[Native] Drop explicit -fPIC flag setup

We don't need to explicitly set -fPIC flag everywhere
because since d82109cc92
it is set by default for all ClangArgs users.

kotlin-native/Interop/Indexer/build.gradle.kts

@@ -46,9 +46,6 @@ val libclang =
 val cflags = mutableListOf( "-I$llvmDir/include",
         "-I${project(":kotlin-native:libclangext").projectDir.absolutePath}/src/main/include",
                             *platformManager.hostPlatform.clang.hostCompilerArgsForJni)
-if (!HostManager.hostIsMingw) {
-    cflags += "-fPIC"
-}
 
 val ldflags = mutableListOf("$llvmDir/$libclang", "-L${libclangextDir.absolutePath}", "-lclangext")
 

kotlin-native/Interop/Indexer/clang.def

@@ -4,13 +4,11 @@ headerFilter = clang-c/**
 
 compiler = clang
 
-compilerOpts = -std=c99 -fPIC
+compilerOpts = -std=c99
 linkerOpts.linux = -Wl,-z,noexecstack
 
 linker = clang++
 
-linkerOpts = -fPIC
-
 strictEnums = CXErrorCode CXCursorKind CXTypeKind CXDiagnosticSeverity CXLoadDiag_Error CXSaveError \
     CXTUResourceUsageKind CXLinkageKind CXVisibilityKind CXLanguageKind CXCallingConv CXChildVisitResult \
     CXTokenKind CXEvalResultKind CXVisitorResult CXResult CXIdxEntityKind

kotlin-native/Interop/Runtime/build.gradle.kts

@@ -36,9 +36,6 @@ native {
     val hostLibffiDir = rootProject.project(":kotlin-native").extra["${host}LibffiDir"]
     val cflags = mutableListOf("-I$hostLibffiDir/include",
                                *platformManager.hostPlatform.clang.hostCompilerArgsForJni)
-    if (!HostManager.hostIsMingw) {
-        cflags += "-fPIC"
-    }
     suffixes {
         (".c" to ".$obj") {
             tool(*platformManager.hostPlatform.clang.clangC("").toTypedArray())