[Linker] Move gcc linkage flags to konan.properties

kotlin-native/konan/konan.properties

@@ -57,6 +57,8 @@ llvm.macos_x64.user = clang-llvm-apple-8.0.0-darwin-macos
 llvmInlineThreshold = 100
 clangDebugFlags = -O0
 
+linkerGccFlags = -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed
+
 llvmVersion.linux_x64 = 8.0.0
 llvmVersion.mingw_x64 = 8.0.1
 llvmVersion.macos_x64 = 8.0.0

kotlin-native/shared/src/main/kotlin/org/jetbrains/kotlin/konan/target/Configurables.kt

@@ -81,6 +81,7 @@ interface GccConfigurables : TargetableConfigurables, ClangFlags {
     val libGcc get() = targetString("libGcc")!!
     val dynamicLinker get() = targetString("dynamicLinker")!!
     val abiSpecificLibraries get() = targetList("abiSpecificLibraries")
+    val linkerGccFlags get() = targetList("linkerGccFlags")
 }
 
 interface AndroidConfigurables : TargetableConfigurables, ClangFlags

kotlin-native/shared/src/main/kotlin/org/jetbrains/kotlin/konan/target/Linker.kt

@@ -369,8 +369,7 @@ class GccBasedLinker(targetProperties: GccConfigurables)
             // https://github.com/llvm/llvm-project/blob/21e270a479a24738d641e641115bce6af6ed360a/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp#L930
             if (needsProfileLibrary) +listOf("-u__llvm_profile_runtime", profileLibrary!!)
             +linkerKonanFlags
-            +listOf("-lgcc", "--as-needed", "-lgcc_s", "--no-as-needed",
-                    "-lc", "-lgcc", "--as-needed", "-lgcc_s", "--no-as-needed")
+            +linkerGccFlags
             +if (dynamic) "$libGcc/crtendS.o" else "$libGcc/crtend.o"
             +"$absoluteTargetSysRoot/$crtPrefix/crtn.o"
             +libraries