use execvp for finding cpp in rpcgen

diff --git a/ChangeLog b/ChangeLog
index fabbc57ecaef776e7ba4ff6778333e1cdfb2a1ab..4142630499765b2da974a419136b0484c974d256 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2003-03-30  NeilBrown <neilb@cse.unsw.edu.au>
+
+       * tools/rpcgen/rpc_main.c(find_cpp): removed
+       * tools/rpcgen/rpc_main.c(open_input): use execvp to find "ccp", 
+       then try hard-coded paths.
+       
 2003-03-26  Chip Salzenberg  <chip@pobox.com>
 
        * debian/changelog: Version 1.0.3-1.

diff --git a/tools/rpcgen/rpc_main.c b/tools/rpcgen/rpc_main.c
index 39b667e1dd7d0ac56c8cdf2e9bb1c75da45269c9..265106029cc79dd914d7097b11ecc8bffbd25a48 100644 (file)
--- a/tools/rpcgen/rpc_main.c
+++ b/tools/rpcgen/rpc_main.c
@@ -45,6 +45,7 @@ static char sccsid[] = "@(#)rpc_main.c 1.30 89/03/30 (C) 1987 SMI";
 #include <stdlib.h>
 #include <unistd.h>
 #include <ctype.h>
+#include <errno.h>
 #include "rpc_parse.h"
 #include "rpc_util.h"
 #include "rpc_scan.h"
@@ -67,7 +68,6 @@ static char * extendfile(char *file, char *ext);
 static void    open_output(char *infile, char *outfile);
 static void    add_warning(void);
 static void    clear_args(void);
-static void    find_cpp(void);
 static void    open_input(char *infile, char *define);
 static int     check_nettype(char *name, char **list_to_check);
 static void    c_output(char *infile, char *define, int extend, char *outfile);
@@ -293,26 +293,6 @@ clear_args(void)
   argcount = FIXEDARGS;
 }
 
-/* make sure that a CPP exists */
-static void
-find_cpp(void)
-{
-       struct stat     buf;
-
-       if (stat(CPP, &buf) < 0) {      /* SVR4 or explicit cpp does not exist */
-               if (cppDefined) {
-                       fprintf(stderr, "cannot find C preprocessor: %s \n", CPP);
-                       crash();
-               } else {        /* try the other one */
-                       CPP = SUNOS_CPP;
-                       if (stat(CPP, &buf) < 0) {      /* can't find any cpp */
-                               fprintf(stderr, "cannot find any C preprocessor (cpp)\n");
-                               crash();
-                       }
-               }
-       }
-}
-
 /*
  * Open input file with given define for C-preprocessor 
  */
@@ -325,8 +305,7 @@ open_input(char *infile, char *define)
        (void) pipe(pd);
        switch (fork()) {
        case 0:
-               find_cpp();
-               putarg(0, CPP);
+               putarg(0, "cpp");
                putarg(1, CPPFLAGS);
                addarg(define);
                addarg(infile);
@@ -334,7 +313,15 @@ open_input(char *infile, char *define)
                (void) close(1);
                (void) dup2(pd[1], 1);
                (void) close(pd[0]);
-               execv(arglist[0], arglist);
+               if (cppDefined)
+                       execv(CPP, arglist);
+               else {
+                       execvp("cpp", arglist);
+                       if (errno == ENOENT)
+                               execvp(SVR4_CPP, arglist);
+                       if (errno == ENOENT)
+                               execvp(SUNOS_CPP, arglist);
+               }
                perror("execv");
                exit(1);
        case -1: