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 #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($have_rdynamic) dnl =================================================================== dnl Check for POSIX dnl =================================================================== EL_CHECK_SYS_TYPE(regex_t, HAVE_REGEX_H, [#include ]) dnl =================================================================== dnl Checks for library functions. dnl =================================================================== AC_PROG_GCC_TRADITIONAL AC_FUNC_MEMCMP AC_FUNC_MMAP AC_FUNC_STRFTIME AC_CHECK_FUNCS(gethostbyaddr herror strerror) AC_CHECK_FUNCS(popen uname access chmod alarm timegm mremap) AC_CHECK_FUNCS(strcasecmp strncasecmp strcasestr strstr strchr strrchr) AC_CHECK_FUNCS(memmove bcopy stpcpy strdup index isdigit mempcpy memrchr) AC_CHECK_FUNCS(snprintf vsnprintf asprintf vasprintf) AC_CHECK_FUNCS(getifaddrs getpwnam inet_pton inet_ntop) AC_CHECK_FUNCS(fflush fsync fseeko ftello sigaction) AC_CHECK_FUNCS(gettimeofday clock_gettime) AC_HAVE_FUNCS(cygwin_conv_to_full_win32_path) AC_CHECK_FUNCS(setenv putenv, HAVE_SETENV_OR_PUTENV=yes) AC_CHECK_FUNCS(getuid, HAVE_GETUID=yes) AC_CHECK_FUNCS(geteuid, HAVE_GETEUID=yes) dnl These aren't probably needed now, as they are commented in links.h. dnl I've no idea about their historical background, but I keep them here dnl just in the case they will help later. --pasky AC_CHECK_FUNCS(getpid, HAVE_GETPID=yes) AC_CHECK_FUNCS(setpgid getpgid setpgrp getpgrp) AC_CHECK_FUNCS(raise, HAVE_RAISE=yes) AC_CHECK_FUNCS(kill, HAVE_KILL=yes) if test x"$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 va_list ap1,ap2;], [__va_copy(ap1,ap2);], el_cv_HAVE_VA_COPY=yes,el_cv_HAVE_VA_COPY=no)]) if test x"$el_cv_HAVE_VA_COPY" = x"yes"; then EL_DEFINE(HAVE_VA_COPY, __va_copy) fi AC_CACHE_CHECK([for sysconf(_SC_PAGE_SIZE)],el_cv_HAVE_SC_PAGE_SIZE,[ AC_TRY_LINK([#include ], [int page_size = sysconf(_SC_PAGE_SIZE);], el_cv_HAVE_SC_PAGE_SIZE=yes,el_cv_HAVE_SC_PAGE_SIZE=no)]) if test x"$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 #include #include #include 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 $SPIDERMONKEY_CFLAGS" AC_TRY_LINK([#define XP_UNIX #include ], [JS_GetImplementationVersion()], cf_result=yes, cf_result=no) fi done done done fi AC_MSG_RESULT($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 $GUILE_CFLAGS" EL_CONFIG(CONFIG_GUILE, [Guile]) AC_SUBST(GUILE_CFLAGS) cat < #include #include ], [PerlInterpreter *my_perl = perl_alloc();], cf_result=yes, cf_result=no) fi if test "$cf_result"; then AC_MSG_RESULT($cf_result); fi AC_MSG_CHECKING([whether POPpx works without an n_a variable]) AC_TRY_COMPILE([ #include #include extern PerlInterpreter *my_perl; ], [dSP; (void) POPpx;], [AC_MSG_RESULT([yes]) AC_DEFINE([CONFIG_PERL_POPPX_WITHOUT_N_A], [1], [Define if using Perl 5.8.8 or later, where the "POPpx" macro no longer needs an "n_a" variable like it did in 5.8.7])], [AC_MSG_RESULT([no])]) if test "$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 < /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 $PYTHON_CFLAGS" AC_TRY_LINK([ #include ], [Py_Initialize();], cf_result=yes, cf_result=no) fi if test "$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($cf_result); fi dnl =================================================================== dnl Check for Lua, optional even if installed. dnl =================================================================== dnl Do this the long way, as FreeBSD reportedly needs -L for dnl anything other than /usr/lib, and Lua is very often in /usr/local/lib. AC_ARG_WITH(lua, [ --without-lua disable Lua support], [if test "$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 $LUA_CFLAGS" # Check that it is a compatible Lua version AC_TRY_LINK([ #include #include ], [ lua_State *L = lua_open(); luaopen_base(L); luaopen_table(L); luaopen_io(L); luaopen_string(L); luaopen_math(L); lua_pushboolean(L, 1); lua_close(L);], cf_result=yes, cf_result=no) fi done done fi AC_MSG_RESULT($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 $LIBS_X" fi AC_TRY_LINK([#include ], [OpenSSL_add_all_algorithms()], cf_result=yes, cf_result=no) if test "$cf_result" != yes; then AC_TRY_LINK([#include ], [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 $GNUTLS_CFLAGS" # Verify if it's really usable. gnutls_session was # renamed to gnutls_session_t before GNU TLS 1.2.0 # (on 2004-06-13); ELinks now requires this. AC_TRY_LINK([#include ], [gnutls_session_t dummy; gnutls_check_version(NULL)], cf_result=yes, cf_result=no) fi if test "$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 ]) EL_CHECK_NET_TYPE(struct addrinfo, HAVE_ADDRINFO, [#include ]) 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 $LIBS" AC_TRY_LINK([#include ],[XrmInitialize()], cf_result=yes, cf_result=no) EL_RESTORE_FLAGS if test "$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