X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/a7cbbf501402231457e8167b6d446f4df454ba17..17c761988f30054827a9951761d93ffeeaad0cb7:/src/src/buildconfig.c

diff --git a/src/src/buildconfig.c b/src/src/buildconfig.c
index 49d8c411a..1eaf2f505 100644
--- a/src/src/buildconfig.c
+++ b/src/src/buildconfig.c
@@ -1,5 +1,3 @@
-/* $Cambridge: exim/src/src/buildconfig.c,v 1.21 2010/06/13 08:26:40 pdp Exp $ */
-
 /*************************************************
 *     Exim - an Internet mail transport agent    *
 *************************************************/
@@ -42,16 +40,16 @@ normally called independently. */
 #include <grp.h>
 
 typedef struct {
-  char *name;
+  const char *name;
   int *flag;
 } have_item;
 
 typedef struct {
-  char *name;
+  const char *name;
   char *data;
 } save_item;
 
-static char *db_opts[] = { "", "USE_DB", "USE_GDBM", "USE_TDB" };
+static const char *db_opts[] = { "", "USE_DB", "USE_GDBM", "USE_TDB" };
 
 static int have_ipv6 = 0;
 static int have_iconv = 0;
@@ -103,8 +101,11 @@ main(int argc, char **argv)
 {
 off_t test_off_t = 0;
 time_t test_time_t = 0;
+#if ! (__STDC_VERSION__ >= 199901L)
 size_t test_size_t = 0;
+ssize_t test_ssize_t = 0;
 unsigned long test_ulong_t = 0L;
+#endif
 long test_long_t = 0;
 FILE *base;
 FILE *new;
@@ -179,15 +180,22 @@ else
 fprintf(new, "#endif\n\n");
 
 /* And for sizeof() results, size_t, which should with C99 be just %zu, deal
-with C99 not being ubiquitous yet.  Unfortunately. */
+with C99 not being ubiquitous yet.  Unfortunately.  Assume ssize_t is same
+size as size_t on C99; if someone comes up with a version where it's not, fix
+it then. */
 
 #if __STDC_VERSION__ >= 199901L
 fprintf(new, "#define SIZE_T_FMT  \"%%zu\"\n");
+fprintf(new, "#define SSIZE_T_FMT  \"%%zd\"\n");
 #else
 if (sizeof(test_size_t) > sizeof (test_ulong_t))
   fprintf(new, "#define SIZE_T_FMT  \"%%llu\"\n");
 else
   fprintf(new, "#define SIZE_T_FMT  \"%%lu\"\n");
+if (sizeof(test_ssize_t) > sizeof(test_long_t))
+  fprintf(new, "#define SSIZE_T_FMT  \"%%lld\"\n");
+else
+  fprintf(new, "#define SSIZE_T_FMT  \"%%ld\"\n");
 #endif
 
 /* Now search the makefile for certain settings */
@@ -332,6 +340,16 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
 
   while (*p == ' ' || *p == '\t') p++;
 
+  if (strncmp(p, "#ifdef ", 7) == 0
+   || strncmp(p, "#ifndef ", 8) == 0
+   || strncmp(p, "#if ", 4) == 0
+   || strncmp(p, "#endif", 6) == 0
+     )
+    {
+    fputs(buffer, new);
+    continue;
+    }
+
   if (strncmp(p, "#define ", 8) != 0) continue;
 
   p += 8;
@@ -557,9 +575,9 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
     int isgroup = name[10] == 'G';
     uid_t uid = 0;
     gid_t gid = 0;
-    char *s;
-    char *username = NULL;
-    char *user = getenv(name);
+    const char *s;
+    const char *username = NULL;
+    const char *user = getenv(name);
 
     if (user == NULL) user = "";
     while (isspace((unsigned char)(*user))) user++;
@@ -600,8 +618,7 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
       while (isspace(*user)) user++;
       username = user;
       }
-
-    else if (isgroup)
+else if (isgroup)
       {
       struct group *gr = getgrnam(user);
       if (gr == NULL)