X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lib%2Fautoconf.cfg;h=3c81f034b021816b350b6c5ae30d0fcd089cf5d7;hb=6a26177ec0df11f55bff590d63ea02e7c9884993;hp=2fea596c734412421ad4fd68c0f88d3a79e2e873;hpb=2a913783dd6b2f5e0351724b9de55db62b99320a;p=libucw.git diff --git a/lib/autoconf.cfg b/lib/autoconf.cfg index 2fea596c..3c81f034 100644 --- a/lib/autoconf.cfg +++ b/lib/autoconf.cfg @@ -1,19 +1,136 @@ # Automatic configuration of the UCW Library # (c) 2005 Martin Mares -Set("CC" => "gcc-3.0"); +### 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"; }); + +# 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("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 $arch = ""; + if (IsSet("CONFIG_EXACT_CPU") && IsSet("CONFIG_LINUX") && open X, "/proc/cpuinfo") { + my %pc = (); + while () { + chomp; + /^$/ && 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" => ""); @@ -26,44 +143,40 @@ Set("CSHARED" => '-fPIC'); Set("LSHARED" => '-shared -Wl,-soname,lib/$(@F)'); # Extra switches depending on GCC version: -# [FIXME] -#GCCVER:=$(shell $(CC) --version | sed '2,$$d; s/^\(.* \)\?\([0-9]*\.[0-9]*\).*/\2/') -#ifeq ($(GCCVER),3.3) -#CWARNS+=-Wundef -Wredundant-decls -#COPT+=-finline-limit=20000 --param max-inline-insns-auto=1000 -#endif -#ifeq ($(GCCVER),3.4) -#CWARNS+=-Wundef -Wredundant-decls -#COPT+=-finline-limit=5000 --param large-function-insns=5000 --param inline-unit-growth=200 --param large-function-growth=400 -#endif - -# If debugging: -Set("CDEBUG" => '-DDEBUG_ASSERTS -ggdb'); -#CDEBUG+=-DDEBUG_DIE_BY_ABORT +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 ($gccver == 3004) { + Append("CWARNS" => "-Wundef -Wredundant-decls"); + Append("COPT" => "-finline-limit=2000 --param large-function-insns=5000 --param inline-unit-growth=200 --param large-function-growth=400"); +} elsif ($gccver == 4000) { + 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"; +} + +if (IsSet("CONFIG_DEBUG")) { + # If debugging: + Set("DEBUG_ASSERTS"); + Set("DEBUG_DIE_BY_ABORT") if Get("CONFIG_DEBUG") > 1; + Set("CDEBUG" => "-ggdb"); +} else { + # If building a release version: + Append("COPT" => "-fomit-frame-pointer"); + 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 -# If building release versions: -#CDEBUG= -#COPT+=-fomit-frame-pointer -#LOPT+=-s - -### CPU Type and Features ### - -Set("CPU_ARCH" => 'i686'); -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;