X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=Configure;h=b1b847c59d6a0bea5e09832e9590398eb447dd2c;hp=57cdeb3dc40a8ff61818415ec7ce702bbd33b0c7;hb=9e84a42db497e06a38f804b5acd09b6aa4f87db3;hpb=302eba3f6dd588f1269aba4605a007ae86b583db

diff --git a/Configure b/Configure
index 57cdeb3dc4..b1b847c59d 100755
--- a/Configure
+++ b/Configure
@@ -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"
@@ -141,7 +141,6 @@ my $gcc_devteam_warn = "-DDEBUG_UNUSED"
 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
 my $clang_devteam_warn = ""
-        . " -Qunused-arguments"
         . " -Wswitch-default"
         . " -Wno-parentheses-equality"
         . " -Wno-language-extension-token"
@@ -149,6 +148,7 @@ my $clang_devteam_warn = ""
         . " -Wconditional-uninitialized"
         . " -Wincompatible-pointer-types-discards-qualifiers"
         . " -Wmissing-variable-declarations"
+        . " -Wno-unknown-warning-option"
         ;
 
 # This adds backtrace information to the memory leak info.  Is only used
@@ -514,7 +514,7 @@ my @disable_cascades = (
     # no-autoalginit is only useful when building non-shared
     "autoalginit"       => [ "shared", "apps" ],
 
-    "stdio"             => [ "apps", "capieng" ],
+    "stdio"             => [ "apps", "capieng", "egd" ],
     "apps"              => [ "tests" ],
     "tests"             => [ "external-tests" ],
     "comp"              => [ "zlib" ],
@@ -1257,29 +1257,29 @@ 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;
-    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} || !$lines--);
+my %predefined;
+
+if ($^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>) {
+	m/^#define\s+(\w+(?:\(\w+\))?)(?:\s+(.+))?/ or last;
+	$predefined{$1} = $2 // "";
     }
     close(PIPE);
 
-    $config{makedepprog} = which('makedepend') unless $config{makedepprog};
-    $disabled{makedepend} = "unavailable" 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};
+	}
+    }
 }
 
 
@@ -1321,16 +1321,23 @@ if (defined($config{api})) {
     push @{$config{defines}}, $apiflag;
 }
 
+if (defined($predefined{__clang__}) && !$disabled{asm}) {
+    $config{cflags} .= " -Qunused-arguments";
+}
+
 if ($strict_warnings)
 	{
 	my $wopt;
-	die "ERROR --strict-warnings requires gcc, clang or icc"
-            unless $ecc eq 'gcc' || $ecc eq 'clang' || $ecc eq 'icc';
+	my $gccver = $predefined{__GNUC__} // -1;
+
+	die "ERROR --strict-warnings requires gcc[>=4] or gcc-alike"
+            unless $gccver >= 4;
+	$gcc_devteam_warn .= " -Wmisleading-indentation" if $gccver >= 6;
 	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)
 			{