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configure.ac
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configure.ac
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AC_PREREQ([2.63])
AUTOMAKE_OPTIONS = 1.11
AC_INIT([Construct],[1])
AC_GNU_SOURCE
AC_USE_SYSTEM_EXTENSIONS
AC_CANONICAL_HOST
AC_CANONICAL_BUILD
AC_CANONICAL_TARGET
AC_PREFIX_DEFAULT([/])
AC_CONFIG_MACRO_DIR([tools/m4])
AC_CONFIG_HEADER(include/ircd/config.h)
AC_PATH_PROG(AUTOMAKE, automake)
AC_PATH_PROG(ACLOCAL, aclocal)
AC_PATH_PROG(AUTOHEADER, autoheader)
AC_PATH_PROG(AS, as)
AC_PATH_PROG(RM, rm)
AC_PATH_PROG(CP, cp)
AC_PATH_PROG(MV, mv)
AC_PATH_PROG(LN, ln)
AC_PATH_PROG(LDGOLD, ld.gold)
AC_PATH_PROG(LDLLD, ld.lld)
AC_PATH_PROG(LD, ld.gold)
AC_PATH_PROG(XXD, xxd)
AC_PATH_PROG(TOUCH, touch)
AC_SUBST(CFLAGS, "-pipe $CFLAGS")
AC_SUBST(CXXFLAGS, "-pipe $CXXFLAGS")
AC_SUBST(CCASFLAGS, "$CCASFLAGS")
LT_INIT([dlopen shared disable-static])
LT_LANG([C++])
AM_PROG_AS
AC_PROG_CXX
AC_PROG_CXX_C_O
AC_PROG_LIBTOOL
AC_PROG_MAKE_SET
AC_LANG(C++)
AX_CXX_COMPILE_STDCXX([20], [gnu], [optional], 202002)
AX_CXX_COMPILE_STDCXX([2a], [gnu], [mandatory], 201709)
dnl ***************************************************************************
dnl
dnl Makefile tree
dnl
dnl These (and Makefile.in) are generated from a Makefile.am in the same dir.
dnl
AC_CONFIG_FILES(\
Makefile \
include/ircd/Makefile \
construct/Makefile \
ircd/Makefile \
matrix/Makefile \
modules/Makefile \
share/Makefile \
)
AM_INIT_AUTOMAKE([subdir-objects])
dnl If this is not (un)set, paths are added such as -I../include/ircd to every
dnl build command and that isn't nice because it makes our headers conflict
dnl with standard library/path headers which we don't want or need.
AC_SUBST(DEFAULT_INCLUDES, [])
dnl
dnl Recursive local targets (clean-local is implied)
dnl
#AM_EXTRA_RECURSIVE_TARGETS([
# mrproper
#])
dnl ***************************************************************************
dnl
dnl Platform
dnl
dnl
dnl Hardwares
dnl
AM_CONDITIONAL([AMD64], [[[[ $host_cpu = *x86_64* ]]]])
AM_CONDITIONAL([X86_64], [[[[ $host_cpu = *x86_64* ]]]])
AM_CONDITIONAL([ARM64], [[[[ $host_cpu = *aarch64* ]]]])
AM_CONDITIONAL([AARCH64], [[[[ $host_cpu = *aarch64* ]]]])
dnl
dnl Compiler brand
dnl
AM_CONDITIONAL([GCC], [[[[ $CXX = g\+\+* ]]]])
AM_CONDITIONAL([CLANG], [[[[ $CXX = clang* ]]]])
RB_DEFINE_UNQUOTED([CXX], ["$CXX"], [CXX Compiler])
dnl
dnl Compiler version
dnl
AX_CXX_VERSION
RB_DEFINE_UNQUOTED([CXX_VERSION], ["$CXX_VERSION"], [CXX Compiler Version])
AX_CXX_EPOCH
RB_DEFINE_UNQUOTED([CXX_EPOCH], [$CXX_EPOCH], [CXX Compiler Version (major nr)])
AM_CONDITIONAL([GCC8], [[[[ $CXX = g\+\+* ]] && [[ $CXX_EPOCH -ge 8 ]]]])
AM_CONDITIONAL([GCC9], [[[[ $CXX = g\+\+* ]] && [[ $CXX_EPOCH -ge 9 ]]]])
AM_CONDITIONAL([GCC10], [[[[ $CXX = g\+\+* ]] && [[ $CXX_EPOCH -ge 10 ]]]])
AM_CONDITIONAL([GCC11], [[[[ $CXX = g\+\+* ]] && [[ $CXX_EPOCH -ge 11 ]]]])
AM_CONDITIONAL([GCC12], [[[[ $CXX = g\+\+* ]] && [[ $CXX_EPOCH -ge 12 ]]]])
AM_CONDITIONAL([CLANG8], [[[[ $CXX = clang* ]] && [[ $CXX_EPOCH -ge 8 ]]]])
AM_CONDITIONAL([CLANG9], [[[[ $CXX = clang* ]] && [[ $CXX_EPOCH -ge 9 ]]]])
AM_CONDITIONAL([CLANG10], [[[[ $CXX = clang* ]] && [[ $CXX_EPOCH -ge 10 ]]]])
AM_CONDITIONAL([CLANG11], [[[[ $CXX = clang* ]] && [[ $CXX_EPOCH -ge 11 ]]]])
AM_CONDITIONAL([CLANG12], [[[[ $CXX = clang* ]] && [[ $CXX_EPOCH -ge 12 ]]]])
AM_CONDITIONAL([CLANG13], [[[[ $CXX = clang* ]] && [[ $CXX_EPOCH -ge 13 ]]]])
AM_CONDITIONAL([CLANG14], [[[[ $CXX = clang* ]] && [[ $CXX_EPOCH -ge 14 ]]]])
AM_CONDITIONAL([CLANG15], [[[[ $CXX = clang* ]] && [[ $CXX_EPOCH -ge 15 ]]]])
AM_CONDITIONAL([CLANG16], [[[[ $CXX = clang* ]] && [[ $CXX_EPOCH -ge 16 ]]]])
dnl
dnl Coarse operating system test macros
dnl
AM_CONDITIONAL([LINUX], [[[[ $host_os = *linux* ]]]])
AM_CONDITIONAL([NETBSD], [[[[ $host_os = *netbsd* ]]]])
AM_CONDITIONAL([FREEBSD], [[[[ $host_os = *freebsd* ]]]])
AM_CONDITIONAL([MINGW], [[[[ $host_os = *mingw* ]] || [[ $host_os = *msys* ]]]])
AM_CONDITIONAL([CYGWIN], [[[[ $host_os = *cygwin* ]]]])
AM_CONDITIONAL([INTERIX], [[[[ $host_os = *interix* ]]]])
AM_CONDITIONAL([SOLARIS], [[[[ $host_os = *solaris* ]]]])
RB_DEFINE_UNQUOTED([OS], ["$host_os"], [Host operating system])
dnl
dnl Standard libraries
dnl
AC_SEARCH_LIBS([__dynamic_cast], [c++], [],
[
AC_MSG_ERROR([Please install libstdc++ on this system.])
])
dnl ***************************************************************************
dnl
dnl Developer options
dnl
dnl
dnl Debugging mode
dnl
AC_MSG_CHECKING(whether to enable debugging)
AC_ARG_ENABLE(debug, RB_HELP_STRING([--enable-debug=[[no]]], [Enable debugging suite for development]),
[
debug=$enableval
], [
debug="no"
])
AC_MSG_RESULT([$debug])
AM_CONDITIONAL([DEBUG], [[[[ "$debug" = "yes" ]]]])
AM_COND_IF([DEBUG],
[
AC_SUBST(DEBUG, 1)
RB_DEFINE_UNQUOTED([DEBUG], [1], [Not configured for release when lit.])
RB_DEFINE_UNQUOTED([DEBUG_LEVEL], [1], [Defined to 0 for release; or > 0 otherwise])
], [
RB_DEFINE_UNQUOTED([DEBUG_LEVEL], [0], [Defined to 0 for release; or > 0 otherwise])
])
dnl
dnl Compactness
dnl
AC_MSG_CHECKING(Optimize for size; strip symbols; force no debugging)
AC_ARG_ENABLE(compact, RB_HELP_STRING([--enable-compact], [Optimize for size and compactness]),
[
compact=$enableval
], [
compact="no"
])
AC_MSG_RESULT([$compact])
AM_CONDITIONAL([COMPACT], [[[[ "$compact" = "yes" ]]]])
AM_COND_IF([COMPACT],
[
AC_SUBST(COMPACT, 1)
RB_DEFINE_UNQUOTED([COMPACT], [1], [Not configured for compactness when lit.])
])
dnl
dnl Explicit assert switch for still using assert() without --enable-debug
dnl
AC_MSG_CHECKING(whether to explicitly enable assertions)
AC_ARG_ENABLE(assert, RB_HELP_STRING([--enable-assert], [Enable assertions without --enable-debug]),
[
assert=$enableval
AC_MSG_RESULT([$assert])
], [
AM_COND_IF(DEBUG,
[
assert="yes"
AC_MSG_RESULT([$assert, enabled by default with --enable-debug])
], [
assert="no"
AC_MSG_RESULT([$assert])
])
])
AM_CONDITIONAL([ASSERT], [[[[ "$assert" = "yes" ]]]])
AM_COND_IF(ASSERT,
[
assert_type="abort"
AC_SUBST(ASSERT, 1)
], [
CPPDEFINE([NDEBUG])
])
dnl
dnl Switch to control the action of assert()
dnl
AC_MSG_CHECKING(what the result of a failed assertion implies)
AC_ARG_WITH(assert, RB_HELP_STRING([--with-assert[[[=abort]]]], [Change assertion behavior]),
[
assert_type=$withval
])
AM_COND_IF(ASSERT,
[
AC_MSG_RESULT([$assert_type])
AC_SUBST(ASSERT_TYPE, $assert_type)
if [[ ! -z "$assert_type" ]]; then
if [[ "$assert_type" != "abort" ]]; then
RB_DEFINE_UNQUOTED([ASSERT], ["$assert_type"], [Assertion behavior])
fi
if [[ "$assert_type" == "trap" ]]; then
RB_DEFINE([ASSERT_INTRINSIC], [1], [Intrinsic assertion behavior])
fi
if [[ "$assert_type" == "opt" ]]; then
RB_DEFINE([ASSERT_OPTIMISTIC], [1], [Optimistic assertion behavior])
fi
fi
], [
AC_MSG_RESULT([nothing without assertions enabled])
assert_type=""
])
dnl
dnl Explicit optimize switch for enabling optimization when using --enable-debug
dnl
AC_MSG_CHECKING(whether to explicitly enable optimized build)
AC_ARG_ENABLE(optimize, RB_HELP_STRING([--enable-optimize], [Enable optimization even with --enable-debug]),
[
optimize=$enableval
AC_MSG_RESULT([$optimize])
], [
AM_COND_IF(DEBUG,
[
optimize="no"
AC_MSG_RESULT([$optimize, disabled by default with --enable-debug])
], [
optimize="yes"
AC_MSG_RESULT([$optimize])
])
])
AM_CONDITIONAL([OPTIMIZE], [[[[ "$optimize" = "yes" ]]]])
AM_COND_IF([OPTIMIZE],
[
AC_SUBST(OPTIMIZE, 1)
])
dnl
dnl Enable target clones code generation
dnl
AC_MSG_CHECKING(whether to generate code for target clones)
AC_ARG_ENABLE(clones, RB_HELP_STRING([--enable-clones], [Enable target clones generation]),
[
clones="yes"
], [
clones="no"
])
AC_MSG_RESULT([$clones])
AM_CONDITIONAL([CLONES], [[[[ "$clones" = "yes" ]]]])
AM_COND_IF([CLONES],
[
AC_SUBST(CLONES, 1)
RB_DEFINE([CLONES], [1], [Function multi-versioning for different architectures])
])
dnl
dnl Explicit link-time-optimization switch
dnl
AC_MSG_CHECKING(whether to enable link-time optimization)
AC_ARG_ENABLE(lto, RB_HELP_STRING([--enable-lto], [Enable link-time optimization]),
[
lto=$enableval
], [
lto="yes"
])
if test "$lto" = "yes"; then
AM_COND_IF(OPTIMIZE,
[
AM_COND_IF(CLANG,
[
AS_CASE([$host_cpu],
[aarch64],
[
lto="no"
AC_MSG_RESULT([no, doesn't work on aarch64])
], [
lto="yes"
AC_MSG_RESULT([yes])
])
], [
lto="no"
AC_MSG_RESULT([no, only available with clang])
])
], [
lto="no"
AC_MSG_RESULT([no, optimizations disabled])
])
else
AC_MSG_RESULT([no])
fi
AM_CONDITIONAL([LTO], [[[[ "$lto" = "yes" ]]]])
AM_COND_IF([LTO],
[
AC_SUBST(LTO, 1)
])
dnl
dnl Explicit optimization level switch
dnl
AC_MSG_CHECKING(whether to explicitly set the optimization level)
AC_ARG_WITH(optimize-level, RB_HELP_STRING([--with-optimize-level[[[=3]]]], [Explicitly set the optimize level]),
[
optimize_level=$withval
AC_MSG_RESULT([yes, enabling optimization level -O$optimize_level])
AC_SUBST(OPTMIZE_LEVEL, $optimize_level)
RB_DEFINE_UNQUOTED([OPTIMIZE_LEVEL], [$optimize_level], [User configured optimization level])
], [
AM_COND_IF(OPTIMIZE,
[
AM_COND_IF(COMPACT,
[
optimize_level="s"
AC_MSG_RESULT([no, but --enable-optimize and --enable-compact means -O$optimize_level])
AC_SUBST(OPTIMIZE_LEVEL, $optimize_level)
RB_DEFINE_UNQUOTED([OPTIMIZE_LEVEL], [$optimize_level], [Implicitly set release mode optimization])
], [
optimize_level="3"
AC_MSG_RESULT([no, but --enable-optimize has implied level -O$optimize_level])
AC_SUBST(OPTIMIZE_LEVEL, $optimize_level)
RB_DEFINE_UNQUOTED([OPTIMIZE_LEVEL], [$optimize_level], [Explicitly set release mode optimization])
])
], [
AM_COND_IF(DEBUG,
[
optimize_level="g"
AC_MSG_RESULT([no, but --enable-debug has implied level -O$optimize_level])
AC_SUBST(OPTIMIZE_LEVEL, $optimize_level)
RB_DEFINE_UNQUOTED([OPTIMIZE_LEVEL], ['$optimize_level'], [Debug mode optimization level])
], [
optimize_level="3"
AC_MSG_RESULT([no, but release mode has implied level -O$optimize_level])
AC_SUBST(OPTIMIZE_LEVEL, $optimize_level)
RB_DEFINE_UNQUOTED([OPTIMIZE_LEVEL], [$optimize_level], [Release mode optimization])
])
])
])
dnl
dnl Explicit log level
dnl
dnl NOTE: Log levels here must be manually sync'ed with ircd/logger.h
dnl
AC_MSG_CHECKING(whether to explicitly set the logging level ceiling)
AC_ARG_WITH(log-level, RB_HELP_STRING([--with-log-level[[[=INFO]]]], [Explicitly set the log level ceiling]),
[
AC_MSG_RESULT([yes, enabling log level $withval and below])
level=4
if [[ $withval = "DEBUG" ]]; then
level=7
elif [[ $withval = "DWARNING" ]]; then
level=6
elif [[ $withval = "DERROR" ]]; then
level=5
elif [[ $withval = "INFO" ]]; then
level=4
elif [[ $withval = "NOTICE" ]]; then
level=3
elif [[ $withval = "WARNING" ]]; then
level=2
elif [[ $withval = "ERROR" ]]; then
level=1
elif [[ $withval = "CRITICAL" ]]; then
level=0
elif [[ $withval = "-1" ]]; then
level=-1
fi
AC_SUBST(LOG_LEVEL, $level)
RB_DEFINE_UNQUOTED([LOG_LEVEL], [$level], [Log messages for user configured level and below.])
], [
AM_COND_IF(DEBUG,
[
AC_MSG_RESULT([no, but debug mode enables all log levels through DEBUG])
AC_SUBST(LOG_LEVEL, 7)
RB_DEFINE_UNQUOTED([LOG_LEVEL], [7], [Log message level default for DEBUG mode])
], [
AC_MSG_RESULT([no])
AC_SUBST(LOG_LEVEL, 4)
RB_DEFINE_UNQUOTED([LOG_LEVEL], [4], [Log message level default for release mode])
])
])
dnl
dnl Precompiled headers
dnl
AC_MSG_CHECKING(whether to enable precompiled headers)
AC_ARG_ENABLE(pch, RB_HELP_STRING([--enable-pch], [Enable precompiled header generation]),
[
build_pch=$enableval
], [
build_pch="yes"
])
AC_MSG_RESULT([$build_pch])
AM_CONDITIONAL([BUILD_PCH], [[[[ "$build_pch" = "yes" ]]]])
AM_CONDITIONAL([CLANG_PCH], [[[[ "$build_pch" = "yes" ]] && [[ $CXX = clang* ]]]])
AM_COND_IF([BUILD_PCH],
[
CPPDEFINE([PCH])
])
dnl
dnl Generic Mode compilation
dnl
AC_MSG_CHECKING(whether to enable generic mode or emit for this host)
AC_ARG_ENABLE(generic, RB_HELP_STRING([--enable-generic], [Emit more generic code for pkg binaries]),
[
enable_generic="yes"
], [
enable_generic="no"
])
AC_MSG_RESULT([$enable_generic])
AM_CONDITIONAL([GENERIC], [[[[ "$enable_generic" = "yes" ]]]])
AM_COND_IF([GENERIC],
[
RB_DEFINE([GENERIC], [1], [Building binary tuned for generic architectures])
])
dnl
dnl Tuned compilation
dnl
machine=""
AC_MSG_CHECKING(whether to emit specific architecture features)
AC_ARG_WITH(machine, RB_HELP_STRING([--with-machine], [Emit special feature instructions]),
[
if [[ "$withval" != "yes" ]]; then
machine=$withval
fi
])
if [[ ! -z "$machine" ]]; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
dnl
dnl Disable third-party allocators
dnl
AC_MSG_CHECKING(whether to allow available third-party allocator libraries from being used)
AC_ARG_ENABLE(malloc-libs, RB_HELP_STRING([--enable-malloc-libs], [Enable third-party dynamic memory libraries (jemalloc/tcmalloc/etc)]),
[
use_malloc_libs=$enableval
], [
use_malloc_libs="yes"
])
AC_MSG_RESULT([$use_malloc_libs])
AM_CONDITIONAL([MALLOC_LIBS], [[[[ "$use_malloc_libs" = "yes" ]]]])
dnl
dnl Low memory compilation mode
dnl
AC_ARG_ENABLE(lowmem-compile, RB_HELP_STRING([--enable-lowmem-compile], [Enable low-memory compilation options]),
[
lowmem_compile="yes"
], [
lowmem_compile="no"
])
AC_MSG_RESULT([$lowmem_compile])
AM_CONDITIONAL([LOWMEM_COMPILE], [[[[ $lowmem_compile = "yes" ]]]])
dnl
dnl GCC toolchain selection (for clang)
dnl
AC_MSG_CHECKING(whether to use a specific GCC toolchain)
AC_ARG_WITH(gcc-toolchain, RB_HELP_STRING([--with-gcc-toolchain], [Path to GCC toolchain]),
[
with_gcc_toolchain=$withval
AC_MSG_RESULT([yes, "$with_gcc_toolchain"])
AC_SUBST(GCC_TOOLCHAIN, $with_gcc_toolchain)
AM_COND_IF(CLANG,
[
RB_VAR_PREPEND([CXXFLAGS], ["--gcc-toolchain=$with_gcc_toolchain"])
RB_VAR_PREPEND([LDFLAGS], ["--gcc-toolchain=$with_gcc_toolchain"])
], [
AC_MSG_WARN([--with-gcc-toolchain only applies to clang builds.])
])
], [
AC_MSG_RESULT([no])
])
dnl ***************************************************************************
dnl
dnl Compiler flags
dnl
dnl
dnl Reserved for user
dnl
dnl ex. `make EXTRA_CXXFLAGS="-Weverything" ircd` to append CXXFLAGS
dnl AC_SUBST(EXTRA_CPPFLAGS, "$EXTRA_CPPFLAGS")
dnl AC_SUBST(EXTRA_CFLAGS, "$EXTRA_CFLAGS")
dnl AC_SUBST(EXTRA_CXXFLAGS, "$EXTRA_CXXFLAGS")
dnl AC_SUBST(EXTRA_LDFLAGS, "$EXTRA_LDFLAGS")
dnl AC_SUBST(EXTRA_LIBS, "$EXTRA_LIBS")
dnl
dnl Features
dnl
AM_COND_IF([GCC],
[
dnl RB_VAR_PREPEND([CXXFLAGS], ["-fmodules-ts"])
])
AM_COND_IF([CLANG],
[
dnl RB_VAR_PREPEND([CXXFLAGS], ["-fmodules"])
])
AM_COND_IF([CLANG],
[
RB_VAR_PREPEND([CXXFLAGS], ["-fblocks"])
RB_VAR_PREPEND([CXXFLAGS], ["-fasm-blocks"])
])
AM_COND_IF([CLANG11],
[
RB_VAR_PREPEND([CXXFLAGS], ["-fenable-matrix"])
])
dnl
dnl Misc
dnl
dnl This disables thread-safety for static variable initialization
dnl (specifically local static variables inside functions) which reduces
dnl generated code size and complexity. This is alright since construct is
dnl primarily single threaded. Even if other threads are spawned for special
dnl tasks we consider the likelyhood of a static initialization race to either
dnl be sufficiently low or simply immaterial for our uses of them.
dnl
RB_VAR_PREPEND([CXXFLAGS], ["-fno-threadsafe-statics"])
dnl Exception safety at instruction boundary rather than function boundary
dnl This option is needed to enable noexcept(false) i.e to throw from a
dnl destructor; without this noexcept(false) still terminates.
RB_VAR_PREPEND([CXXFLAGS], ["-fasynchronous-unwind-tables"])
dnl -fvisibility-inlines-hidden - for optimization; note the address of inline
dnl functions won't be the same between translation units
RB_VAR_PREPEND([CXXFLAGS], ["-fvisibility-inlines-hidden"])
dnl see gcc(1)
AM_COND_IF([GCC],
[
RB_VAR_PREPEND([CXXFLAGS], ["-fnothrow-opt"])
])
AM_COND_IF([GCC],
[
RB_VAR_PREPEND([CXXFLAGS], ["-flax-vector-conversions"])
])
dnl
dnl Optimization
dnl
RB_VAR_PREPEND([CXXFLAGS], ["-O$optimize_level"])
AM_COND_IF([OPTIMIZE],
[
optimize="yes"
AM_COND_IF([GCC],
[
RB_VAR_PREPEND([CXXFLAGS], ["-fgcse-sm"])
RB_VAR_PREPEND([CXXFLAGS], ["-fgcse-las"])
RB_VAR_PREPEND([CXXFLAGS], ["-fsched-stalled-insns=0"])
RB_VAR_PREPEND([CXXFLAGS], ["-fsched-pressure"])
RB_VAR_PREPEND([CXXFLAGS], ["-fsched-spec-load"])
dnl RB_VAR_PREPEND([CXXFLAGS], ["-fsched2-use-superblocks"])
dnl RB_VAR_PREPEND([CXXFLAGS], ["-fsched2-use-superblocks"])
RB_VAR_PREPEND([CXXFLAGS], ["-fira-hoist-pressure"])
RB_VAR_PREPEND([CXXFLAGS], ["-fbranch-target-load-optimize"])
RB_VAR_PREPEND([CXXFLAGS], ["-frerun-loop-opt"])
RB_VAR_PREPEND([CXXFLAGS], ["-fdevirtualize-at-ltrans"])
dnl RB_VAR_PREPEND([CXXFLAGS], ["-fbtr-bb-exclusive"])
RB_VAR_PREPEND([CXXFLAGS], ["-fipa-pta"])
RB_VAR_PREPEND([CXXFLAGS], ["-fmodulo-sched"])
RB_VAR_PREPEND([CXXFLAGS], ["-fmodulo-sched-allow-regmoves"])
RB_VAR_PREPEND([CXXFLAGS], ["-ftracer"])
RB_VAR_PREPEND([CXXFLAGS], ["-ftree-loop-im"])
RB_VAR_PREPEND([CXXFLAGS], ["-ftree-switch-conversion"])
])
], [
optimize="no"
dnl Optimization options we enable in non-optimized mode. These will be enabled
dnl in non-optimized mode as well as optimized mode so they are as similar as
dnl possible without impacting debuggability.
RB_VAR_PREPEND([CXXFLAGS], ["-falign-functions"])
dnl RB_VAR_PREPEND([CXXFLAGS], ["-fdata-sections"])
dnl RB_VAR_PREPEND([CXXFLAGS], ["-ffunction-sections"])
RB_VAR_PREPEND([CXXFLAGS], ["-ftree-vectorize"])
AM_COND_IF([GCC],
[
RB_VAR_PREPEND([CXXFLAGS], ["-falign-labels"])
RB_VAR_PREPEND([CXXFLAGS], ["-falign-loops"])
RB_VAR_PREPEND([CXXFLAGS], ["-falign-jumps"])
RB_VAR_PREPEND([CXXFLAGS], ["-ftree-vrp"])
RB_VAR_PREPEND([CXXFLAGS], ["-ftree-dce"])
RB_VAR_PREPEND([CXXFLAGS], ["-ftree-dse"])
RB_VAR_PREPEND([CXXFLAGS], ["-ftree-loop-im"])
RB_VAR_PREPEND([CXXFLAGS], ["-ftree-switch-conversion"])
])
])
AM_COND_IF([CLANG],
[
RB_VAR_PREPEND([CXXFLAGS], ["-fno-data-sections"])
RB_VAR_PREPEND([CXXFLAGS], ["-fno-function-sections"])
])
dnl
dnl Compiler intrumentation
dnl
dnl XXX workaround for valgrind; remove once valgrind is updated
AM_COND_IF([DEBUG],
[
AM_COND_IF([CLANG14],
[
RB_VAR_PREPEND([CXXFLAGS], ["-gdwarf-4"])
])
])
dnl Enable debugging symbols.
AM_COND_IF([DEBUG],
[
RB_VAR_PREPEND([CXXFLAGS], ["-ggdb"])
RB_VAR_PREPEND([CXXFLAGS], ["-g"])
])
AM_COND_IF([DEBUG],
[
AM_COND_IF([GCC],
[
RB_VAR_PREPEND([CXXFLAGS], ["-fvar-tracking-assignments"])
RB_VAR_PREPEND([CXXFLAGS], ["-fvar-tracking"])
])
])
RB_VAR_PREPEND([CXXFLAGS], ["-fverbose-asm"])
dnl Creates an ELF section in the output which contains a list of
dnl the command line arguments used for compilation.
AM_COND_IF([GCC],
[
RB_VAR_PREPEND([CXXFLAGS], ["-frecord-gcc-switches"])
])
AM_COND_IF([CLANG],
[
RB_VAR_PREPEND([CXXFLAGS], ["-grecord-gcc-switches"])
RB_VAR_PREPEND([CXXFLAGS], ["-fno-discard-value-names"])
RB_VAR_PREPEND([CXXFLAGS], ["-fident"])
])
AM_COND_IF([DEBUG],
[
AM_COND_IF([GCC],
[
RB_VAR_PREPEND([CXXFLAGS], ["-fmax-errors=2"])
])
AM_COND_IF([CLANG],
[
RB_VAR_PREPEND([CXXFLAGS], ["-ferror-limit=2"])
])
])
AM_COND_IF([BUILD_PCH],
[
AM_COND_IF([GCC],
[
RB_VAR_PREPEND([CXXFLAGS], ["-fpch-deps"])
])
AM_COND_IF([CLANG],
[
RB_VAR_PREPEND([CPPFLAGS], ["-fpch-preprocess"])
])
AM_COND_IF([CLANG10],
[
RB_VAR_PREPEND([CXXFLAGS], ["-fpch-validate-input-files-content"])
])
])
dnl
dnl Runtime intrumentation
dnl
AM_COND_IF([GCC],
[
RB_VAR_PREPEND([CXXFLAGS], ["-fstack-protector-explicit"])
AS_CASE([$host_cpu],
[x86_64],
[
dnl These flags should not be used on Intel-CET capable platforms
dnl TODO: XXX
AS_IF([test "$CXX_EPOCH" -ge "9"],
[
AM_COND_IF([GENERIC],
[
RB_VAR_PREPEND([CXXFLAGS], ["-fcf-protection=return"])
], [
RB_VAR_PREPEND([CXXFLAGS], ["-fcf-protection=none"])
RB_VAR_PREPEND([CXXFLAGS], ["-mmanual-endbr"])
])
])
])
])
AM_COND_IF([GCC],
[
RB_VAR_PREPEND([CXXFLAGS], ["-fvtable-verify=none"])
])
dnl
dnl Machine Tuning
dnl
MACHINE_FLAGS=""
dnl Initial machine
machine_arch="native"
machine_tune="native"
AM_COND_IF([CLANG],
[
AS_IF([test "$CXX_EPOCH" -lt "15"],
[
AS_IF([test "$host_cpu" = "aarch64"],
[
machine_arch=""
])
])
])
AM_COND_IF([GENERIC],
[
machine_tune="generic"
AS_CASE([$host_cpu],
[x86_64],
[
machine_arch="x86-64"
])
])
dnl Specific extension specification
machine_feat=""
for feature in $machine; do
if [[ $(echo $feature | cut -d"=" -f1) == "arch" ]]; then
machine_arch=$(echo $feature | cut -d"=" -f2)
elif [[ $(echo $feature | cut -d"=" -f1) == "tune" ]]; then
machine_tune=$(echo $feature | cut -d"=" -f2)
else
machine_feat="$feature $machine_feat"
RB_VAR_PREPEND([MACHINE_FLAGS], [-m${feature}])
fi
done
dnl Ensures mtune=generic accompanies one of the generic march= options
dnl even if --enable-generic wasn't given, otherwise gcc will reject.
AM_COND_IF_NOT([GENERIC],
[
AS_CASE([$machine_arch],
[x86-64*],
[
machine_tune="generic"
], [
machine_tune=$machine_arch
])
])
dnl Specific extension underrides
AS_CASE([$host_cpu],
[x86_64],
[
dnl AMD K10's SSE4a doesn't work with valgrind
RB_VAR_PREPEND([MACHINE_FLAGS], [-mno-sse4a])
])
if [[ ! -z "$machine_tune" ]]; then
RB_VAR_PREPEND([MACHINE_FLAGS], [-mtune=$machine_tune])
fi
if [[ ! -z "$machine_arch" ]]; then
RB_VAR_PREPEND([MACHINE_FLAGS], [-march=$machine_arch])
fi
machine_tuning="${host_cpu} arch=$machine_arch tune=$machine_tune :$machine_feat"
RB_VAR_PREPEND([CXXFLAGS], [$MACHINE_FLAGS])
dnl Get the target features for this build from gcc into a readable string
AM_COND_IF([GCC],
[
_cxx=$(echo "${CXX}" | cut -d' ' -f1)
_cmd="${_cxx} -Q --help=target ${MACHINE_FLAGS}"
machine_features=$(${_cmd} | grep enabled | grep -v 'mno-')
machine_features=$(printf "\n${machine_features}")
])
dnl Get the target features for this build from clang into a readable string
AM_COND_IF([CLANG],
[
_flag=0
_cxx=$(echo "${CXX}" | cut -d' ' -f1)
_str=$(${_cxx} -E ${MACHINE_FLAGS} - -### 2>&1)
machine_features=""
for i in $_str; do
if [[ $i == '"-target-feature"' ]]; then
_flag=1
elif [[ $_flag == 1 ]]; then
_flag=0
attr=$(echo $i | sed -e 's/^"//' -e 's/"$//')
if [[ ${attr:0:1} == '+' ]]; then
machine_features="${machine_features}${attr} "
fi
fi
done
])
dnl
dnl Compiler warnings
dnl
AC_MSG_CHECKING(whether to enable warnings)
AC_ARG_ENABLE(warnings,
RB_HELP_STRING([--enable-warnings], [Disable all sorts of warnings like a rockstar]),
[
warnings=$enableval
], [
warnings="yes"
])
AC_MSG_RESULT([$warnings])
AM_CONDITIONAL([WARNINGS], [[[[ "$warnings" = "yes" ]]]])
AC_DEFUN([RB_MAYBE_CWARN],
[
AM_COND_IF([WARNINGS],
[
RB_MAYBE_CXXFLAG([$1], [$2])
])
])
STACK_USAGE_WARNING=16384
FRAME_SIZE_WARNING=8192
CWARNS=""
dnl Compatible warnings
RB_MAYBE_CWARN([-Wall], charybdis_cv_c_gcc_w_all)
RB_MAYBE_CWARN([-Wextra], charybdis_cv_c_gcc_w_extra)
RB_MAYBE_CWARN([-Wpointer-arith], charybdis_cv_c_gcc_w_pointer_arith)
RB_MAYBE_CWARN([-Wcast-align], charybdis_cv_c_gcc_w_cast_align)
RB_MAYBE_CWARN([-Wcast-qual], charybdis_cv_c_gcc_w_cast_qual)
RB_MAYBE_CWARN([-Wfloat-equal], charybdis_cv_c_gcc_w_float_equal)
RB_MAYBE_CWARN([-Wwrite-strings], charybdis_cv_c_gcc_w_write_strings)
RB_MAYBE_CWARN([-Wparentheses], charybdis_cv_c_gcc_parentheses)
RB_MAYBE_CWARN([-Wundef], charybdis_cv_c_gcc_w_undef)
RB_MAYBE_CWARN([-Wpacked], charybdis_cv_c_gcc_w_packed)
RB_MAYBE_CWARN([-Wformat -Wformat-y2k -Wformat-nonliteral], charybdis_cv_c_gcc_w_format)
RB_MAYBE_CWARN([-Wstrict-aliasing=2 -Wstrict-overflow=5], charybdis_cv_c_gcc_w_strict)
RB_MAYBE_CWARN([-Wdisabled-optimization], charybdis_cv_c_gcc_w_disabled_optimization)
RB_MAYBE_CWARN([-Winvalid-pch], charybdis_cv_c_gcc_w_invalid_pch)
RB_MAYBE_CWARN([-Winit-self], charybdis_cv_c_gcc_w_init_self)
RB_MAYBE_CWARN([-Wunreachable-code], charybdis_cv_c_gcc_w_unreachable_code)
RB_MAYBE_CWARN([-Wno-overloaded-virtual], charybdis_cv_c_gcc_w_overloaded_virtual)
RB_MAYBE_CWARN([-Wnon-virtual-dtor], charybdis_cv_c_gcc_w_non_virtual_dtor)
RB_MAYBE_CWARN([-Wsized-deallocation], charybdis_cv_c_gcc_w_sized_deallocation)
RB_MAYBE_CWARN([-Wctor-dtor-privacy], charybdis_cv_c_gcc_w_ctor_dtor_privacy)
RB_MAYBE_CWARN([-Wsign-promo], charybdis_cv_c_gcc_w_sign_promo)
RB_MAYBE_CWARN([-Wtrampolines], charybdis_cv_c_gcc_w_trampolines)
RB_MAYBE_CWARN([-Wduplicated-cond], charybdis_cv_c_gcc_w_duplicated_cond)
RB_MAYBE_CWARN([-Wduplicate-branches], charybdis_cv_c_gcc_w_duplicate_branches)
RB_MAYBE_CWARN([-Wrestrict], charybdis_cv_c_gcc_w_restrict)
RB_MAYBE_CWARN([-Wnull-dereference], charybdis_cv_c_gcc_w_null_dereference)
RB_MAYBE_CWARN([-Wplacement-new=2], charybdis_cv_c_gcc_w_placement_new)
RB_MAYBE_CWARN([-Wundef], charybdis_cv_c_gcc_w_undef)
RB_MAYBE_CWARN([-Wodr], charybdis_cv_c_gcc_w_odr)
RB_MAYBE_CWARN([-Wimplicit-fallthrough], charybdis_cv_c_gcc_w_implicit_fallthrough)
RB_MAYBE_CWARN([-Werror=return-type], charybdis_cv_c_gcc_w_error_return_type)
RB_MAYBE_CWARN([-Werror=reorder], charybdis_cv_c_gcc_w_error_reorder)
dnl Compiler specific
AM_COND_IF([GCC],
[
RB_MAYBE_CWARN([-Werror=return-local-addr], charybdis_cv_c_gcc_w_error_return_local_addr)
RB_MAYBE_CWARN([-Wlogical-op], charybdis_cv_c_gcc_w_logical_op)
RB_MAYBE_CWARN([-Wformat-security], charybdis_cv_c_gcc_w_format_security)
RB_MAYBE_CWARN([-Wstack-usage=$STACK_USAGE_WARNING], charybdis_cv_c_gcc_w_stack_usage)
RB_MAYBE_CWARN([-Wframe-larger-than=$FRAME_SIZE_WARNING], charybdis_cv_c_gcc_w_frame_larger_than)
RB_MAYBE_CWARN([-Walloca], charybdis_cv_c_gcc_w_alloca)
RB_MAYBE_CWARN([-Wvector-operation-performance], charybdis_cv_c_gcc_w_vector_operation_performance)
RB_MAYBE_CWARN([-Wstringop-overflow=4], charybdis_cv_c_gcc_w_stringop_overflow)
])
dnl Compiler specific
AM_COND_IF([CLANG],
[
RB_MAYBE_CWARN([-Werror=return-stack-address], charybdis_cv_c_gcc_w_error_return_stack_address)
RB_MAYBE_CWARN([-Werror=abstract-final-class], charybdis_cv_c_gcc_w_error_abstract_final_class)
RB_MAYBE_CWARN([-Wundefined-reinterpret-cast], charybdis_cv_c_gcc_w_undefined_reinterpret_cast)
RB_MAYBE_CWARN([-Wconditional-uninitialized], charybdis_cv_c_gcc_w_conditional_uninitialized)
RB_MAYBE_CWARN([-Wno-mismatched-tags], charybdis_cv_c_gcc_w_mismatched_tags)
RB_MAYBE_CWARN([-Wno-format-security], charybdis_cv_c_gcc_w_format_security)
RB_MAYBE_CWARN([-Wno-unknown-warning-option], charybdis_cv_c_gcc_w_unknown_warning_option)
RB_MAYBE_CWARN([-Wno-profile-instr-unprofiled], charybdis_cv_c_gcc_w_profile_instr_unprofiled)
])