return "i386";
} elsif ($mach =~ /^(x86[_-]|amd)64$/) {
return "amd64";
+ } elsif ($mach eq 'powerpc') {
+ return $mach;
} else {
return "unknown ($mach)";
}
UnSet("CPU_BIG_ENDIAN");
Set("CPU_ALLOW_UNALIGNED");
Set("CPU_STRUCT_ALIGN" => 8);
+} elsif ($arch eq "powerpc") {
+ Set("CPU_AMD64");
+ UnSet("CPU_64BIT_POINTERS");
+ UnSet("CPU_LITTLE_ENDIAN");
+ Set("CPU_BIG_ENDIAN");
+ UnSet("CPU_ALLOW_UNALIGNED");
+ Set("CPU_STRUCT_ALIGN" => 4);
} elsif (!Get("CPU_LITTLE_ENDIAN") && !Get("CPU_BIG_ENDIAN")) {
Fail "Architecture not recognized, please set CPU_xxx variables manually.";
}
# Extra flags for compiling and linking shared libraries
Set("CSHARED" => '-fPIC');
-Set("SO_LINK_PATH" => '');
-if (IsSet("CONFIG_LOCAL")) {
- Set("SONAME_PREFIX" => "lib/");
- Append("LOPT" => "-Wl,--rpath-link -Wl,run");
-} else {
- Set("SONAME_PREFIX" => "");
- Append("LOPT" => "-Wl,--rpath-link -Wl,run/lib");
- if (IsSet("CONFIG_SHARED") && !(Get("INSTALL_LIB_DIR") eq "/usr/lib")) {
- Set("SO_LINK_PATH" => "-Wl,--rpath " . Get("INSTALL_LIB_DIR"));
- AtWrite {
- # FIXME: This is a hack. GCC would otherwise fail to link binaries.
- my $libdir = Get("INSTALL_LIB_DIR");
- if (!(-d $libdir)) {
- `install -d -m 755 $libdir`; Fail("Cannot create $libdir") if $?;
- }
- };
- }
+Append("LOPT" => "-Wl,--rpath-link,run/lib -Lrun/lib");
+if (!IsSet("CONFIG_LOCAL")) {
+ # Beware that in non-local builds the INSTALL_LIB_DIR must exist in
+ # standard search paths for shared libraries.
+ Set("SO_LINK_PATH" => '');
+}
+else {
+ # In local builds, we need to link binaries with custom --rpath.
+ # GCC seems to fail when this directory does not exist.
+ Set("SO_LINK_PATH" => "-Wl,--rpath," . Get("INSTALL_LIB_DIR"));
+ AtWrite {
+ my $libdir = Get("INSTALL_LIB_DIR");
+ if (IsSet("CONFIG_SHARED")) {
+ `mkdir -p $libdir`; Fail("Cannot create $libdir") if $?;
+ }
+ };
}
if (IsSet("CONFIG_DARWIN")) {
- Set("LSHARED" => '-dynamiclib -install_name $(SONAME_PREFIX)$(@F)$(SONAME_SUFFIX) -undefined dynamic_lookup');
+ Set("LSHARED" => '-dynamiclib -install_name $(@F)$(SONAME_SUFFIX) -undefined dynamic_lookup');
} else {
- Set("LSHARED" => '-shared -Wl,-soname,$(SONAME_PREFIX)$(@F)$(SONAME_SUFFIX)');
+ Set("LSHARED" => '-shared -Wl,-soname,$(@F)$(SONAME_SUFFIX)');
}
# Extra switches depending on GCC version:
Append("LOPT" => "-s");
}
+# Link-time optimization (experimental)
+# This is currently very inefficient, because we do not attempt to disable
+# optimizations when compiling individual modules. Therefore, we optimize
+# each shared library module twice: when compiling and when linking.
+# Doing it properly would require hacking makefiles.
+if (IsSet("CONFIG_LTO")) {
+ Append("LOPT", "-flto");
+ Append("COPT", "-flto");
+}
+
if (IsSet("CONFIG_DARWIN")) {
# gcc-4.0 on Darwin doesn't set this in the gnu99 mode
Append("CLANG" => "-fnested-functions");