3 * $Id: ghci.c,v 1.1 2001/07/30 10:40:36 rrt Exp $
5 * ghci wrapper - invokes ghc.exe with the added command-line
6 * option "--interactive".
8 * (c) The GHC Team 2001
10 * ghc.exe is searched for using the 'normal' search rules
11 * for DLLs / EXEs (i.e., first in the same dir as this wrapper,
12 * then system dirs, then PATH).
16 * MSVC: cl /o ghci.exe /c ghciwrap.c
17 * mingw: gcc -mno-cygwin -o ghci.exe ghciwrap.c
19 * If you want to associate your own icon with the wrapper,
20 * here's how to do it:
22 * * Create a one-line .rc file, ghci.rc (say), containing
24 * (subst the string literal for the name of your icon file).
25 * * Compile it up (assuming the .ico file is in the same dir
28 * MSVC: rc /I. ghci.rc /o ghci.res
29 * mingw: windres -o ghci.res -o ghci.rc -O coff
31 * * Add the resulting .res file to the link line of the wrapper:
33 * MSVC: cl /o ghci.exe /c ghciwrap.c ghci.res
34 * mingw: gcc -mno-cygwin -o ghci.exe ghciwrap.c ghci.res
43 #define BINARY_NAME "ghc.exe"
44 #define IACTIVE_OPTION "--interactive"
46 #define errmsg(msg) fprintf(stderr, msg "\n"); fflush(stderr)
49 main(int argc, char** argv)
51 TCHAR binPath[FILENAME_MAX+1];
52 DWORD dwSize = FILENAME_MAX;
58 /* Locate the binary we want to start up */
68 errmsg("Unable to locate ghc.exe");
72 new_argv = (char**)malloc(sizeof(char) * (argc + 1 + 1));
73 if (new_argv == NULL) {
74 errmsg("failed to start up ghc.exe");
77 new_argv[0] = binPath;
79 new_argv[1] = (char*)malloc(sizeof(char) * (strlen(IACTIVE_OPTION) + 1));
81 strcpy(new_argv[1], IACTIVE_OPTION);
83 errmsg("failed to start up ghc.exe");
87 for ( i=1; i < argc; i++ ) {
88 new_argv[i+1] = (char*)malloc(sizeof(char) * (strlen(argv[i] + 1)));
89 if (new_argv[i+1] == NULL) {
90 errmsg("failed to start up ghc.exe");
93 strcpy(new_argv[i+1], argv[i]);
98 /* I was hoping to be able to use execv() here, but
99 the MS implementation of said function doesn't appear to
100 be quite right (the 'parent' app seems to exit without
101 waiting, which is not a spec-fulfilling thing to do).
103 Cygwin gives me the right behaviour, but does it by
104 implementing it in terms of spawnv(), so you pay
105 the cost of having to create an extra process.
107 ==> Just use spawnv().
109 return _spawnv(_P_WAIT, binPath, new_argv);