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Bug 1880103 - Move dead_strip linker check to moz.configure r=glandium
Differential Revision: https://phabricator.services.mozilla.com/D201724
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@ -436,6 +436,24 @@ def check_and_add_linker_flag(flag, compiler=None, when=None, check=True):
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)
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# Like the compilation checks above, but for linker optimization flags.
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@dependable
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def linker_optimize_flags():
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return namespace(ldflags=[])
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@template
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def check_and_add_linker_optimize_flag(flag, compiler=None, when=None, check=True):
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return check_and_add_flags(
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flag,
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linker_optimize_flags,
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[flag],
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when=when,
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check=check,
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mode="link",
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)
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# Add the given flag to the list of linker flags for the build.
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# - `flag` is the flag (e.g. -fno-sized-deallocation)
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# - `when` (optional) is a @depends function or option name conditioning
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@ -177,6 +177,8 @@ check_and_add_linker_flag("-Wl,-z,relro", when=is_gnu_cc)
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check_and_add_linker_flag("-Wl,-z,now", when=is_gnu_cc)
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check_and_add_linker_flag("-Wl,-z,nocopyreloc", when=is_gnu_cc)
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check_and_add_linker_optimize_flag("-Wl,-dead_strip", when=target_is_darwin & ~dtrace)
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@depends("--enable-address-sanitizer", is_gnu_cc)
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def check_Bsymbolic(enable_asan, is_gnu_cc):
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@ -195,4 +197,7 @@ check_and_add_linker_flag("-Wl,-Bsymbolic", when=check_Bsymbolic)
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add_old_configure_assignment("_COMPILATION_ASFLAGS", asm_flags.asflags)
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add_old_configure_assignment("_COMPILATION_HOST_ASFLAGS", asm_flags.host_asflags)
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add_old_configure_assignment("_COMPILATION_LDFLAGS", linker_flags.ldflags)
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add_old_configure_assignment(
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"_COMPILATION_OPTIMIZE_LDFLAGS", linker_optimize_flags.ldflags
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)
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add_old_configure_assignment("_COMPILATION_HOST_LDFLAGS", linker_flags.host_ldflags)
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@ -3279,3 +3279,16 @@ set_config(
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flags=["-mavx512vnni", "-mavx512bw", "-mavx512f", "-mavx512dq", "-mavx512cd"],
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),
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)
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# dtrace support
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##
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option("--enable-dtrace", help="Build with dtrace support")
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dtrace = check_header(
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"sys/sdt.h",
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when="--enable-dtrace",
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onerror=lambda: die("dtrace enabled but sys/sdt.h not found"),
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)
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set_config("HAVE_DTRACE", True, when=dtrace)
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set_define("INCLUDE_MOZILLA_DTRACE", True, when=dtrace)
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@ -250,30 +250,12 @@ dnl ========================================================
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dnl System overrides of the defaults for target
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dnl ========================================================
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MOZ_OPTIMIZE_LDFLAGS="${_COMPILATION_OPTIMIZE_LDFLAGS} ${MOZ_OPTIMIZE_FLAGS}"
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case "$target" in
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*-darwin*)
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MOZ_OPTIMIZE_FLAGS="-O3"
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DSO_LDOPTS=''
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dnl DTrace and -dead_strip don't interact well. See bug 403132.
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dnl ===================================================================
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if test "x$enable_dtrace" = "xyes"; then
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echo "Skipping -dead_strip because DTrace is enabled. See bug 403132."
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else
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dnl check for the presence of the -dead_strip linker flag
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AC_MSG_CHECKING([for -dead_strip option to ld])
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_SAVE_LDFLAGS=$LDFLAGS
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LDFLAGS="$LDFLAGS -Wl,-dead_strip"
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AC_TRY_LINK(,[return 0;],_HAVE_DEAD_STRIP=1,_HAVE_DEAD_STRIP=)
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if test -n "$_HAVE_DEAD_STRIP" ; then
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AC_MSG_RESULT([yes])
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MOZ_OPTIMIZE_LDFLAGS="-Wl,-dead_strip"
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else
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AC_MSG_RESULT([no])
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fi
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LDFLAGS=$_SAVE_LDFLAGS
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fi
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MOZ_FIX_LINK_PATHS=
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;;
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@ -786,19 +786,6 @@ check_prog(
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paths=clang_search_path,
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)
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option("--enable-dtrace", help="Build with dtrace support")
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dtrace = check_header(
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"sys/sdt.h",
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when="--enable-dtrace",
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onerror=lambda: die("dtrace enabled but sys/sdt.h not found"),
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)
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set_config("HAVE_DTRACE", True, when=dtrace)
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set_define("INCLUDE_MOZILLA_DTRACE", True, when=dtrace)
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add_old_configure_assignment("enable_dtrace", "yes", when=dtrace)
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option("--disable-icf", help="Disable Identical Code Folding")
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add_old_configure_assignment(
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@ -277,31 +277,12 @@ dnl ========================================================
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dnl System overrides of the defaults for target
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dnl ========================================================
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MOZ_OPTIMIZE_LDFLAGS="${_COMPILATION_OPTIMIZE_LDFLAGS} ${MOZ_OPTIMIZE_FLAGS}"
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case "$target" in
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*-darwin*)
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MOZ_OPTIMIZE_FLAGS="-O3"
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DSO_LDOPTS=''
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dnl DTrace and -dead_strip don't interact well. See bug 403132.
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dnl ===================================================================
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if test "x$enable_dtrace" = "xyes"; then
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echo "Skipping -dead_strip because DTrace is enabled. See bug 403132."
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else
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dnl check for the presence of the -dead_strip linker flag
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AC_MSG_CHECKING([for -dead_strip option to ld])
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_SAVE_LDFLAGS=$LDFLAGS
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LDFLAGS="$LDFLAGS -Wl,-dead_strip"
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AC_TRY_LINK(,[return 0;],_HAVE_DEAD_STRIP=1,_HAVE_DEAD_STRIP=)
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if test -n "$_HAVE_DEAD_STRIP" ; then
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AC_MSG_RESULT([yes])
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MOZ_OPTIMIZE_LDFLAGS="-Wl,-dead_strip"
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else
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AC_MSG_RESULT([no])
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fi
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LDFLAGS=$_SAVE_LDFLAGS
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fi
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MOZ_FIX_LINK_PATHS=
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;;
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