fix(macos): add deployment target flags for compatibility

- Set macOS minimum deployment target to 13.0 across build configurations
- Apply target flags to CFLAGS, CPPFLAGS, and LDFLAGS for autoconf builds
- Apply target flags to FFmpeg extra compiler and linker flags
- Ensures consistent build environment for macOS compatibility

Author: flexiondotorg

.github/workflows/ffmpeg-release.yml

@@ -32,7 +32,7 @@ jobs:
             runner: macos-15-intel
           - os: darwin
             arch: arm64
-            runner: macos-latest
+            runner: macos-15
       fail-fast: false
 
     steps:

.github/workflows/ffmpeg-test.yml

@@ -31,7 +31,7 @@ jobs:
             runner: macos-15-intel
           - os: darwin
             arch: arm64
-            runner: macos-latest
+            runner: macos-15
       fail-fast: false
 
     steps:

.github/workflows/go.yml

@@ -25,7 +25,7 @@ jobs:
             runner: macos-15-intel
           - os: darwin
             arch: arm64
-            runner: macos-latest
+            runner: macos-15
       fail-fast: false
 
     steps:

internal/builder/buildsystems.go

@@ -26,10 +26,22 @@ func (a *AutoconfBuild) Configure(lib *Library, srcPath, buildDir, installDir st
 		incDir := filepath.Join(installDir, "include")
 		libDir := filepath.Join(installDir, "lib")
 
+		cflags := fmt.Sprintf("-O3 -I%s", incDir)
+		cppflags := fmt.Sprintf("-I%s", incDir)
+		ldflags := fmt.Sprintf("-L%s", libDir)
+
+		// Add macOS deployment target to ensure compatibility
+		if runtime.GOOS == "darwin" {
+			deploymentTarget := " -mmacosx-version-min=13.0"
+			cflags += deploymentTarget
+			cppflags += deploymentTarget
+			ldflags += deploymentTarget
+		}
+
 		args = append(args,
-			fmt.Sprintf("CFLAGS=-O3 -I%s", incDir),
-			fmt.Sprintf("CPPFLAGS=-I%s", incDir),
-			fmt.Sprintf("LDFLAGS=-L%s", libDir),
+			fmt.Sprintf("CFLAGS=%s", cflags),
+			fmt.Sprintf("CPPFLAGS=%s", cppflags),
+			fmt.Sprintf("LDFLAGS=%s", ldflags),
 		)
 	}
 

internal/builder/libraries.go

@@ -706,10 +706,19 @@ var ffmpeg = &Library{
 		incDir := filepath.Join(stagingDir, "include")
 		libDir := filepath.Join(stagingDir, "lib")
 
+		extraCflags := fmt.Sprintf("-I%s", incDir)
+		extraLdflags := fmt.Sprintf("-L%s", libDir)
+
+		// Add macOS deployment target to ensure compatibility
+		if os == "darwin" {
+			extraCflags += " -mmacosx-version-min=13.0"
+			extraLdflags += " -mmacosx-version-min=13.0"
+		}
+
 		args := []string{
 			"--pkg-config-flags=--static",
-			fmt.Sprintf("--extra-cflags=-I%s", incDir),
-			fmt.Sprintf("--extra-ldflags=-L%s", libDir),
+			fmt.Sprintf("--extra-cflags=%s", extraCflags),
+			fmt.Sprintf("--extra-ldflags=%s", extraLdflags),
 		}
 
 		// Add common FFmpeg arguments (platform-specific)

internal/builder/library.go

@@ -209,6 +209,8 @@ func buildEnv(installDir string) []string {
 
 	// Set minimum macOS deployment target to avoid version mismatch warnings
 	// This ensures libraries work on macOS 13.0 and later (supports Intel and Apple Silicon)
+	// Note: We also set -mmacosx-version-min=13.0 in compiler flags, but some build
+	// tools may check this environment variable directly
 	if runtime.GOOS == "darwin" {
 		hasDeploymentTarget := false
 		for _, e := range env {