47b3508665
Additionally this skipping of the building is reimplemented to be a bit more robust and use the same idioms as the functionality for skipping the tests. In particular, it will now work even if the source files exist, so we can do this during development too.
383 lines
13 KiB
Plaintext
383 lines
13 KiB
Plaintext
AC_INIT([nix],[m4_esyscmd(bash -c "echo -n $(cat ./.version)$VERSION_SUFFIX")])
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AC_CONFIG_MACRO_DIRS([m4])
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AC_CONFIG_SRCDIR(README.md)
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AC_CONFIG_AUX_DIR(config)
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AC_PROG_SED
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# Construct a Nix system name (like "i686-linux"):
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# https://www.gnu.org/software/autoconf/manual/html_node/Canonicalizing.html#index-AC_005fCANONICAL_005fHOST-1
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# The inital value is produced by the `config/config.guess` script:
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# upstream: https://git.savannah.gnu.org/cgit/config.git/tree/config.guess
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# It has the following form, which is not documented anywhere:
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# <cpu>-<vendor>-<os>[<version>][-<abi>]
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# If `./configure` is passed any of the `--host`, `--build`, `--target` options, the value comes from `config/config.sub` instead:
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# upstream: https://git.savannah.gnu.org/cgit/config.git/tree/config.sub
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AC_CANONICAL_HOST
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AC_MSG_CHECKING([for the canonical Nix system name])
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AC_ARG_WITH(system, AS_HELP_STRING([--with-system=SYSTEM],[Platform identifier (e.g., `i686-linux').]),
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[system=$withval],
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[case "$host_cpu" in
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i*86)
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machine_name="i686";;
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amd64)
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machine_name="x86_64";;
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armv6|armv7)
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machine_name="${host_cpu}l";;
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*)
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machine_name="$host_cpu";;
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esac
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case "$host_os" in
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linux-gnu*|linux-musl*)
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# For backward compatibility, strip the `-gnu' part.
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system="$machine_name-linux";;
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*)
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# Strip the version number from names such as `gnu0.3',
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# `darwin10.2.0', etc.
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system="$machine_name-`echo $host_os | "$SED" -e's/@<:@0-9.@:>@*$//g'`";;
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esac])
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AC_MSG_RESULT($system)
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AC_SUBST(system)
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AC_DEFINE_UNQUOTED(SYSTEM, ["$system"], [platform identifier ('cpu-os')])
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# State should be stored in /nix/var, unless the user overrides it explicitly.
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test "$localstatedir" = '${prefix}/var' && localstatedir=/nix/var
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AC_PROG_CC
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AC_PROG_CXX
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AC_PROG_CPP
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AC_CHECK_TOOL([AR], [ar])
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# Use 64-bit file system calls so that we can support files > 2 GiB.
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AC_SYS_LARGEFILE
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# Solaris-specific stuff.
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AC_STRUCT_DIRENT_D_TYPE
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case "$host_os" in
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solaris*)
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# Solaris requires -lsocket -lnsl for network functions
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LDFLAGS="-lsocket -lnsl $LDFLAGS"
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;;
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esac
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# Check for pubsetbuf.
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AC_MSG_CHECKING([for pubsetbuf])
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AC_LANG_PUSH(C++)
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <iostream>
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using namespace std;
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static char buf[1024];]],
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[[cerr.rdbuf()->pubsetbuf(buf, sizeof(buf));]])],
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[AC_MSG_RESULT(yes) AC_DEFINE(HAVE_PUBSETBUF, 1, [Whether pubsetbuf is available.])],
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AC_MSG_RESULT(no))
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AC_LANG_POP(C++)
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AC_CHECK_FUNCS([statvfs pipe2])
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# Check for lutimes, optionally used for changing the mtime of
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# symlinks.
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AC_CHECK_FUNCS([lutimes])
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# Check whether the store optimiser can optimise symlinks.
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AC_MSG_CHECKING([whether it is possible to create a link to a symlink])
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ln -s bla tmp_link
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if ln tmp_link tmp_link2 2> /dev/null; then
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AC_MSG_RESULT(yes)
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AC_DEFINE(CAN_LINK_SYMLINK, 1, [Whether link() works on symlinks.])
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else
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AC_MSG_RESULT(no)
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fi
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rm -f tmp_link tmp_link2
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# Check for <locale>.
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AC_LANG_PUSH(C++)
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AC_CHECK_HEADERS([locale])
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AC_LANG_POP(C++)
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AC_DEFUN([NEED_PROG],
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[
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AC_PATH_PROG($1, $2)
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if test -z "$$1"; then
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AC_MSG_ERROR([$2 is required])
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fi
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])
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NEED_PROG(bash, bash)
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AC_PATH_PROG(flex, flex, false)
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AC_PATH_PROG(bison, bison, false)
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AC_PATH_PROG(dot, dot)
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AC_PATH_PROG(lsof, lsof, lsof)
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NEED_PROG(jq, jq)
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AC_SUBST(coreutils, [$(dirname $(type -p cat))])
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AC_ARG_WITH(store-dir, AS_HELP_STRING([--with-store-dir=PATH],[path of the Nix store (defaults to /nix/store)]),
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storedir=$withval, storedir='/nix/store')
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AC_SUBST(storedir)
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# Look for boost, a required dependency.
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# Note that AX_BOOST_BASE only exports *CPP* BOOST_CPPFLAGS, no CXX flags,
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# and CPPFLAGS are not passed to the C++ compiler automatically.
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# Thus we append the returned CPPFLAGS to the CXXFLAGS here.
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AX_BOOST_BASE([1.66], [CXXFLAGS="$BOOST_CPPFLAGS $CXXFLAGS"], [AC_MSG_ERROR([Nix requires boost.])])
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# For unknown reasons, setting this directly in the ACTION-IF-FOUND above
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# ends up with LDFLAGS being empty, so we set it afterwards.
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LDFLAGS="$BOOST_LDFLAGS $LDFLAGS"
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# On some platforms, new-style atomics need a helper library
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AC_MSG_CHECKING(whether -latomic is needed)
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AC_LINK_IFELSE([AC_LANG_SOURCE([[
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#include <stdint.h>
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uint64_t v;
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int main() {
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return (int)__atomic_load_n(&v, __ATOMIC_ACQUIRE);
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}]])], GCC_ATOMIC_BUILTINS_NEED_LIBATOMIC=no, GCC_ATOMIC_BUILTINS_NEED_LIBATOMIC=yes)
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AC_MSG_RESULT($GCC_ATOMIC_BUILTINS_NEED_LIBATOMIC)
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if test "x$GCC_ATOMIC_BUILTINS_NEED_LIBATOMIC" = xyes; then
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LDFLAGS="-latomic $LDFLAGS"
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fi
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# Running the functional tests without building Nix is useful for testing
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# different pre-built versions of Nix against each other.
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AC_ARG_ENABLE(build, AS_HELP_STRING([--disable-build],[Do not build nix]),
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ENABLE_BUILD=$enableval, ENABLE_BUILD=yes)
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AC_SUBST(ENABLE_BUILD)
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# Building without tests is useful for bootstrapping with a smaller footprint
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# or running the tests in a separate derivation. Otherwise, we do compile and
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# run them.
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AC_ARG_ENABLE(tests, AS_HELP_STRING([--disable-tests],[Do not build the tests]),
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ENABLE_TESTS=$enableval, ENABLE_TESTS=yes)
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AC_SUBST(ENABLE_TESTS)
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# Building without API docs is the default as Nix' C++ interfaces are internal and unstable.
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AC_ARG_ENABLE(internal_api_docs, AS_HELP_STRING([--enable-internal-api-docs],[Build API docs for Nix's internal unstable C++ interfaces]),
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internal_api_docs=$enableval, internal_api_docs=no)
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AC_SUBST(internal_api_docs)
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# LTO is currently broken with clang for unknown reasons; ld segfaults in the llvm plugin
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AC_ARG_ENABLE(lto, AS_HELP_STRING([--enable-lto],[Enable LTO (only supported with GCC) [default=no]]),
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lto=$enableval, lto=no)
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if test "$lto" = yes; then
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if $CXX --version | grep -q GCC; then
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AC_SUBST(CXXLTO, [-flto=jobserver])
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else
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echo "error: LTO is only supported with GCC at the moment" >&2
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exit 1
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fi
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else
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AC_SUBST(CXXLTO, [""])
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fi
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PKG_PROG_PKG_CONFIG
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AC_ARG_ENABLE(shared, AS_HELP_STRING([--enable-shared],[Build shared libraries for Nix [default=yes]]),
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shared=$enableval, shared=yes)
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if test "$shared" = yes; then
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AC_SUBST(BUILD_SHARED_LIBS, 1, [Whether to build shared libraries.])
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else
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AC_SUBST(BUILD_SHARED_LIBS, 0, [Whether to build shared libraries.])
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PKG_CONFIG="$PKG_CONFIG --static"
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fi
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# Look for OpenSSL, a required dependency. FIXME: this is only (maybe)
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# used by S3BinaryCacheStore.
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PKG_CHECK_MODULES([OPENSSL], [libcrypto >= 1.1.1], [CXXFLAGS="$OPENSSL_CFLAGS $CXXFLAGS"])
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# Look for libarchive.
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PKG_CHECK_MODULES([LIBARCHIVE], [libarchive >= 3.1.2], [CXXFLAGS="$LIBARCHIVE_CFLAGS $CXXFLAGS"])
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# Workaround until https://github.com/libarchive/libarchive/issues/1446 is fixed
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if test "$shared" != yes; then
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LIBARCHIVE_LIBS+=' -lz'
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fi
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# Look for SQLite, a required dependency.
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PKG_CHECK_MODULES([SQLITE3], [sqlite3 >= 3.6.19], [CXXFLAGS="$SQLITE3_CFLAGS $CXXFLAGS"])
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# Look for libcurl, a required dependency.
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PKG_CHECK_MODULES([LIBCURL], [libcurl], [CXXFLAGS="$LIBCURL_CFLAGS $CXXFLAGS"])
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# Look for editline, a required dependency.
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# The the libeditline.pc file was added only in libeditline >= 1.15.2,
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# see https://github.com/troglobit/editline/commit/0a8f2ef4203c3a4a4726b9dd1336869cd0da8607,
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# but e.g. Ubuntu 16.04 has an older version, so we fall back to searching for
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# editline.h when the pkg-config approach fails.
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PKG_CHECK_MODULES([EDITLINE], [libeditline], [CXXFLAGS="$EDITLINE_CFLAGS $CXXFLAGS"], [
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AC_CHECK_HEADERS([editline.h], [true],
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[AC_MSG_ERROR([Nix requires libeditline; it was found neither via pkg-config nor its normal header.])])
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AC_SEARCH_LIBS([readline read_history], [editline], [],
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[AC_MSG_ERROR([Nix requires libeditline; it was not found via pkg-config, but via its header, but required functions do not work. Maybe it is too old? >= 1.14 is required.])])
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])
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# Look for libsodium.
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PKG_CHECK_MODULES([SODIUM], [libsodium], [CXXFLAGS="$SODIUM_CFLAGS $CXXFLAGS"])
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# Look for libbrotli{enc,dec}.
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PKG_CHECK_MODULES([LIBBROTLI], [libbrotlienc libbrotlidec], [CXXFLAGS="$LIBBROTLI_CFLAGS $CXXFLAGS"])
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# Look for libcpuid.
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have_libcpuid=
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if test "$machine_name" = "x86_64"; then
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AC_ARG_ENABLE([cpuid],
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AS_HELP_STRING([--disable-cpuid], [Do not determine microarchitecture levels with libcpuid (relevant to x86_64 only)]))
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if test "x$enable_cpuid" != "xno"; then
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PKG_CHECK_MODULES([LIBCPUID], [libcpuid],
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[CXXFLAGS="$LIBCPUID_CFLAGS $CXXFLAGS"
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have_libcpuid=1
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AC_DEFINE([HAVE_LIBCPUID], [1], [Use libcpuid])]
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)
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fi
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fi
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AC_SUBST(HAVE_LIBCPUID, [$have_libcpuid])
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# Look for libseccomp, required for Linux sandboxing.
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case "$host_os" in
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linux*)
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AC_ARG_ENABLE([seccomp-sandboxing],
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AS_HELP_STRING([--disable-seccomp-sandboxing],[Don't build support for seccomp sandboxing (only recommended if your arch doesn't support libseccomp yet!)
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]))
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if test "x$enable_seccomp_sandboxing" != "xno"; then
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PKG_CHECK_MODULES([LIBSECCOMP], [libseccomp],
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[CXXFLAGS="$LIBSECCOMP_CFLAGS $CXXFLAGS"])
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have_seccomp=1
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AC_DEFINE([HAVE_SECCOMP], [1], [Whether seccomp is available and should be used for sandboxing.])
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else
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have_seccomp=
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fi
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;;
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*)
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have_seccomp=
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;;
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esac
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AC_SUBST(HAVE_SECCOMP, [$have_seccomp])
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# Look for aws-cpp-sdk-s3.
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AC_LANG_PUSH(C++)
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AC_CHECK_HEADERS([aws/s3/S3Client.h],
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[AC_DEFINE([ENABLE_S3], [1], [Whether to enable S3 support via aws-sdk-cpp.]) enable_s3=1],
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[AC_DEFINE([ENABLE_S3], [0], [Whether to enable S3 support via aws-sdk-cpp.]) enable_s3=])
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AC_SUBST(ENABLE_S3, [$enable_s3])
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AC_LANG_POP(C++)
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if test -n "$enable_s3"; then
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declare -a aws_version_tokens=($(printf '#include <aws/core/VersionConfig.h>\nAWS_SDK_VERSION_STRING' | $CPP $CPPFLAGS - | grep -v '^#.*' | sed 's/"//g' | tr '.' ' '))
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AC_DEFINE_UNQUOTED([AWS_VERSION_MAJOR], ${aws_version_tokens@<:@0@:>@}, [Major version of aws-sdk-cpp.])
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AC_DEFINE_UNQUOTED([AWS_VERSION_MINOR], ${aws_version_tokens@<:@1@:>@}, [Minor version of aws-sdk-cpp.])
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AC_DEFINE_UNQUOTED([AWS_VERSION_PATCH], ${aws_version_tokens@<:@2@:>@}, [Patch version of aws-sdk-cpp.])
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fi
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# Whether to use the Boehm garbage collector.
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AC_ARG_ENABLE(gc, AS_HELP_STRING([--enable-gc],[enable garbage collection in the Nix expression evaluator (requires Boehm GC) [default=yes]]),
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gc=$enableval, gc=yes)
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if test "$gc" = yes; then
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PKG_CHECK_MODULES([BDW_GC], [bdw-gc])
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CXXFLAGS="$BDW_GC_CFLAGS $CXXFLAGS"
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AC_DEFINE(HAVE_BOEHMGC, 1, [Whether to use the Boehm garbage collector.])
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fi
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if test "$ENABLE_TESTS" = yes; then
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# Look for gtest.
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PKG_CHECK_MODULES([GTEST], [gtest_main])
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# Look for rapidcheck.
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AC_ARG_VAR([RAPIDCHECK_HEADERS], [include path of gtest headers shipped by RAPIDCHECK])
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# No pkg-config yet, https://github.com/emil-e/rapidcheck/issues/302
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AC_LANG_PUSH(C++)
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AC_SUBST(RAPIDCHECK_HEADERS)
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[CXXFLAGS="-I $RAPIDCHECK_HEADERS $CXXFLAGS"]
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[LIBS="-lrapidcheck -lgtest $LIBS"]
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AC_CHECK_HEADERS([rapidcheck/gtest.h], [], [], [#include <gtest/gtest.h>])
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dnl AC_CHECK_LIB doesn't work for C++ libs with mangled symbols
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AC_LINK_IFELSE([
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AC_LANG_PROGRAM([[
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#include <gtest/gtest.h>
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#include <rapidcheck/gtest.h>
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]], [[
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return RUN_ALL_TESTS();
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]])
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],
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[],
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[AC_MSG_ERROR([librapidcheck is not found.])])
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AC_LANG_POP(C++)
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fi
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# Look for nlohmann/json.
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PKG_CHECK_MODULES([NLOHMANN_JSON], [nlohmann_json >= 3.9])
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# documentation generation switch
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AC_ARG_ENABLE(doc-gen, AS_HELP_STRING([--disable-doc-gen],[disable documentation generation]),
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doc_generate=$enableval, doc_generate=yes)
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AC_SUBST(doc_generate)
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# Look for lowdown library.
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PKG_CHECK_MODULES([LOWDOWN], [lowdown >= 0.9.0], [CXXFLAGS="$LOWDOWN_CFLAGS $CXXFLAGS"])
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# Setuid installations.
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AC_CHECK_FUNCS([setresuid setreuid lchown])
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# Nice to have, but not essential.
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AC_CHECK_FUNCS([strsignal posix_fallocate sysconf])
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AC_ARG_WITH(sandbox-shell, AS_HELP_STRING([--with-sandbox-shell=PATH],[path of a statically-linked shell to use as /bin/sh in sandboxes]),
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sandbox_shell=$withval)
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AC_SUBST(sandbox_shell)
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if test ${cross_compiling:-no} = no && ! test -z ${sandbox_shell+x}; then
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AC_MSG_CHECKING([whether sandbox-shell has the standalone feature])
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# busybox shell sometimes allows executing other busybox applets,
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# even if they are not in the path, breaking our sandbox
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if PATH= $sandbox_shell -c "busybox" 2>&1 | grep -qv "not found"; then
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AC_MSG_RESULT(enabled)
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AC_MSG_ERROR([Please disable busybox FEATURE_SH_STANDALONE])
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else
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AC_MSG_RESULT(disabled)
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fi
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fi
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AC_ARG_ENABLE(embedded-sandbox-shell, AS_HELP_STRING([--enable-embedded-sandbox-shell],[include the sandbox shell in the Nix binary [default=no]]),
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embedded_sandbox_shell=$enableval, embedded_sandbox_shell=no)
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AC_SUBST(embedded_sandbox_shell)
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if test "$embedded_sandbox_shell" = yes; then
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AC_DEFINE(HAVE_EMBEDDED_SANDBOX_SHELL, 1, [Include the sandbox shell in the Nix binary.])
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fi
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# Expand all variables in config.status.
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test "$prefix" = NONE && prefix=$ac_default_prefix
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test "$exec_prefix" = NONE && exec_prefix='${prefix}'
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for name in $ac_subst_vars; do
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declare $name="$(eval echo "${!name}")"
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declare $name="$(eval echo "${!name}")"
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declare $name="$(eval echo "${!name}")"
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done
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rm -f Makefile.config
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AC_CONFIG_HEADERS([config.h])
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AC_CONFIG_FILES([])
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AC_OUTPUT
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