mirror of
https://github.com/matrix-construct/construct
synced 2024-12-25 23:14:13 +01:00
configure: Reorg compiler feature flag sections.
This commit is contained in:
Jason Volk
parent
38f6507434
commit
c0f2ff9067
1 changed files with 115 additions and 100 deletions
215
configure.ac
215
configure.ac
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@ -536,49 +536,61 @@ dnl AC_SUBST(EXTRA_LDFLAGS, "$EXTRA_LDFLAGS")
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dnl AC_SUBST(EXTRA_LIBS, "$EXTRA_LIBS")
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dnl
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dnl Gold linker
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dnl Features
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dnl
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dnl Sorry there is no way to disable gold right now. You can try the
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dnl binutils-gold package if your binutils package doesn't ship with it
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dnl by default these days. Not sure if this is a problem with musl; please
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dnl report any issues so we can weigh the need to change course here.
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dnl
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ld_gold="yes"
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AM_CONDITIONAL([LD_GOLD], [[[[ $ld_gold = "yes" ]]]])
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AM_COND_IF([LD_GOLD],
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AM_COND_IF([GCC],
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[
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AM_COND_IF([GCC],
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[
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,-fuse-ld=gold"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--gdb-index"])
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])
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AM_COND_IF([CLANG],
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[
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RB_VAR_PREPEND([LDFLAGS], ["-fuse-ld=gold"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wc,-fuse-ld=gold"])
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])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--warn-common"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--warn-execstack"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--detect-odr-violations"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--rosegment"])
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dnl RB_VAR_PREPEND([LDFLAGS], ["-Wl,--icf=all"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,-z,noexecstack"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,-z,combreloc"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,-z,text-unlikely-segment"])
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], [
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AC_MSG_ERROR([Sorry, disabling the gold linker is not supported at this time.])
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dnl RB_VAR_PREPEND([CXXFLAGS], ["-fmodules-ts"])
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])
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dnl Note compact mode options available in both GOLD and LLD
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AM_COND_IF([COMPACT],
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AM_COND_IF([CLANG],
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[
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--strip-all"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--gc-sections"])
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dnl RB_VAR_PREPEND([CXXFLAGS], ["-fmodules"])
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])
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AM_COND_IF([CLANG],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-fblocks"])
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RB_VAR_PREPEND([CXXFLAGS], ["-fasm-blocks"])
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])
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AM_COND_IF([CLANG11],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-fenable-matrix"])
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])
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dnl
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dnl Misc
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dnl
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dnl This disables thread-safety for static variable initialization
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dnl (specifically local static variables inside functions) which reduces
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dnl generated code size and complexity. This is alright since construct is
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dnl primarily single threaded. Even if other threads are spawned for special
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dnl tasks we consider the likelyhood of a static initialization race to either
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dnl be sufficiently low or simply immaterial for our uses of them.
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dnl
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RB_VAR_PREPEND([CXXFLAGS], ["-fno-threadsafe-statics"])
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dnl Exception safety at instruction boundary rather than function boundary
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dnl This option is needed to enable noexcept(false) i.e to throw from a
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dnl destructor; without this noexcept(false) still terminates.
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RB_VAR_PREPEND([CXXFLAGS], ["-fasynchronous-unwind-tables"])
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dnl -fvisibility-inlines-hidden - for optimization; note the address of inline
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dnl functions won't be the same between translation units
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RB_VAR_PREPEND([CXXFLAGS], ["-fvisibility-inlines-hidden"])
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dnl see gcc(1)
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AM_COND_IF([GCC],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-fnothrow-opt"])
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])
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AM_COND_IF([GCC],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-flax-vector-conversions"])
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])
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dnl
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@ -647,19 +659,6 @@ dnl
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dnl Compiler intrumentation
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dnl
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AM_COND_IF([DEBUG],
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[
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AM_COND_IF([GCC],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-fmax-errors=2"])
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])
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AM_COND_IF([CLANG],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-ferror-limit=2"])
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])
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])
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AM_COND_IF([DEBUG],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-g"])
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@ -680,6 +679,8 @@ AM_COND_IF([DEBUG],
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])
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])
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RB_VAR_PREPEND([CXXFLAGS], ["-fverbose-asm"])
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dnl Creates an ELF section in the output which contains a list of
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dnl the command line arguments used for compilation.
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AM_COND_IF([GCC],
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@ -690,8 +691,27 @@ AM_COND_IF([GCC],
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AM_COND_IF([CLANG],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-grecord-gcc-switches"])
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RB_VAR_PREPEND([CXXFLAGS], ["-fno-discard-value-names"])
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RB_VAR_PREPEND([CXXFLAGS], ["-fident"])
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])
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AM_COND_IF([DEBUG],
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[
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AM_COND_IF([GCC],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-fmax-errors=2"])
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])
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AM_COND_IF([CLANG],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-ferror-limit=2"])
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])
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])
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dnl
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dnl Runtime intrumentation
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dnl
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AM_COND_IF([GCC],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-fstack-protector-explicit"])
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@ -715,56 +735,6 @@ AM_COND_IF([GCC],
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RB_VAR_PREPEND([CXXFLAGS], ["-fvtable-verify=none"])
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])
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dnl Not useful without GCC support...
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dnl AM_COND_IF([CLANG],
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dnl [
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dnl RB_VAR_PREPEND([CXXFLAGS], ["-fasm-blocks"])
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dnl ])
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AM_COND_IF([GCC],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-fverbose-asm"])
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])
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dnl
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dnl Misc
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dnl
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dnl Exception safety at instruction boundary rather than function boundary
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dnl This option is needed to enable noexcept(false) i.e to throw from a
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dnl destructor; without this noexcept(false) still terminates.
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RB_VAR_PREPEND([CXXFLAGS], ["-fasynchronous-unwind-tables"])
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dnl -fvisibility-inlines-hidden - for optimization; note the address of inline
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dnl functions won't be the same between translation units
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RB_VAR_PREPEND([CXXFLAGS], ["-fvisibility-inlines-hidden"])
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dnl see gcc(1)
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AM_COND_IF([GCC],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-fnothrow-opt"])
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])
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dnl This disables thread-safety for static variable initialization
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dnl (specifically local static variables inside functions) which reduces
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dnl generated code size and complexity. This is alright since construct is
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dnl primarily single threaded. Even if other threads are spawned for special
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dnl tasks we consider the likelyhood of a static initialization race to either
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dnl be sufficiently low or simply immaterial for our uses of them.
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dnl
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RB_VAR_PREPEND([CXXFLAGS], ["-fno-threadsafe-statics"])
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AM_COND_IF([GCC],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-flax-vector-conversions"])
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])
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dnl Enables matrix_type attribute for vectors of vectors etc
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AM_COND_IF([CLANG11],
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[
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RB_VAR_PREPEND([CXXFLAGS], ["-fenable-matrix"])
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])
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dnl
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dnl Machine Tuning
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dnl
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@ -943,6 +913,51 @@ RB_VAR_PREPEND([CPPFLAGS], ["$CWARNS"])
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dnl mirror the base CFLAGS and CXXFLAGS up to this point
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CFLAGS="$CXXFLAGS"
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dnl
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dnl Gold linker
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dnl
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dnl Sorry there is no way to disable gold right now. You can try the
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dnl binutils-gold package if your binutils package doesn't ship with it
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dnl by default these days. Not sure if this is a problem with musl; please
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dnl report any issues so we can weigh the need to change course here.
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dnl
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ld_gold="yes"
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AM_CONDITIONAL([LD_GOLD], [[[[ $ld_gold = "yes" ]]]])
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AM_COND_IF([LD_GOLD],
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[
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AM_COND_IF([GCC],
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[
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,-fuse-ld=gold"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--gdb-index"])
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])
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AM_COND_IF([CLANG],
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[
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RB_VAR_PREPEND([LDFLAGS], ["-fuse-ld=gold"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wc,-fuse-ld=gold"])
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])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--warn-common"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--warn-execstack"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--detect-odr-violations"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--rosegment"])
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dnl RB_VAR_PREPEND([LDFLAGS], ["-Wl,--icf=all"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,-z,noexecstack"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,-z,combreloc"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,-z,text-unlikely-segment"])
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], [
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AC_MSG_ERROR([Sorry, disabling the gold linker is not supported at this time.])
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])
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dnl Note compact mode options available in both GOLD and LLD
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AM_COND_IF([COMPACT],
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[
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--strip-all"])
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RB_VAR_PREPEND([LDFLAGS], ["-Wl,--gc-sections"])
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])
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dnl ***************************************************************************
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dnl
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