER)
AC_ARG_ENABLE(weehoofooboomookerchoo,
[
Also check out the features.conf file for more information about features!
],
[AC_MSG_ERROR(Are you strange, or what?)])
dnl == EMX hack
test "$CONFIG_OS2" = yes && LDFLAGS="$LDFLAGS -Zexe"
test "$CONFIG_OS2" = yes && LDFLAGS=`echo "$LDFLAGS" | sed "s/-Zbin-files//g"`
dnl ===================================================================
dnl Export directory paths
dnl ===================================================================
# Set up the ``entry points'' if they were not supplied by builder
test "x$prefix" = xNONE && prefix=$ac_default_prefix
test "x$exec_prefix" = xNONE && exec_prefix=${prefix}
# Create CONFDIR #define for config.h
# XXX: This may be dependent on a particular version of autoconf. Whatever,
# it's autoconf fault to force us to do such hacks ;p.
if test x"$sysconfdir" = x"\${prefix}/etc"; then
# sysconfdir is set to its default value... fine, let's append /elinks/
# XXX: We can't modify listing of the default in ./configure --help :-(
sysconfdir_n=`eval echo "$sysconfdir"`
sysconfdir=$sysconfdir_n
(echo "$sysconfdir" | grep elinks >/dev/null 2>/dev/null) || \
sysconfdir="$sysconfdir/elinks"
fi
CONFDIR=$sysconfdir
AC_DEFINE_UNQUOTED(CONFDIR, "$CONFDIR", [Directory containing default config])
AC_SUBST(CONFDIR)
# Create LOCALEDIR #define for config.h
test -z "$localedir" && localedir="$datadir/locale"
localedir0=`eval echo "$localedir"`
LOCALEDIR=`eval echo "$localedir0"`
AC_DEFINE_UNQUOTED(LOCALEDIR, "$LOCALEDIR", [Directory containing locales])
AC_SUBST(LOCALEDIR)
# Create LIBDIR #define for config.h
LIBDIR=`eval echo "$libdir"`
AC_DEFINE_UNQUOTED(LIBDIR, "$LIBDIR", [Directory containing libraries])
AC_SUBST(LIBDIR)
EL_LOG_CONFIG(CONFDIR, [System configuration directory], [])
EL_LOG_CONFIG(LOCALEDIR, [Locale catalogs directory], [])
dnl ===================================================================
dnl A little fine tuning of gcc specific options (continued)
dnl ===================================================================
if test "x$ac_cv_prog_gcc" = "xyes"; then
if test "$CONFIG_DEBUG" = "yes"; then
dnl We want to see all warnings and live with none (in debug mode).
CFLAGS="$CFLAGS -Werror"
fi
case "`$CC -dumpversion`" in
3.0|3.1|3.2)
# These should be ok using -Werror
;;
3.*)
# If gcc is version 3.3 (or higher?) it emits lots of false positive
# "dereferencing type-punned pointer will break strict-aliasing rules"
# warnings. Disable them by not doing any strict-aliasing. The
# alternative is just too ugly. Thanks gcc guys!! ;)
CFLAGS="$CFLAGS -fno-strict-aliasing"
;;
4.*)
# Do not show warnings related to (char * | unsigned char *) type
# difference.
CFLAGS="$CFLAGS -fno-strict-aliasing -Wno-pointer-sign"
;;
*)
# These should be ok using -Werror
;;
esac
# GCC 4.2.1 warns if we use the address of an object in Boolean context:
# warning: the address of `builtin_modules' will always evaluate as `true'
# This hits the object_lock and foreach_module macros in particular.
# It would be okay to put something in the macros to avoid the warning,
# but currently this seems to require defining parallel macros that skip
# the NULL check, and that's too ugly. So we instead disable the warning.
# GCC 4.2.1 needs -Wno-address, but GCC 4.2 snapshots need -Wno-always-true.
# GCC 4.1.3 recognizes neither and exits with code 1 if they are given.
for warning_flag in -Wno-address -Wno-always-true; do
AC_MSG_CHECKING([whether $CC accepts $warning_flag])
EL_SAVE_FLAGS
CFLAGS="$CFLAGS $warning_flag"
AC_TRY_COMPILE([], [],
[AC_MSG_RESULT([yes])
break],
[AC_MSG_RESULT([no])])
EL_RESTORE_FLAGS
done
# Bug 1012: Some parts of ELinks do arithmetic with signed integers
# in such a way that an overflow is possible. GCC 4.2.1 warns
# "warning: assuming signed overflow does not occur when assuming
# that (X + c) > X is always true", which may be an incorrect
# optimization (although allowed by the standard), and breaks the
# build with -Werror.
#
# All of the following tests included -S -Wall -Wextra:
#
# GCC: (GNU) 4.0.4 20060507 (prerelease) (Debian 4.0.3-3)
# * gcc-4.0 -O0: OK, compares the values
# * gcc-4.0 -O2: assumes no overflow, does not warn
# * gcc-4.0 -O0 -fno-strict-overflow: unrecognized command line option
# * gcc-4.0 -O0 -fwrapv: OK, compares the values
# * gcc-4.0 -O2 -fwrapv: OK, compares the values
# * gcc-4.0 -O0 -ftrapv: OK, calls __addvsi3
# * gcc-4.0 -O2 -ftrapv: assumes no overflow, does not warn
# * gcc-4.0 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
# * gcc-4.0 -O2 -fwrapv -ftrapv: compares the values
#
# GCC: (GNU) 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)
# * gcc-4.1 -O0: assumes no overflow, does not warn
# * gcc-4.1 -O2: assumes no overflow, does not warn
# * gcc-4.1 -O0 -fno-strict-overflow: unrecognized command line option
# * gcc-4.1 -O0 -fwrapv: OK, compares the values
# * gcc-4.1 -O2 -fwrapv: OK, compares the values
# * gcc-4.1 -O0 -ftrapv: OK, calls __addvsi3
# * gcc-4.1 -O2 -ftrapv: compares the values
# * gcc-4.1 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
# * gcc-4.1 -O2 -fwrapv -ftrapv: compares the values
#
# GCC: (GNU) 4.2.1 (Debian 4.2.1-5)
# * gcc-4.2 -O0: OK, compares the values
# * gcc-4.2 -O2: assumes no overflow, warns about it
# * gcc-4.2 -O0 -fno-strict-overflow: OK, compares the values
# * gcc-4.2 -O2 -fno-strict-overflow: OK, compares the values
# * gcc-4.2 -O0 -fwrapv: OK, compares the values
# * gcc-4.2 -O2 -fwrapv: OK, compares the values
# * gcc-4.2 -O0 -ftrapv: OK, calls __addvsi3
# * gcc-4.2 -O2 -ftrapv: compares the values
# * gcc-4.2 -O0 -fwrapv -ftrapv: OK, calls __addvsi3
# * gcc-4.2 -O2 -fwrapv -ftrapv: compares the values
#
# Apparently, -ftrapv does not work reliably at all.
for overflow_flag in -fno-strict-overflow -fwrapv; do
AC_MSG_CHECKING([whether $CC accepts $overflow_flag])
EL_SAVE_FLAGS
CFLAGS="$CFLAGS $overflow_flag"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
[AC_MSG_RESULT([yes])
break],
[AC_MSG_RESULT([no])])
EL_RESTORE_FLAGS
done
fi
# CFLAGS doesn't contain all compile flags. Some will be added only when
# needed in the respective source directory. To get all compile flags
# easily just add CPPFLAGS.
ALL_CFLAGS="$CFLAGS $CPPFLAGS"
EL_LOG_CONFIG(ALL_CFLAGS, [Compiler options (CFLAGS)], [])
EL_LOG_CONFIG(LIBS, [Linker options (LIBS)], [])
dnl ===================================================================
dnl Colored make output
dnl ===================================================================
if test $(`which tput` colors) -ge 4; then
MAKE_COLOR=1
AC_SUBST(MAKE_COLOR)
fi
dnl ===================================================================
dnl Generated files
dnl ===================================================================
AC_OUTPUT([ \
Makefile.config \
contrib/elinks.spec \
contrib/lua/hooks.lua \
contrib/conv/w3m2links.awk \
doc/man/man1/elinks.1 \
src/intl/gettext/ref-add.sed \
src/intl/gettext/ref-del.sed
])
abs_srcdir="$(cd "$srcdir" && pwd)"
# builddir is always absolute!
if test "$abs_srcdir" != "$builddir"; then
# Bootstrap the Makefile creation
echo "include $abs_srcdir/Makefile" > "$builddir/Makefile"
"$MAKE" "SRC=$abs_srcdir" init
# Make cg-status ignore this build directory
echo "*" > "$builddir/.gitignore"
fi
dnl ===================================================================
dnl Configuration summary
dnl ===================================================================
AC_MSG_RESULT(The following feature summary has been saved to features.log)
cat features.log
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