compat/strdup.h: move common compat check for strdup() to own file

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

CMakeLists.txt

@@ -23,6 +23,7 @@ endif()
 include_directories(${CMAKE_CURRENT_BINARY_DIR}/include)
 
 set(JSON_C_HEADERS
+    ./compat/strdup.h
     ./json.h
     ${CMAKE_CURRENT_BINARY_DIR}/include/config.h
     ./json_config.h

Makefile.am

@@ -18,6 +18,7 @@ libjson_cincludedir = $(includedir)/json-c
 libjson_cinclude_HEADERS = \
 	arraylist.h \
 	bits.h \
+	compat/strdup.h \
 	debug.h \
 	json.h \
 	json_c_version.h \

compat/strdup.h

@@ -0,0 +1,13 @@
+#ifndef __STRDUP_H_COMPAT__
+#define __STRDUP_H_COMPAT__
+
+#include "../config.h"
+
+#if !defined(HAVE_STRDUP) && defined(_MSC_VER)
+  /* MSC has the version as _strdup */
+# define strdup _strdup
+#elif !defined(HAVE_STRDUP)
+# error You do not have strdup on your system.
+#endif /* HAVE_STRDUP */
+
+#endif /* __STRDUP_H_COMPAT__ */

json-c.vcproj

@@ -131,6 +131,9 @@ copy json_config.h.win32 json_config.h"/>
 			<File
 				RelativePath=".\bits.h">
 			</File>
+			<File
+				RelativePath=".\compat\strdup.h">
+			</File>
 			<File
 				RelativePath=".\debug.h">
 			</File>

json-c.vcxproj

@@ -141,6 +141,7 @@ copy json_config.h.win32 json_config.h
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="arraylist.h" />
+    <ClInclude Include="compat\strdup.h" />
     <ClInclude Include="debug.h" />
     <ClInclude Include="json_inttypes.h" />
     <ClInclude Include="json_object.h" />
@@ -162,4 +163,4 @@ copy json_config.h.win32 json_config.h
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>

json-c.vcxproj.filters

@@ -47,6 +47,9 @@
     <ClInclude Include="arraylist.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="compat\strdup.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
     <ClInclude Include="debug.h">
       <Filter>Header Files</Filter>
     </ClInclude>
@@ -87,4 +90,4 @@
     <None Include="README-WIN32.html" />
     <None Include="README.html" />
   </ItemGroup>
-</Project>
+</Project>

json_object.c

@@ -29,13 +29,7 @@
 #include "json_object_private.h"
 #include "json_util.h"
 #include "math_compat.h"
-
-#if !defined(HAVE_STRDUP) && defined(_MSC_VER)
-  /* MSC has the version as _strdup */
-# define strdup _strdup
-#elif !defined(HAVE_STRDUP)
-# error You do not have strdup on your system.
-#endif /* HAVE_STRDUP */
+#include "compat/strdup.h"
 
 #if !defined(HAVE_SNPRINTF) && defined(_MSC_VER)
   /* MSC has the version as _snprintf */

json_tokener.c

@@ -31,6 +31,7 @@
 #include "json_object.h"
 #include "json_tokener.h"
 #include "json_util.h"
+#include "compat/strdup.h"
 
 #ifdef HAVE_LOCALE_H
 #include <locale.h>
@@ -41,13 +42,6 @@
 
 #define jt_hexdigit(x) (((x) <= '9') ? (x) - '0' : ((x) & 7) + 9)
 
-#if !HAVE_STRDUP && defined(_MSC_VER)
-  /* MSC has the version as _strdup */
-# define strdup _strdup
-#elif !HAVE_STRDUP
-# error You do not have strdup on your system.
-#endif /* HAVE_STRDUP */
-
 #if !HAVE_STRNCASECMP && defined(_MSC_VER)
   /* MSC has the version as _strnicmp */
 # define strncasecmp _strnicmp