Fail "Don't know how to run on this operating system.";
}
+### Compiler ###
+
+# Default compiler
+Test("CC", "Checking for C compiler", sub { return "gcc"; });
+
+# GCC version
+Test("GCCVER", "Checking for GCC version", sub {
+ my $gcc = Get("CC");
+ my $ver = `$gcc --version | sed '2,\$d; s/^\\(.* \\)\\?\\([0-9]*\\.[0-9]*\\).*/\\2/'`;
+ chomp $ver;
+ Fail "Unable to determine GCC version" if $? || $ver eq "";
+ return $ver;
+});
+my ($gccmaj, $gccmin) = split(/\./, Get("GCCVER"));
+my $gccver = 1000*$gccmaj + $gccmin;
+$gccver >= 3000 or Fail "GCC older than 3.0 doesn't support C99 well enough.";
+
### CPU ###
-Test("CPU_ARCH", "Checking for CPU architecture", sub {
+Test("ARCH", "Checking for machine architecture", sub {
my $mach = `uname -m`;
chomp $mach;
Fail "Unable to determine machine type" if $? || $mach eq "";
if ($mach =~ /^i[0-9]86$/) {
+ return "i386";
+ } elsif ($mach =~ /^(x86[_-]|amd)64$/) {
+ return "amd64";
+ } else {
+ return "unknown";
+ }
+});
+
+Test("CPU_ARCH", "Checking for CPU architecture", sub {
+ my $mach = Get("ARCH");
+ if ($mach eq "i386") {
Set("CPU_I386");
+ UnSet("CPU_64BIT_POINTERS");
+ Set("CPU_LITTLE_ENDIAN");
+ UnSet("CPU_BIG_ENDIAN");
+ Set("CPU_ALLOW_UNALIGNED");
+ Set("CPU_STRUCT_ALIGN" => 4);
my $arch = "";
if (IsSet("CONFIG_EXACT_CPU") && IsSet("CONFIG_LINUX") && open X, "/proc/cpuinfo") {
my %pc = ();
/^([^\t]+)\t+:\s*(.*)$/ and $pc{$1}=$2;
}
close X;
- if ($pc{'vendor_id'} eq "AuthenticAMD" && $pc{'cpu family'} >= 6) {
- $arch = "i686";
+
+ # Try to understand CPU vendor, family and model [inspired by MPlayer's configure script]
+ my $vendor = $pc{'vendor_id'} || "";
+ my $family = $pc{'cpu family'} || 0;
+ my $model = $pc{'model'} || 0;
+ if ($vendor eq "AuthenticAMD") {
+ if ($family >= 6) {
+ if ($model >= 31 && $gccver >= 3004) { $arch = "athlon64"; }
+ elsif ($model >= 6 && $gccver >= 3003) { $arch = "athlon-xp"; }
+ else { $arch = "athlon"; }
+ }
+ } elsif ($vendor eq "GenuineIntel") {
+ # We don't recognize Prescott and Nocona cores yet (gcc-3.4+)
+ if ($family >= 15 && $gccver >= 3003) { $arch = "pentium4"; }
+ elsif ($family >= 6 && $gccver >= 3003) {
+ if ($model >= 7) { $arch = "pentium3"; }
+ elsif ($model >= 3) { $arch = "pentium2"; }
+ }
+ }
+
+ # No match on vendor, try the family
+ if ($arch eq "") {
+ if ($family >= 6) {
+ $arch = "i686";
+ } elsif ($family >= 3) {
+ $arch = "i${family}86";
+ }
}
if ($arch ne "") {
- Log "(according to /proc/cpuinfo) ";
+ Log "(using /proc/cpuinfo) ";
} else {
Log "(don't understand /proc/cpuinfo) ";
}
}
return $arch ? $arch : "i386";
+ } elsif ($mach eq "amd64") {
+ Set("CPU_AMD64");
+ Set("CPU_64BIT_POINTERS");
+ Set("CPU_LITTLE_ENDIAN");
+ UnSet("CPU_BIG_ENDIAN");
+ Set("CPU_ALLOW_UNALIGNED");
+ Set("CPU_STRUCT_ALIGN" => 8);
+ return "x86-64";
} else {
- return "unknown";
+ return undef;
}
});
-if (Get("CPU_ARCH") eq "unknown") { Warn "CPU type not recognized, using defaults, keep fingers crossed."; }
-
-### Compiler and its Options ###
-# Default compiler
-Test("CC", "Checking for C compiler", sub { return "gcc"; });
+if (!IsSet("CPU_ARCH")) { Warn "CPU type not recognized, using defaults, keep fingers crossed."; }
-# GCC version
-Test("GCCVER", "Checking for GCC version", sub {
- my $gcc = Get("CC");
- my $ver = `$gcc --version | sed '2,\$d; s/^\\(.* \\)\\?\\([0-9]*\\.[0-9]*\\).*/\\2/'`;
- chomp $ver;
- Fail "Unable to determine GCC version" if $? || $ver eq "";
- return $ver;
-});
+### Compiler and its Options ###
# C flags: tell the compiler we're speaking C99
Set("CLANG" => "-std=gnu99");
# C optimizations
-Set("COPT" => '-O2 -fstrict-aliasing -march=$(CPU_ARCH)');
+Set("COPT" => '-O2');
Append("COPT", '-march=$(CPU_ARCH)') if IsSet("CPU_ARCH");
# C optimizations for highly exposed code
# Warnings
Set("CWARNS" => '-Wall -W -Wno-parentheses -Wstrict-prototypes -Wmissing-prototypes -Winline');
+Set("CWARNS_OFF" => '');
# Linker flags
Set("LOPT" => "");
Set("LSHARED" => '-shared -Wl,-soname,lib/$(@F)');
# Extra switches depending on GCC version:
-if (Get("GCCVER") eq "3.0") {
-} elsif (Get("GCCVER") eq "3.3") {
+if ($gccver == 3000) {
+ Append("COPT" => "-fstrict-aliasing");
+} elsif ($gccver == 3003) {
Append("CWARNS" => "-Wundef -Wredundant-decls");
Append("COPT" => "-finline-limit=20000 --param max-inline-insns-auto=1000");
-} elsif (Get("GCCVER") eq "3.4") {
+} elsif ($gccver == 3004) {
Append("CWARNS" => "-Wundef -Wredundant-decls");
+ Append("COPT" => "-finline-limit=2000 --param large-function-insns=5000 --param inline-unit-growth=200 --param large-function-growth=400");
+} elsif ($gccver == 4000 || $gccver == 4001) {
+ Append("CWARNS" => "-Wundef -Wredundant-decls -Wno-pointer-sign -Wdisabled-optimization -Wno-missing-field-initializers");
+ Append("CWARNS_OFF" => "-Wno-pointer-sign");
Append("COPT" => "-finline-limit=5000 --param large-function-insns=5000 --param inline-unit-growth=200 --param large-function-growth=400");
} else {
Warn "Don't know anything about this GCC version, using default switches.\n";
Append("LOPT" => "-s");
}
+# Decide how will lib/partmap.c work
+Set("PARTMAP_IS_MMAP") if IsSet("CPU_64BIT_POINTERS");
+
# If debugging memory allocations:
#LIBS+=-lefence
#CDEBUG+=-DDEBUG_DMALLOC
#LIBS+=-ldmalloc
-### CPU Type and Features ###
-
-Set("CPU_LITTLE_ENDIAN");
-#CPU_BIG_ENDIAN=1
-Set("CPU_ALLOW_UNALIGNED");
-Set("CPU_STRUCT_ALIGN" => 4);
-Set("CPU_64BIT_POINTERS");
-
# Return success
1;
projects / libucw.git / blobdiff