feat: binary classifier for GCC (#2479)

Signed-off-by: Laurent Goderre <laurent.goderre@docker.com>

syft/pkg/cataloger/binary/cataloger_test.go

@@ -805,6 +805,17 @@ func Test_Cataloger_PositiveCases(t *testing.T) {
 				Metadata:  metadata("openssl-binary"),
 			},
 		},
+		{
+			logicalFixture: "gcc/12.3.0/linux-amd64",
+			expected: pkg.Package{
+				Name:      "gcc",
+				Version:   "12.3.0",
+				Type:      "binary",
+				PURL:      "pkg:generic/gcc@12.3.0",
+				Locations: locations("gcc"),
+				Metadata:  metadata("gcc-binary"),
+			},
+		},
 	}
 
 	for _, test := range tests {

syft/pkg/cataloger/binary/default_classifiers.go

@@ -350,6 +350,17 @@ func DefaultClassifiers() []Classifier {
 			PURL:    mustPURL("pkg:generic/openssl@version"),
 			CPEs:    singleCPE("cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*"),
 		},
+		{
+			Class:    "gcc-binary",
+			FileGlob: "**/gcc",
+			EvidenceMatcher: FileContentsVersionMatcher(
+				// GCC: \(GNU\)  12.3.0'
+				`GCC: \(GNU\) (?P<version>[0-9]+\.[0-9]+\.[0-9]+)`,
+			),
+			Package: "gcc",
+			PURL:    mustPURL("pkg:generic/gcc@version"),
+			CPEs:    singleCPE("cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:*"),
+		},
 	}
 }
 

syft/pkg/cataloger/binary/test-fixtures/config.yaml

@@ -24,6 +24,13 @@ from-images:
     paths:
       - /usr/local/bin/bash
 
+  - version: 12.3.0
+    images:
+      - ref: gcc:12.3.0-bookworm@sha256:2e3c00752fa23a0993b6618760bbc20263b272a0b34b2d4883159e3ebba9d8b6
+        platform: linux/amd64
+    paths:
+      - /usr/local/bin/gcc
+
   - version: 25.3.2.6
     images:
       - ref: erlang:25.3.2.6@sha256:0d1e530ec0e8047094f0a1d841754515bad9b0554260a3147fb34df31b3064fe