Configure: base compiler-specific decisions on pre-defines.
The commit subject is a bit misleading in sense that decisions affect
only gcc and gcc-alikes, like clang, recent icc...
@@ -117,12 +117,12 @@ my $usage="Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [-Dxxx] [-lx
# but 'long long' type.
my $gcc_devteam_warn = "-DDEBUG_UNUSED"
- . " -Wswitch"
. " -DPEDANTIC -pedantic -Wno-long-long"
. " -Wall"
. " -Wextra"
. " -Wno-unused-parameter"
. " -Wno-missing-field-initializers"
+ . " -Wswitch"
. " -Wsign-compare"
. " -Wmissing-prototypes"
. " -Wshadow"
@@ -1257,30 +1257,30 @@ unless ($disabled{asm}) {
}
}
-my $ecc = $target{cc};
-if ($^O ne "VMS" && !$disabled{makedepend}) {
- # Is the compiler gcc or clang? $ecc is used below to see if
- # error-checking can be turned on.
- my $ccpcc = "$config{cross_compile_prefix}$target{cc}";
- open(PIPE, "$ccpcc --version 2>&1 |");
- my $lines = 2;
+my %predefined;
+
+if ($^O ne "VMS") {
+ my $cc = "$config{cross_compile_prefix}$target{cc}";
+
+ # collect compiler pre-defines from gcc or gcc-alike...
+ open(PIPE, "$cc -dM -E -x c /dev/null 2>&1 |");
while (<PIPE>) {
- # Find the version number and save the major.
- m|(?:.*)\b(\d+)\.\d+\.\d+\b(?:.*)|;
- my $compiler_major = $1;
- # We know that GNU C version 3 and up as well as all clang
- # versions support dependency generation
- $config{makedepprog} = $ccpcc
- if (/clang/ || (/gcc/ && $compiler_major >= 3));
- $ecc = "clang" if /clang/;
- $ecc = "gcc" if /gcc/;
- last if ($config{makedepprog} || !$lines--);
+ m/^#define\s+(\w+(?:\(\w+\))?)(?:\s+(.+))?/ or last;
+ $predefined{$1} = $2 // "";
}
close(PIPE);
- $config{makedepprog} = which('makedepend') unless $config{makedepprog};
+ if (!$disabled{makedepend}) {
+ # We know that GNU C version 3 and up as well as all clang
+ # versions support dependency generation
+ if ($predefined{__GNUC__} >= 3) {
+ $config{makedepprog} = $cc;
+ } else {
+ $config{makedepprog} = which('makedepend');
$disabled{makedepend} = "unavailable" unless $config{makedepprog};
}
+ }
+}
@@ -1324,13 +1324,13 @@ if (defined($config{api})) {
if ($strict_warnings)
{
my $wopt;
- die "ERROR --strict-warnings requires gcc or clang"
- unless $ecc eq 'gcc' || $ecc eq 'clang';
+ die "ERROR --strict-warnings requires gcc or gcc-alike"
+ unless defined($predefined{__GNUC__});
foreach $wopt (split /\s+/, $gcc_devteam_warn)
{
$config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
}
- if ($ecc eq "clang")
+ if (defined($predefined{__clang__}))
{
foreach $wopt (split /\s+/, $clang_devteam_warn)
{
