tcc --help -v: cleanup

from e640ed1aeb

Also:
- cleanup -std, -O, -pthread
- tcc.h:win32: use win32-type include paths even for cross
  compilers (needed for loading tcc_predefs.h in cases)
- Makefile: simplify OSX .dylib clause

Makefile

@@ -236,8 +236,9 @@ libtcc.so: $(LIBTCC_OBJ)
 libtcc.so: CFLAGS+=-fPIC
 libtcc.so: LDFLAGS+=-fPIC
 
+# OSX dynamic libtcc library
 libtcc.dylib: $(LIBTCC_OBJ)
-	$(CC) -shared -o libtcc.dylib libtcc.o tccpp.o tccgen.o tccelf.o tccasm.o tccrun.o x86_64-gen.o x86_64-link.o i386-asm.o  -flat_namespace
+	$S$(CC) -shared -o $@ $^ $(LDFLAGS)
 
 # windows dynamic libtcc library
 libtcc.dll : $(LIBTCC_OBJ)

libtcc.c

@@ -986,6 +986,27 @@ LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
     if (s->char_is_unsigned)
         tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
 
+    if (s->cversion == 201112) {
+        tcc_undefine_symbol(s, "__STDC_VERSION__");
+        tcc_define_symbol(s, "__STDC_VERSION__", "201112L");
+        tcc_define_symbol(s, "__STDC_NO_ATOMICS__", NULL);
+        tcc_define_symbol(s, "__STDC_NO_COMPLEX__", NULL);
+        tcc_define_symbol(s, "__STDC_NO_THREADS__", NULL);
+#ifndef TCC_TARGET_PE
+        /* on Linux, this conflicts with a define introduced by
+           /usr/include/stdc-predef.h included by glibc libs
+        tcc_define_symbol(s, "__STDC_ISO_10646__", "201605L"); */
+        tcc_define_symbol(s, "__STDC_UTF_16__", NULL);
+        tcc_define_symbol(s, "__STDC_UTF_32__", NULL);
+#endif
+    }
+
+    if (s->optimize > 0)
+        tcc_define_symbol(s, "__OPTIMIZE__", NULL);
+
+    if (s->option_pthread)
+        tcc_define_symbol(s, "_REENTRANT", NULL);
+
     if (!s->nostdinc) {
         /* default include paths */
         /* -isystem paths have already been handled */
@@ -1719,13 +1740,11 @@ PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
     const TCCOption *popt;
     const char *optarg, *r;
     const char *run = NULL;
-    int last_o = -1;
     int x;
     CString linker_arg; /* collect -Wl options */
     int tool = 0, arg_start = 0, noaction = optind;
     char **argv = *pargv;
     int argc = *pargc;
-    int help = 0; /* remember if -h/--help has been seen */
 
     cstr_new(&linker_arg);
 
@@ -1776,13 +1795,11 @@ reparse:
 
         switch(popt->index) {
         case TCC_OPTION_HELP:
-            /* help is requested, postpone return to check for -v */
-            help = OPT_HELP;
-            break;
+            x = OPT_HELP;
+            goto extra_action;
         case TCC_OPTION_HELP2:
-            /* help is requested, postpone return to check for -v */
-            help = OPT_HELP2;
-            break;
+            x = OPT_HELP2;
+            goto extra_action;
         case TCC_OPTION_I:
             tcc_add_include_path(s, optarg);
             break;
@@ -1804,7 +1821,6 @@ reparse:
             s->nb_libraries++;
             break;
         case TCC_OPTION_pthread:
-            parse_option_D(s, "_REENTRANT");
             s->option_pthread = 1;
             break;
         case TCC_OPTION_bench:
@@ -1850,76 +1866,8 @@ reparse:
             s->static_link = 1;
             break;
         case TCC_OPTION_std:
-            if (*optarg == '=') {
-                if (strcmp(optarg, "=c11") == 0) {
-                    tcc_undefine_symbol(s, "__STDC_VERSION__");
-                    tcc_define_symbol(s, "__STDC_VERSION__", "201112L");
-                    /*
-                     * The integer constant 1, intended to indicate
-                     * that the implementation does not support atomic
-                     * types (including the _Atomic type qualifier) and
-                     * the <stdatomic.h> header.
-                     */
-                    tcc_define_symbol(s, "__STDC_NO_ATOMICS__", "1");
-                    /*
-                     * The integer constant 1, intended to indicate
-                     * that the implementation does not support complex
-                     * types or the <complex.h> header.
-                     */
-                    tcc_define_symbol(s, "__STDC_NO_COMPLEX__", "1");
-                    /*
-                     * The integer constant 1, intended to indicate
-                     * that the implementation does not support the
-                     * <threads.h> header.
-                     */
-                    tcc_define_symbol(s, "__STDC_NO_THREADS__", "1");
-                    /*
-                     * __STDC_NO_VLA__, tcc supports VLA.
-                     * The integer constant 1, intended to indicate
-                     * that the implementation does not support
-                     * variable length arrays or variably modified
-                     * types.
-                     */
-#if !defined(TCC_TARGET_PE)
-                    /*
-                     * An integer constant of the form yyyymmL (for
-                     * example, 199712L). If this symbol is defined,
-                     * then every character in the Unicode required
-                     * set, when stored in an object of type
-                     * wchar_t, has the same value as the short
-                     * identifier of that character.
-                     */
-                    #if 0
-                    /* on Linux, this conflicts with a define introduced by
-                     * /usr/include/stdc-predef.h included by glibc libs;
-                     * clang doesn't define it at all so it's probably not necessary
-                     */
-                    tcc_define_symbol(s, "__STDC_ISO_10646__", "201605L");
-                    #endif
-                    /*
-                     * The integer constant 1, intended to indicate
-                     * that values of type char16_t are UTF−16
-                     * encoded. If some other encoding is used, the
-                     * macro shall not be defined and the actual
-                     * encoding used is implementation defined.
-                     */
-                    tcc_define_symbol(s, "__STDC_UTF_16__", "1");
-                    /*
-                     * The integer constant 1, intended to indicate
-                     * that values of type char32_t are UTF−32
-                     * encoded. If some other encoding is used, the
-                     * macro shall not be defined and the actual
-                     * encoding used is implementationdefined.
-                     */
-                    tcc_define_symbol(s, "__STDC_UTF_32__", "1");
-#endif /* !TCC_TARGET_PE */
-                    s->cversion = 201112;
-                }
-            }
-            /*
-             * silently ignore other values, a current purpose:
-             * allow to use a tcc as a reference compiler for "make test"
-             */
+            if (strcmp(optarg, "=c11") == 0)
+                s->cversion = 201112;
             break;
         case TCC_OPTION_shared:
             x = TCC_OUTPUT_DLL;
@@ -2039,7 +1987,7 @@ reparse:
             s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
             break;
         case TCC_OPTION_O:
-            last_o = atoi(optarg);
+            s->optimize = atoi(optarg);
             break;
         case TCC_OPTION_print_search_dirs:
             x = OPT_PRINT_DIRS;
@@ -2068,16 +2016,6 @@ unsupported_option:
             break;
         }
     }
-
-    if (help) {
-       if (s->verbose > 0)
-           return OPT_VERBOSE_HELP;
-       else
-           return help;
-    }
-
-    if (last_o > 0)
-        tcc_define_symbol(s, "__OPTIMIZE__", NULL);
     if (linker_arg.size) {
         r = linker_arg.data;
         goto arg_err;

tcc.c

@@ -270,18 +270,14 @@ redo:
     if (n == 0) {
         if (opt == OPT_HELP) {
             fputs(help, stdout);
-            return 0;
+            if (!s->verbose)
+                return 0;
+            ++opt;
         }
         if (opt == OPT_HELP2) {
             fputs(help2, stdout);
             return 0;
         }
-        if (opt == OPT_VERBOSE_HELP) {
-            /* simulate gcc -v --help */
-            fputs(help, stdout);
-            fputs(help2, stdout);
-            return 0;
-        }
         if (opt == OPT_M32 || opt == OPT_M64)
             tcc_tool_cross(s, argv, opt); /* never returns */
         if (s->verbose)
@@ -316,9 +312,6 @@ redo:
                 tcc_error("cannot specify libraries with -c");
             if (s->nb_files > 1 && s->outfile)
                 tcc_error("cannot specify output file with -c many files");
-        } else {
-            if (s->option_pthread)
-                tcc_set_options(s, "-lpthread");
         }
 
         if (s->do_bench)

tcc.h

@@ -220,7 +220,7 @@ extern long double strtold (const char *__nptr, char **__endptr);
 
 /* system include paths */
 #ifndef CONFIG_TCC_SYSINCLUDEPATHS
-# ifdef TCC_TARGET_PE
+# if defined TCC_TARGET_PE || defined _WIN32
 #  define CONFIG_TCC_SYSINCLUDEPATHS "{B}/include"PATHSEP"{B}/include/winapi"
 # else
 #  define CONFIG_TCC_SYSINCLUDEPATHS \
@@ -697,12 +697,14 @@ struct TCCState {
     unsigned char rdynamic; /* if true, all symbols are exported */
     unsigned char symbolic; /* if true, resolve symbols in the current module first */
     unsigned char filetype; /* file type for compilation (NONE,C,ASM) */
+    unsigned char optimize; /* only to #define __OPTIMIZE__ */
+    unsigned char option_pthread; /* -pthread option */
+    unsigned char enable_new_dtags; /* -Wl,--enable-new-dtags */
     unsigned int  cversion; /* supported C ISO version, 199901 (the default), 201112, ... */
 
     char *tcc_lib_path; /* CONFIG_TCCDIR or -B option */
     char *soname; /* as specified on the command line (-soname) */
     char *rpath; /* as specified on the command line (-Wl,-rpath=) */
-    unsigned char enable_new_dtags; /* ditto, (-Wl,--enable-new-dtags) */
 
     /* output type, see TCC_OUTPUT_XXX */
     int output_type;
@@ -918,7 +920,6 @@ struct TCCState {
     unsigned char do_bench; /* option -bench */
     int gen_deps; /* option -MD  */
     char *deps_outfile; /* option -MF */
-    unsigned char option_pthread; /* -pthread option */
     int argc;
     char **argv;
 };
@@ -1285,7 +1286,6 @@ ST_FUNC char *normalize_slashes(char *path);
 #define OPT_PRINT_DIRS 4
 #define OPT_AR 5
 #define OPT_IMPDEF 6
-#define OPT_VERBOSE_HELP 7
 #define OPT_M32 32
 #define OPT_M64 64
 

tccelf.c

@@ -1417,6 +1417,8 @@ ST_FUNC void tcc_add_runtime(TCCState *s1)
     tcc_add_pragma_libs(s1);
     /* add libc */
     if (!s1->nostdlib) {
+        if (s1->option_pthread)
+            tcc_add_library_err(s1, "pthread");
         tcc_add_library_err(s1, "c");
 #ifdef TCC_LIBGCC
         if (!s1->static_link) {

tccpe.c

@@ -1996,6 +1996,7 @@ ST_FUNC int pe_output_file(TCCState *s1, const char *filename)
     memset(&pe, 0, sizeof pe);
     pe.filename = filename;
     pe.s1 = s1;
+    s1->filetype = 0;
 
 #ifdef CONFIG_TCC_BCHECK
     tcc_add_bcheck(s1);