From: YOKOTA Hiroshi <yokota.hgml@gmail.com>
Date: Tue, 10 Nov 2020 22:37:21 +0900
Subject: Add visibility attribute to reduce export table

Forwarded: not-needed
---
 dll.cpp  | 12 ++++++++++++
 dll.hpp  | 24 ++++++++++++------------
 makefile |  2 +-
 3 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/dll.cpp b/dll.cpp
index 31818e4..e54a3e0 100644
--- a/dll.cpp
+++ b/dll.cpp
@@ -14,6 +14,7 @@ struct DataSet
 };
 
 
+__attribute__ ((visibility ("default")))
 HANDLE PASCAL RAROpenArchive(struct RAROpenArchiveData *r)
 {
   RAROpenArchiveDataEx rx;
@@ -30,6 +31,7 @@ HANDLE PASCAL RAROpenArchive(struct RAROpenArchiveData *r)
 }
 
 
+__attribute__ ((visibility ("default")))
 HANDLE PASCAL RAROpenArchiveEx(struct RAROpenArchiveDataEx *r)
 {
   DataSet *Data=NULL;
@@ -165,6 +167,7 @@ HANDLE PASCAL RAROpenArchiveEx(struct RAROpenArchiveDataEx *r)
 }
 
 
+__attribute__ ((visibility ("default")))
 int PASCAL RARCloseArchive(HANDLE hArcData)
 {
   DataSet *Data=(DataSet *)hArcData;
@@ -181,6 +184,7 @@ int PASCAL RARCloseArchive(HANDLE hArcData)
 }
 
 
+__attribute__ ((visibility ("default")))
 int PASCAL RARReadHeader(HANDLE hArcData,struct RARHeaderData *D)
 {
   struct RARHeaderDataEx X;
@@ -206,6 +210,7 @@ int PASCAL RARReadHeader(HANDLE hArcData,struct RARHeaderData *D)
 }
 
 
+__attribute__ ((visibility ("default")))
 int PASCAL RARReadHeaderEx(HANDLE hArcData,struct RARHeaderDataEx *D)
 {
   DataSet *Data=(DataSet *)hArcData;
@@ -417,18 +422,21 @@ int PASCAL ProcessFile(HANDLE hArcData,int Operation,char *DestPath,char *DestNa
 }
 
 
+__attribute__ ((visibility ("default")))
 int PASCAL RARProcessFile(HANDLE hArcData,int Operation,char *DestPath,char *DestName)
 {
   return ProcessFile(hArcData,Operation,DestPath,DestName,NULL,NULL);
 }
 
 
+__attribute__ ((visibility ("default")))
 int PASCAL RARProcessFileW(HANDLE hArcData,int Operation,wchar *DestPath,wchar *DestName)
 {
   return ProcessFile(hArcData,Operation,NULL,NULL,DestPath,DestName);
 }
 
 
+__attribute__ ((visibility ("default")))
 void PASCAL RARSetChangeVolProc(HANDLE hArcData,CHANGEVOLPROC ChangeVolProc)
 {
   DataSet *Data=(DataSet *)hArcData;
@@ -436,6 +444,7 @@ void PASCAL RARSetChangeVolProc(HANDLE hArcData,CHANGEVOLPROC ChangeVolProc)
 }
 
 
+__attribute__ ((visibility ("default")))
 void PASCAL RARSetCallback(HANDLE hArcData,UNRARCALLBACK Callback,LPARAM UserData)
 {
   DataSet *Data=(DataSet *)hArcData;
@@ -444,6 +453,7 @@ void PASCAL RARSetCallback(HANDLE hArcData,UNRARCALLBACK Callback,LPARAM UserDat
 }
 
 
+__attribute__ ((visibility ("default")))
 void PASCAL RARSetProcessDataProc(HANDLE hArcData,PROCESSDATAPROC ProcessDataProc)
 {
   DataSet *Data=(DataSet *)hArcData;
@@ -451,6 +461,7 @@ void PASCAL RARSetProcessDataProc(HANDLE hArcData,PROCESSDATAPROC ProcessDataPro
 }
 
 
+__attribute__ ((visibility ("default")))
 void PASCAL RARSetPassword(HANDLE hArcData,char *Password)
 {
 #ifndef RAR_NOCRYPT
@@ -463,6 +474,7 @@ void PASCAL RARSetPassword(HANDLE hArcData,char *Password)
 }
 
 
+__attribute__ ((visibility ("default")))
 int PASCAL RARGetDllVersion()
 {
   return RAR_DLL_VERSION;
diff --git a/dll.hpp b/dll.hpp
index c785ff1..268c2ce 100644
--- a/dll.hpp
+++ b/dll.hpp
@@ -167,18 +167,18 @@ typedef int (PASCAL *PROCESSDATAPROC)(unsigned char *Addr,int Size);
 extern "C" {
 #endif
 
-HANDLE PASCAL RAROpenArchive(struct RAROpenArchiveData *ArchiveData);
-HANDLE PASCAL RAROpenArchiveEx(struct RAROpenArchiveDataEx *ArchiveData);
-int    PASCAL RARCloseArchive(HANDLE hArcData);
-int    PASCAL RARReadHeader(HANDLE hArcData,struct RARHeaderData *HeaderData);
-int    PASCAL RARReadHeaderEx(HANDLE hArcData,struct RARHeaderDataEx *HeaderData);
-int    PASCAL RARProcessFile(HANDLE hArcData,int Operation,char *DestPath,char *DestName);
-int    PASCAL RARProcessFileW(HANDLE hArcData,int Operation,wchar_t *DestPath,wchar_t *DestName);
-void   PASCAL RARSetCallback(HANDLE hArcData,UNRARCALLBACK Callback,LPARAM UserData);
-void   PASCAL RARSetChangeVolProc(HANDLE hArcData,CHANGEVOLPROC ChangeVolProc);
-void   PASCAL RARSetProcessDataProc(HANDLE hArcData,PROCESSDATAPROC ProcessDataProc);
-void   PASCAL RARSetPassword(HANDLE hArcData,char *Password);
-int    PASCAL RARGetDllVersion();
+__attribute__ ((visibility ("default"))) HANDLE PASCAL RAROpenArchive(struct RAROpenArchiveData *ArchiveData);
+__attribute__ ((visibility ("default"))) HANDLE PASCAL RAROpenArchiveEx(struct RAROpenArchiveDataEx *ArchiveData);
+__attribute__ ((visibility ("default"))) int    PASCAL RARCloseArchive(HANDLE hArcData);
+__attribute__ ((visibility ("default"))) int    PASCAL RARReadHeader(HANDLE hArcData,struct RARHeaderData *HeaderData);
+__attribute__ ((visibility ("default"))) int    PASCAL RARReadHeaderEx(HANDLE hArcData,struct RARHeaderDataEx *HeaderData);
+__attribute__ ((visibility ("default"))) int    PASCAL RARProcessFile(HANDLE hArcData,int Operation,char *DestPath,char *DestName);
+__attribute__ ((visibility ("default"))) int    PASCAL RARProcessFileW(HANDLE hArcData,int Operation,wchar_t *DestPath,wchar_t *DestName);
+__attribute__ ((visibility ("default"))) void   PASCAL RARSetCallback(HANDLE hArcData,UNRARCALLBACK Callback,LPARAM UserData);
+__attribute__ ((visibility ("default"))) void   PASCAL RARSetChangeVolProc(HANDLE hArcData,CHANGEVOLPROC ChangeVolProc);
+__attribute__ ((visibility ("default"))) void   PASCAL RARSetProcessDataProc(HANDLE hArcData,PROCESSDATAPROC ProcessDataProc);
+__attribute__ ((visibility ("default"))) void   PASCAL RARSetPassword(HANDLE hArcData,char *Password);
+__attribute__ ((visibility ("default"))) int    PASCAL RARGetDllVersion();
 
 #ifdef __cplusplus
 }
diff --git a/makefile b/makefile
index f057518..d2c927f 100644
--- a/makefile
+++ b/makefile
@@ -4,7 +4,7 @@
 # Linux using GCC
 CXX = c++
 CXXFLAGS +=
-LIBFLAGS += -fPIC
+LIBFLAGS += -fPIC -fvisibility=hidden -fvisibility-inlines-hidden
 DEFINES += -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DRAR_SMP
 STRIP = true
 AR = ar