scan: add build-time data as well

describe-tests.conf

@@ -229,3 +229,9 @@ This test has a list of 140+ different octal, decimal and hexadecimal numbers
 in strings. They include both valid and invalid numbers. The test parses each
 such number 500,000 times each. The result is the average time in nanoseconds
 the parser functions took across all invocations.
+
+[build]
+
+This measures the time used (in integer seconds) for the configure + make
+sequence when building curl for the performance tests. Disabled shared build,
+unity with optimization.

scan.pl

@@ -819,6 +819,8 @@ sub single {
     my @h1rate;
     my $git = "";
     my $scan = "";
+    my $buildstart;
+    my $builddone;
 
     # always just keep the latest of these
     undef @curlv;
@@ -910,6 +912,12 @@ sub single {
         elsif(/^confopts: (.*)/) {
             push @confopts, $1;
         }
+        elsif(/^(.*) configure non-debug/) {
+            $buildstart = $1;
+        }
+        elsif(/^(.*) make -C tests/) {
+            $builddone = $1;
+        }
         elsif(/^structs: (.*)\t(\d+)\t\d*/) {
             my ($struct, $size) = ($1,$2);
             if($struct eq "Curl_easy") {
@@ -1010,6 +1018,12 @@ sub single {
             $h1limitcpu{$scan} = $cpu;
         }
     }
+
+    if($buildstart && $builddone) {
+        # get the build time
+        $buildtime{$scan} = `date +%s -d "$builddone"` -
+            `date +%s -d "$buildstart"`;
+    }
 }
 
 for my $l (sort @logs) {
@@ -1266,6 +1280,10 @@ sub single {
                    "lower",
                    "numparser",
                    "nanoseconds", %numparser) if %numparser;
+push @output, show("autotools build time",
+                   "lower",
+                   "build",
+                   "seconds", %buildtime) if %buildtime;
 
 printf "<details><summary>%u data-points</summary>\n", scalar(%alltests);