`configure' configures tor 0.4.8.0-alpha-dev to adapt to many kinds of systems.

Usage: ./configure [OPTION]... [VAR=VALUE]...

To assign environment variables (e.g., CC, CFLAGS...), specify them as
VAR=VALUE.  See below for descriptions of some of the useful variables.

Defaults for the options are specified in brackets.

Configuration:
  -h, --help              display this help and exit
      --help=short        display options specific to this package
      --help=recursive    display the short help of all the included packages
  -V, --version           display version information and exit
  -q, --quiet, --silent   do not print `checking ...' messages
      --cache-file=FILE   cache test results in FILE [disabled]
  -C, --config-cache      alias for `--cache-file=config.cache'
  -n, --no-create         do not create output files
      --srcdir=DIR        find the sources in DIR [configure dir or `..']

Installation directories:
  --prefix=PREFIX         install architecture-independent files in PREFIX
                          [/usr/local]
  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
                          [PREFIX]

By default, `make install' will install all the files in
`/usr/local/bin', `/usr/local/lib' etc.  You can specify
an installation prefix other than `/usr/local' using `--prefix',
for instance `--prefix=$HOME'.

For better control, use the options below.

Fine tuning of the installation directories:
  --bindir=DIR            user executables [EPREFIX/bin]
  --sbindir=DIR           system admin executables [EPREFIX/sbin]
  --libexecdir=DIR        program executables [EPREFIX/libexec]
  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
  --libdir=DIR            object code libraries [EPREFIX/lib]
  --includedir=DIR        C header files [PREFIX/include]
  --oldincludedir=DIR     C header files for non-gcc [/usr/include]
  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
  --infodir=DIR           info documentation [DATAROOTDIR/info]
  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
  --mandir=DIR            man documentation [DATAROOTDIR/man]
  --docdir=DIR            documentation root [DATAROOTDIR/doc/tor]
  --htmldir=DIR           html documentation [DOCDIR]
  --dvidir=DIR            dvi documentation [DOCDIR]
  --pdfdir=DIR            pdf documentation [DOCDIR]
  --psdir=DIR             ps documentation [DOCDIR]

Program names:
  --program-prefix=PREFIX            prepend PREFIX to installed program names
  --program-suffix=SUFFIX            append SUFFIX to installed program names
  --program-transform-name=PROGRAM   run sed PROGRAM on installed program names

System types:
  --build=BUILD     configure for building on BUILD [guessed]
  --host=HOST       cross-compile to build programs to run on HOST [BUILD]

Optional Features:
  --disable-option-checking  ignore unrecognized --enable/--with options
  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
  --enable-silent-rules   less verbose build output (undo: "make V=1")
  --disable-silent-rules  verbose build output (undo: "make V=0")
  --enable-dependency-tracking
                          do not reject slow dependency extractors
  --disable-dependency-tracking
                          speeds up one-time build
  --enable-openbsd-malloc use malloc code from OpenBSD. Linux only.
                          Deprecated: see --with-malloc
  --enable-static-openssl link against a static openssl library. Requires
                          --with-openssl-dir
  --enable-static-libevent
                          link against a static libevent library. Requires
                          --with-libevent-dir
  --enable-static-zlib    link against a static zlib library. Requires
                          --with-zlib-dir
  --enable-static-tor     create an entirely static Tor binary. Requires
                          --with-openssl-dir and --with-libevent-dir and
                          --with-zlib-dir
  --disable-unittests     don't build unit tests for Tor. Risky!
  --enable-coverage       enable coverage support in the unit-test build
  --disable-asserts-in-tests
                          disable tor_assert() calls in the unit tests, for
                          branch coverage
  --disable-system-torrc  don't look for a system-wide torrc file
  --enable-libfuzzer      build extra fuzzers based on 'libfuzzer'
  --enable-oss-fuzz       build extra fuzzers based on 'oss-fuzz' environment
  --disable-memory-sentinels
                          disable code that tries to prevent some kinds of
                          memory access bugs. For fuzzing only.
  --enable-restart-debugging
                          Build Tor with support for debugging in-process
                          restart. Developers only.
  --disable-zstd-advanced-apis
                          Build without support for zstd's "static-only" APIs.
  --enable-nss            Use Mozilla's NSS TLS library. (EXPERIMENTAL)
  --enable-pic            Build Tor's binaries as position-independent code,
                          suitable to link as a library.
  --enable-missing-doc-warnings
                          Tell doxygen to warn about missing documentation.
                          Makes doxygen warnings nonfatal.
  --disable-manpage       Disable manpage generation.
  --disable-html-manual   Disable HTML documentation.
  --disable-asciidoc      don't use asciidoc (disables building of manpages)
  --enable-systemd        enable systemd notification support
  --enable-gcc-warnings   deprecated alias for enable-fatal-warnings
  --enable-fatal-warnings tell the compiler to treat all warnings as errors.
  --disable-gcc-warnings-advisory
                          disable the regular verbose warnings
  --disable-gcc-hardening disable compiler security checks
  --enable-expensive-hardening
                          enable more fragile and expensive compiler
                          hardening; makes Tor slower
  --enable-fragile-hardening
                          enable more fragile and expensive compiler
                          hardening; makes Tor slower
  --enable-all-bugs-are-fatal
                          force all soft asserts in Tor codebase
                          (tor_assert_nonfatal(), BUG(), etc.) to act as hard
                          asserts (tor_assert() and equivalents); makes Tor
                          fragile; only recommended for dev builds
  --disable-linker-hardening
                          disable linker security fixups
  --enable-local-appdata  default to host local application data paths on
                          Windows
  --disable-tool-name-check
                          check for sanely named toolchain when
                          cross-compiling
  --disable-seccomp       do not attempt to use libseccomp
  --disable-libscrypt     do not attempt to use libscrypt
  --enable-tracing-instrumentation-lttng
                          build with LTTng-UST instrumentation
  --enable-tracing-instrumentation-usdt
                          build with tracing USDT instrumentation
  --enable-tracing-instrumentation-log-debug
                          build with tracing event to debug log
  --enable-android        build with Android features enabled
  --disable-module-relay  Build tor without the Relay modules: tor can not run
                          as a relay, bridge, or authority. Implies
                          --disable-module-dirauth
  --disable-module-dirauth
                          Build tor without the Directory Authority module:
                          tor can not run as a directory authority or bridge
                          authority
  --enable-lzma           enable support for the LZMA compression scheme.
  --enable-zstd           enable support for the Zstandard compression scheme.
  --disable-largefile     omit support for large files

Optional Packages:
  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
  --with-tor-user=NAME    specify username for tor daemon
  --with-tor-group=NAME   specify group name for tor daemon
  --with-libevent-dir=PATH
                          specify path to libevent installation
  --with-ssl-dir=PATH     obsolete alias for --with-openssl-dir
  --with-openssl-dir=PATH specify path to openssl installation
  --with-zlib-dir=PATH    specify path to zlib installation
  --with-tcmalloc         use tcmalloc memory allocation library. Deprecated;
                          see --with-malloc
  --with-malloc=system,jemalloc,tcmalloc,openbsd
                          select special malloc implementation [system]
  --with-syslog-facility=LOG
                          syslog facility to use (default=LOG_DAEMON)

Some influential environment variables:
  CC          C compiler command
  CFLAGS      C compiler flags
  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
              nonstandard directory <lib dir>
  LIBS        libraries to pass to the linker, e.g. -l<library>
  CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
              you have headers in a nonstandard directory <include dir>
  PKG_CONFIG  path to pkg-config utility
  PKG_CONFIG_PATH
              directories to add to pkg-config's search path
  PKG_CONFIG_LIBDIR
              path overriding pkg-config's built-in search path
  SYSTEMD_CFLAGS
              C compiler flags for SYSTEMD, overriding pkg-config
  SYSTEMD_LIBS
              linker flags for SYSTEMD, overriding pkg-config
  LIBSYSTEMD209_CFLAGS
              C compiler flags for LIBSYSTEMD209, overriding pkg-config
  LIBSYSTEMD209_LIBS
              linker flags for LIBSYSTEMD209, overriding pkg-config
  CPP         C preprocessor
  PERL        path to Perl binary
  NSS_CFLAGS  C compiler flags for NSS, overriding pkg-config
  NSS_LIBS    linker flags for NSS, overriding pkg-config
  LZMA_CFLAGS C compiler flags for LZMA, overriding pkg-config
  LZMA_LIBS   linker flags for LZMA, overriding pkg-config
  ZSTD_CFLAGS C compiler flags for ZSTD, overriding pkg-config
  ZSTD_LIBS   linker flags for ZSTD, overriding pkg-config
  TCMALLOC_CFLAGS
              C compiler flags for TCMALLOC, overriding pkg-config
  TCMALLOC_LIBS
              linker flags for TCMALLOC, overriding pkg-config
  JEMALLOC_CFLAGS
              C compiler flags for JEMALLOC, overriding pkg-config
  JEMALLOC_LIBS
              linker flags for JEMALLOC, overriding pkg-config

Use these variables to override the choices made by `configure' or to help
it to find libraries and programs with nonstandard names/locations.

Report bugs to the package provider.