# Automatic configuration of the UCW Library
# (c) 2005 Martin Mares <mj@ucw.cz>
-### Compiler and its Options ###
+### OS ###
+
+Test("OS", "Checking on which OS we run", sub {
+ my $os = `uname`;
+ chomp $os;
+ Fail "Unable to determine OS type" if $? || $os eq "";
+ return $os;
+});
+
+if (Get("OS") eq "Linux") {
+ Set("CONFIG_LINUX");
+} else {
+ Fail "Don't know how to run on this operating system.";
+}
+
+### Compiler ###
# Default compiler
Test("CC", "Checking for C compiler", sub { return "gcc"; });
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("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 $arch = "";
+ if (IsSet("CONFIG_EXACT_CPU") && IsSet("CONFIG_LINUX") && open X, "/proc/cpuinfo") {
+ my %pc = ();
+ while (<X>) {
+ chomp;
+ /^$/ && last;
+ /^([^\t]+)\t+:\s*(.*)$/ and $pc{$1}=$2;
+ }
+ close X;
+
+ # 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 "(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 undef;
+ }
+});
+
+if (!IsSet("CPU_ARCH")) { Warn "CPU type not recognized, using defaults, keep fingers crossed."; }
+
+### 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
Set("COPT2" => '-O3');
# 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 {
- Log "WARNING: Don't know anything about this GCC version, using default switches.\n";
+ Warn "Don't know anything about this GCC version, using default switches.\n";
}
if (IsSet("CONFIG_DEBUG")) {
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_ARCH" => 'i686') if !IsSet("CPU_ARCH");
-Set("CPU_I386");
-Set("CPU_LITTLE_ENDIAN");
-#CPU_BIG_ENDIAN=1
-Set("CPU_ALLOW_UNALIGNED");
-Set("CPU_STRUCT_ALIGN" => 4);
-Set("CPU_64BIT_POINTERS");
-
-### OS Type ###
-
-Set("CONFIG_LINUX");
-
# Return success
1;
projects / libucw.git / blobdiff