master a5cbd98376 3/9: Omit unnecessary code when !HAVE_NATIVE_COMP

[Paul Eggert]

branch: master
commit a5cbd983767c5b3e18e7b039795d036262b41958
Author: Paul Eggert <eggert@cs.ucla.edu>
Commit: Paul Eggert <eggert@cs.ucla.edu>

    Omit unnecessary code when !HAVE_NATIVE_COMP
    
    * src/decompress.c (MD5_BLOCKSIZE, acc_buf, acc_size)
    (accumulate_and_process_md5, final_process_md5, md5_gz_stream):
    * src/dynlib.c (dynlib_open_for_eln, dynlib_close) [!WINDOWSNT]:
    * src/fileio.c (internal_delete_file_1, internal_delete_file):
    Define only if HAVE_NATIVE_COMP && WINDOWSNT,
    as they’re not used otherwise.
---
 src/decompress.c | 10 ++++++----
 src/dynlib.c     |  4 ++++
 src/fileio.c     |  4 ++++
 3 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/src/decompress.c b/src/decompress.c
index ddd8abbf27..dbdc9104a3 100644
--- a/src/decompress.c
+++ b/src/decompress.c
@@ -67,8 +67,9 @@ init_zlib_functions (void)
 #endif /* WINDOWSNT */
 
 
+#ifdef HAVE_NATIVE_COMP
 
-#define MD5_BLOCKSIZE 32768 /* From md5.c  */
+# define MD5_BLOCKSIZE 32768 /* From md5.c  */
 
 static char acc_buff[2 * MD5_BLOCKSIZE];
 static size_t acc_size;
@@ -106,7 +107,7 @@ md5_gz_stream (FILE *source, void *resblock)
   unsigned char in[MD5_BLOCKSIZE];
   unsigned char out[MD5_BLOCKSIZE];
 
-#ifdef WINDOWSNT
+# ifdef WINDOWSNT
   if (!zlib_initialized)
     zlib_initialized = init_zlib_functions ();
   if (!zlib_initialized)
@@ -114,7 +115,7 @@ md5_gz_stream (FILE *source, void *resblock)
       message1 ("zlib library not found");
       return -1;
     }
-#endif
+# endif
 
   eassert (!acc_size);
 
@@ -164,7 +165,8 @@ md5_gz_stream (FILE *source, void *resblock)
 
   return 0;
 }
-#undef MD5_BLOCKSIZE
+# undef MD5_BLOCKSIZE
+#endif
 
 
 
diff --git a/src/dynlib.c b/src/dynlib.c
index 8cb9a23374..e2c71f1448 100644
--- a/src/dynlib.c
+++ b/src/dynlib.c
@@ -279,11 +279,13 @@ dynlib_open (const char *path)
   return dlopen (path, RTLD_LAZY | RTLD_GLOBAL);
 }
 
+# ifdef HAVE_NATIVE_COMP
 dynlib_handle_ptr
 dynlib_open_for_eln (const char *path)
 {
   return dlopen (path, RTLD_LAZY);
 }
+# endif
 
 void *
 dynlib_sym (dynlib_handle_ptr h, const char *sym)
@@ -313,11 +315,13 @@ dynlib_error (void)
   return dlerror ();
 }
 
+# ifdef HAVE_NATIVE_COMP
 int
 dynlib_close (dynlib_handle_ptr h)
 {
   return dlclose (h) == 0;
 }
+# endif
 
 #else
 
diff --git a/src/fileio.c b/src/fileio.c
index a0282204de..5d66a93ac6 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -2505,6 +2505,8 @@ With a prefix argument, TRASH is nil.  */)
   return Qnil;
 }
 
+#if defined HAVE_NATIVE_COMP && defined WINDOWSNT
+
 static Lisp_Object
 internal_delete_file_1 (Lisp_Object ignore)
 {
@@ -2523,6 +2525,8 @@ internal_delete_file (Lisp_Object filename)
                                   Qt, internal_delete_file_1);
   return NILP (tem);
 }
+
+#endif
 
 /* Return -1 if FILE is a case-insensitive file name, 0 if not,
    and a positive errno value if the result cannot be determined.  */