mirror of
https://github.com/netwide-assembler/nasm.git
synced 2024-12-21 09:19:31 +08:00
5b4de52083
Set an expression descent limit to 8192, which is more reasonable to expect to work on most platforms. Furthermore, if getrlimit() exists, then try to use it to see if we need to further limit the size. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
380 lines
11 KiB
Plaintext
380 lines
11 KiB
Plaintext
dnl Process this file with autoconf 2.69 or later to produce
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dnl a configure script.
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AC_PREREQ(2.69)
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AC_INIT([config/config.h.in])
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AC_CONFIG_HEADERS([config/config.h])
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AC_PREFIX_PROGRAM(nasm)
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AC_CONFIG_AUX_DIR(autoconf/helpers)
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dnl Save initial CFLAGS, to see if -g -O2 came from configure or not
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pa_init_cflags="$CFLAGS"
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dnl This prevents us from running Wine and thinking we are not
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dnl cross-compiling when in fact we are; running Wine here is at
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dnl the best very slow and doesn't buy us a single thing at all.
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WINELOADER=/dev/null
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export WINELOADER
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dnl Get the canonical target system name
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AC_CANONICAL_HOST
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dnl Checks for programs and enable necessary CC extensions
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AC_USE_SYSTEM_EXTENSIONS
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AC_SYS_LARGEFILE
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AC_PROG_CC
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AC_PROG_CC_STDC
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AC_PROG_LN_S
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AC_PROG_MAKE_SET
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AC_PROG_INSTALL
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AC_PROG_MKDIR_P
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pa_no_optimize=false
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dnl If the user did not specify a CFLAGS default, change default
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dnl to -O0 for debugging
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PA_ARG_DISABLED([optimization],
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[compile without optimization (-O0) to help debugging],
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[pa_no_optimize=true])
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dnl Compile and link with dwarf debug
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PA_ARG_ENABLED([gdb],
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[disable optimization and compile with extra debug information for GDB debugger],
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[PA_ADD_CFLAGS([-ggdb3])
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pa_no_optimize=true])
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AS_IF([$pa_no_optimize],
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[PA_ADD_CFLAGS([-O0])
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PA_ADD_CFLAGS([-fno-omit-frame-pointer])])
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dnl Profiling
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PA_ARG_ENABLED([profiling],
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[compile with profiling (-pg option)],
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[PA_ADD_CFLAGS([-pg])])
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dnl Abort on panic
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PA_ARG_ENABLED([panic-abort],
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[call abort() on panic to trap in the debugger],
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[AC_DEFINE(ABORT_ON_PANIC)])
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AH_TEMPLATE(ABORT_ON_PANIC,
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[Define to 1 to call abort() on panics (internal errors), for debugging.])
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dnl Check for library extension
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PA_LIBEXT
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dnl Checks for typedefs, structures, and compiler characteristics.
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AC_C_CONST
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AC_C_INLINE
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AC_C_RESTRICT
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AC_TYPE_SIZE_T
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AC_C_BIGENDIAN(AC_DEFINE(WORDS_BIGENDIAN),AC_DEFINE(WORDS_LITTLEENDIAN),,)
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AH_TEMPLATE(WORDS_BIGENDIAN,
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[Define to 1 if your processor stores words with the most significant
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byte first (like Motorola and SPARC, unlike Intel and VAX).])
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AH_TEMPLATE(WORDS_LITTLEENDIAN,
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[Define to 1 if your processor stores words with the least significant
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byte first (like Intel and VAX, unlike Motorola and SPARC).])
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dnl Force gcc and gcc-compatible compilers treat signed integers
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dnl as 2's complement
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PA_ADD_CFLAGS([-fwrapv])
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dnl Some environments abuse __STRICT_ANSI__ to disable some
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dnl function declarations
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PA_ADD_CFLAGS([-U__STRICT_ANSI__])
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dnl Don't put things in common if we can avoid it. We don't want to
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dnl assume all compilers support common, and this will help find those
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dnl problems. This also works around an OSX linker problem.
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PA_ADD_CFLAGS([-fno-common])
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dnl Look for programs...
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AC_CHECK_PROGS(NROFF, nroff, false)
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AC_CHECK_PROGS(ASCIIDOC, asciidoc, false)
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AC_CHECK_PROGS(XMLTO, xmlto, false)
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AC_CHECK_PROGS(XZ, xz, false)
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dnl Check for progs needed for manpage generation
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MANPAGES=manpages
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AS_IF([test x$ASCIIDOC = xfalse],
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[AC_MSG_WARN([No asciidoc package found, cannot build man pages])
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MANPAGES='']
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)
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AS_IF([test x"$XMLTO" = xfalse],
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[AC_MSG_WARN([No xmlto package found, cannot build man pages])
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MANPAGES='']
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)
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AC_SUBST([MANPAGES])
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dnl Don't create .pdf.xz if there is no xz
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AS_IF([test x"$XZ" = xfalse],
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[],
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[XZFILES=xzfiles])
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AC_SUBST([XZFILES])
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dnl Can't create NSIS package if there is no makensis
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dnl ... but it only applies to a Windows target ...
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dnl Note: AC_CHECK_TOOLS is supposed to check for the "plain"
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dnl version of the program name, but it doesn't seem to.
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AC_ARG_WITH([nsis],
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[AS_HELP_STRING([[--with-nsis[=makensis]]],
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[build an install .exe using NSIS on Windows hosts])],
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[], [with_nsis=yes])
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AS_IF([test x"$MAKENSIS" = x], [],
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[AS_IF([test x"$with_nsis" = xno], []
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[with_nsis="$MAKENSIS"])])
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MAKENSIS=false
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AS_CASE([$host],
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[*-win* | *-mingw*],
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[AS_IF([test x"$with_nsis" = xno], [],
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[NSIS=nsis
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AS_IF([test x"$with_nsis" = xyes],
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[AC_CHECK_TOOL(MAKENSIS_TOOL, makensis, false)
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MAKENSIS="$MAKENSIS_TOOL"
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AS_IF([test x"$MAKENSIS" = xfalse],
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[AC_CHECK_PROGS(MAKENSIS_PLAIN, makensis, false)
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MAKENSIS="$MAKENSIS_PLAIN"])
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AS_IF([test x"$MAKENSIS" = xfalse],
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[AC_MSG_WARN([no makensis found, cannot build installer])
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NSIS=''])],
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[MAKENSIS="$with_nsis"])])])
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AC_SUBST([MAKENSIS])
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AC_SUBST([NSIS])
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dnl Check for host compiler tools
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AC_CHECK_TOOL(AR, ar)
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AC_CHECK_TOOL(RANLIB, ranlib, :)
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AC_CHECK_TOOL(STRIP, strip)
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dnl Checks for header files.
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AC_HEADER_STDC
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AC_CHECK_HEADERS(inttypes.h)
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AC_CHECK_HEADERS(strings.h)
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AC_HEADER_STDBOOL
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AC_CHECK_HEADERS(stdnoreturn.h)
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AC_CHECK_HEADERS(io.h)
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AC_CHECK_HEADERS(fcntl.h)
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AC_CHECK_HEADERS(unistd.h)
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AC_CHECK_HEADERS(sys/mman.h)
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AC_CHECK_HEADERS(sys/types.h)
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AC_CHECK_HEADERS(sys/stat.h)
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AC_CHECK_HEADERS(sys/resource.h)
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dnl Checks for library functions.
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AC_CHECK_FUNCS(strcasecmp stricmp)
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AC_CHECK_FUNCS(strncasecmp strnicmp)
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AC_CHECK_FUNCS(strsep)
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AC_CHECK_FUNCS(strnlen)
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AC_CHECK_FUNCS(strrchrnul)
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AC_CHECK_FUNCS(iscntrl)
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AC_CHECK_FUNCS(isascii)
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AC_CHECK_FUNCS(mempcpy)
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AC_CHECK_FUNCS(getuid)
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AC_CHECK_FUNCS(getgid)
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AC_CHECK_FUNCS(getrlimit)
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AC_CHECK_FUNCS(realpath)
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AC_CHECK_FUNCS(canonicalize_file_name)
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AC_CHECK_FUNCS(_fullpath)
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AC_CHECK_FUNCS(pathconf)
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AC_FUNC_FSEEKO
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AC_CHECK_FUNCS([_fseeki64])
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AC_CHECK_FUNCS([ftruncate _chsize _chsize_s])
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AC_CHECK_FUNCS([fileno _fileno])
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AC_FUNC_MMAP
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AC_CHECK_FUNCS(getpagesize)
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AC_CHECK_FUNCS(sysconf)
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AC_CHECK_FUNCS([access _access faccessat])
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PA_HAVE_FUNC(__builtin_expect, (1,1))
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dnl ilog2() building blocks
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PA_ADD_HEADERS(intrin.h)
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PA_HAVE_FUNC(__builtin_clz, (0U))
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PA_HAVE_FUNC(__builtin_clzl, (0UL))
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PA_HAVE_FUNC(__builtin_clzll, (0ULL))
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PA_HAVE_FUNC(_BitScanReverse, (0))
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PA_HAVE_FUNC(_BitScanReverse64, (0))
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dnl Functions for which we have replacements available in stdlib/
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AC_CHECK_FUNCS([vsnprintf _vsnprintf])
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AC_CHECK_FUNCS([snprintf _snprintf])
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AC_CHECK_FUNCS([strlcpy])
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AC_CHECK_FUNCS([strrchrnul])
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dnl These types are POSIX-specific, and Windows does it differently...
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AC_CHECK_TYPES([struct _stati64])
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AC_CHECK_TYPES([struct stat])
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AC_CHECK_FUNCS([stat _stati64])
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AC_CHECK_FUNCS([fstat _fstati64])
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AC_CHECK_FUNCS([S_ISREG])
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dnl Check for functions that might not be declared in the headers for
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dnl various idiotic reasons (mostly because of library authors
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dnl abusing the meaning of __STRICT_ANSI__)
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AC_CHECK_DECLS(strcasecmp)
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AC_CHECK_DECLS(stricmp)
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AC_CHECK_DECLS(strncasecmp)
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AC_CHECK_DECLS(strnicmp)
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AC_CHECK_DECLS(strsep)
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AC_CHECK_DECLS(strlcpy)
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AC_CHECK_DECLS(strnlen)
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AC_CHECK_DECLS(strrchrnul)
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dnl Check for missing types
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AC_TYPE_UINTPTR_T
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dnl Documentation: should we generate an uncompressed PDF? It is
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dnl about twice as big, but it can be externally compressed (e.g. with xz)
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dnl and becomes significantly smaller than the original.
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PA_ARG_DISABLED([pdf-compression],
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[generate an uncompressed documentation PDF],
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[PDFOPT='-nocompress'])
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AC_SUBST([PDFOPT])
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dnl
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dnl Look for byte-swapping support...
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dnl
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PA_ADD_HEADERS(endian.h sys/endian.h machine/endian.h)
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PA_HAVE_FUNC(cpu_to_le16, (0))
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PA_HAVE_FUNC(cpu_to_le32, (0))
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PA_HAVE_FUNC(cpu_to_le64, (0))
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PA_HAVE_FUNC(__cpu_to_le16, (0))
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PA_HAVE_FUNC(__cpu_to_le32, (0))
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PA_HAVE_FUNC(__cpu_to_le64, (0))
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PA_HAVE_FUNC(htole16, (0))
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PA_HAVE_FUNC(htole32, (0))
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PA_HAVE_FUNC(htole64, (0))
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PA_HAVE_FUNC(__bswap_16, (0))
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PA_HAVE_FUNC(__bswap_32, (0))
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PA_HAVE_FUNC(__bswap_64, (0))
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PA_HAVE_FUNC(__builtin_bswap16, (0))
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PA_HAVE_FUNC(__builtin_bswap32, (0))
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PA_HAVE_FUNC(__builtin_bswap64, (0))
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PA_HAVE_FUNC(_byteswap_ushort, (0))
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PA_HAVE_FUNC(_byteswap_ulong, (0))
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PA_HAVE_FUNC(_byteswap_uint64, (0))
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dnl
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dnl Some rather useful gcc extensions...
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dnl
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PA_HAVE_FUNC(__builtin_constant_p, (0))
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PA_HAVE_FUNC(__builtin_choose_expr, (0,1,2))
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dnl
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dnl Check for supported gcc attributes; some compilers (e.g. Sun CC)
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dnl support these, but don't define __GNUC__ as they don't support
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dnl some other features of gcc.
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dnl
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PA_ADD_CFLAGS([-Werror=attributes])
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PA_FUNC_ATTRIBUTE(noreturn)
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PA_FUNC_ATTRIBUTE(returns_nonnull,,,,,never_null)
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PA_FUNC_ATTRIBUTE(malloc)
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PA_FUNC_ATTRIBUTE(alloc_size,[1])
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PA_FUNC_ATTRIBUTE(alloc_size,[1,2])
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PA_FUNC_ATTRIBUTE(sentinel,,, [const char *, ...], ["a","b",NULL],end_with_null)
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PA_FUNC_ATTRIBUTE(format, [printf,1,2], int, [const char *, ...], ["%d",1])
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PA_FUNC_ATTRIBUTE(const)
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PA_FUNC_ATTRIBUTE(pure)
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PA_FUNC_ATTRIBUTE(cold,,,,,unlikely_func)
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PA_FUNC_ATTRIBUTE_ERROR
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dnl
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dnl support function sections (if available)
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dnl
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PA_ARG_DISABLED([sections],
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[do not try to compile with function/data section support],
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[],
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[PA_ADD_CFLAGS([-ffunction-sections])
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PA_ADD_CFLAGS([-fdata-sections])
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PA_ADD_LDFLAGS([-Wl,--gc-sections])]
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)
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dnl
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dnl support LTO
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dnl
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PA_ARG_ENABLED([lto],
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[compile with gcc-style link time optimization],
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[PA_ADD_CFLAGS([-flto])
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dnl Note: we use _PROG rather than _TOOL since we are prepending the full
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dnl CC name which ought to already contain the host triplet if needed
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ccbase=`echo "$CC" | awk '{ print $1; }'`
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AC_CHECK_PROGS(CC_AR, [${ccbase}-ar], [$ac_cv_prog_AR])
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AR="$CC_AR"
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AC_CHECK_PROGS(CC_RANLIB, [${ccbase}-ranlib], [$ac_cv_prog_RANLIB])
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RANLIB="$CC_RANLIB"], [])
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dnl
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dnl support sanitizers (if available)
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dnl
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PA_ARG_ENABLED([sanitizer],
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[compile with sanitizers enabled],
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[PA_ADD_CFLAGS([-fno-omit-frame-pointer])
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PA_ADD_CFLAGS([-fsanitize=address])
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PA_ADD_CFLAGS([-fsanitize=undefined])])
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dnl
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dnl Don't make symbols visible, there is no point and it just
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dnl makes the code slower.
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dnl
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PA_ADD_CFLAGS([-fvisibility=hidden])
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dnl If we have gcc, add appropriate code cleanliness options
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PA_ADD_CFLAGS([-Wall])
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PA_ARG_DISABLED([pedantic],
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[disable some extra paranoid compiler warnings],
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[],
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[PA_ADD_CFLAGS([-W])
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PA_ADD_CFLAGS([-pedantic])
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PA_ADD_CFLAGS([-Wc90-c99-compat])])
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dnl LLVM doesn't error out on invalid -W options unless this option is
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dnl specified first. Enable this so this script can actually discover
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dnl which -W options are possible for this compiler.
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PA_ADD_CFLAGS([-Werror=unknown-warning-option])
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dnl Suppress format warning on Windows targets due to their <inttypes.h>
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PA_ADD_CFLAGS([-Wpedantic-ms-format],[-Wno-pedantic-ms-format])
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PA_ADD_CFLAGS([-Wlong-long],[-Wno-long-long])
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dnl This is needed because we intentionally expect strncpy() to fill
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dnl in a zero-padded (not zero-terminated) buffer in several backends
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PA_ADD_CFLAGS([-Wstringop-truncation],[-Wno-stringop-truncation])
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dnl This is needed because we assume 2's-completement signed arithmetic;
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dnl on compilers with gcc-like command line syntax we pass the -fwrapv
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dnl option for exactly that reason.
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PA_ADD_CFLAGS([-Wshift-negative-value],[-Wno-shift-negative-value])
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dnl PA_ADD_CFLAGS([-Wwrite-strings])
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PA_ARG_ENABLED([werror],
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[compile with -Werror to error out on any warning],
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[PA_ADD_CFLAGS([-Werror])],
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[PA_ADD_CFLAGS([-Werror=implicit])
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PA_ADD_CFLAGS([-Werror=missing-braces])
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PA_ADD_CFLAGS([-Werror=return-type])
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PA_ADD_CFLAGS([-Werror=trigraphs])
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PA_ADD_CFLAGS([-Werror=pointer-arith])
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PA_ADD_CFLAGS([-Werror=strict-prototypes])
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PA_ADD_CFLAGS([-Werror=missing-prototypes])
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PA_ADD_CFLAGS([-Werror=missing-declarations])
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PA_ADD_CFLAGS([-Werror=comment])
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PA_ADD_CFLAGS([-Werror=vla])]
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)
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dnl
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dnl On some versions of gcc, -Werror=missing-prototypes causes problems
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dnl with C99-style external inlines. Test this *after* adding the -Werror
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dnl options.
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dnl
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PA_CHECK_BAD_STDC_INLINE
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dnl
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dnl support ccache
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dnl
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PA_ARG_ENABLED([ccache], [compile with ccache], [CC="ccache $CC"], [])
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AC_CONFIG_FILES([Makefile doc/Makefile])
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AC_OUTPUT
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