| /* Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define CHAZ_USE_SHORT_NAMES |
| |
| #include "Charmonizer/Core/HeaderChecker.h" |
| #include "Charmonizer/Core/ConfWriter.h" |
| #include "Charmonizer/Core/Util.h" |
| #include "Charmonizer/Probe/Headers.h" |
| #include <ctype.h> |
| #include <string.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdarg.h> |
| |
| /* Keep track of which headers have succeeded. */ |
| static int keeper_count = 0; |
| #define MAX_KEEPER_COUNT 200 |
| static const char *keepers[MAX_KEEPER_COUNT + 1] = { NULL }; |
| |
| /* Add a header to the keepers array. |
| */ |
| static void |
| S_keep(const char *header_name); |
| |
| static size_t aff_buf_size = 0; |
| static char *aff_buf = NULL; |
| |
| /* Transform "header.h" into "CHY_HAS_HEADER_H, storing the result in |
| * [aff_buf]. |
| */ |
| static void |
| S_encode_affirmation(const char *header_name); |
| |
| #define NUM_C89_HEADERS 15 |
| const char *c89_headers[] = { |
| "assert.h", |
| "ctype.h", |
| "errno.h", |
| "float.h", |
| "limits.h", |
| "locale.h", |
| "math.h", |
| "setjmp.h", |
| "signal.h", |
| "stdarg.h", |
| "stddef.h", |
| "stdio.h", |
| "stdlib.h", |
| "string.h", |
| "time.h", |
| NULL |
| }; |
| |
| #define NUM_POSIX_HEADERS 14 |
| const char *posix_headers[] = { |
| "cpio.h", |
| "dirent.h", |
| "fcntl.h", |
| "grp.h", |
| "pwd.h", |
| "sys/stat.h", |
| "sys/times.h", |
| "sys/types.h", |
| "sys/utsname.h", |
| "sys/wait.h", |
| "tar.h", |
| "termios.h", |
| "unistd.h", |
| "utime.h", |
| NULL |
| }; |
| |
| #define NUM_WIN_HEADERS 3 |
| const char *win_headers[] = { |
| "io.h", |
| "windows.h", |
| "process.h", |
| NULL |
| }; |
| |
| chaz_bool_t |
| Headers_check(const char *header_name) { |
| return HeadCheck_check_header(header_name); |
| } |
| |
| void |
| Headers_run(void) { |
| int i; |
| chaz_bool_t has_posix = false; |
| chaz_bool_t has_c89 = false; |
| |
| keeper_count = 0; |
| |
| ConfWriter_start_module("Headers"); |
| |
| /* Try for all POSIX headers in one blast. */ |
| if (HeadCheck_check_many_headers((const char**)posix_headers)) { |
| has_posix = true; |
| ConfWriter_append_conf("#define CHY_HAS_POSIX\n"); |
| for (i = 0; posix_headers[i] != NULL; i++) { |
| S_keep(posix_headers[i]); |
| } |
| } |
| /* Test one-at-a-time. */ |
| else { |
| for (i = 0; posix_headers[i] != NULL; i++) { |
| if (HeadCheck_check_header(posix_headers[i])) { |
| S_keep(posix_headers[i]); |
| } |
| } |
| } |
| |
| /* Test for all c89 headers in one blast. */ |
| if (HeadCheck_check_many_headers((const char**)c89_headers)) { |
| has_c89 = true; |
| ConfWriter_append_conf("#define CHY_HAS_C89\n"); |
| ConfWriter_append_conf("#define CHY_HAS_C90\n"); |
| for (i = 0; c89_headers[i] != NULL; i++) { |
| S_keep(c89_headers[i]); |
| } |
| } |
| /* Test one-at-a-time. */ |
| else { |
| for (i = 0; c89_headers[i] != NULL; i++) { |
| if (HeadCheck_check_header(c89_headers[i])) { |
| S_keep(c89_headers[i]); |
| } |
| } |
| } |
| |
| /* Test for all Windows headers in one blast */ |
| if (HeadCheck_check_many_headers((const char**)win_headers)) { |
| for (i = 0; win_headers[i] != NULL; i++) { |
| S_keep(win_headers[i]); |
| } |
| } |
| /* Test one-at-a-time. */ |
| else { |
| for (i = 0; win_headers[i] != NULL; i++) { |
| if (HeadCheck_check_header(win_headers[i])) { |
| S_keep(win_headers[i]); |
| } |
| } |
| } |
| |
| /* One-offs. */ |
| if (HeadCheck_check_header("pthread.h")) { |
| S_keep("pthread.h"); |
| } |
| |
| /* Append the config with every header detected so far. */ |
| for (i = 0; keepers[i] != NULL; i++) { |
| S_encode_affirmation(keepers[i]); |
| ConfWriter_append_conf("#define CHY_%s\n", aff_buf); |
| } |
| |
| /* Shorten. */ |
| ConfWriter_start_short_names(); |
| if (has_posix) { |
| ConfWriter_shorten_macro("HAS_POSIX"); |
| } |
| if (has_c89) { |
| ConfWriter_shorten_macro("HAS_C89"); |
| ConfWriter_shorten_macro("HAS_C90"); |
| } |
| for (i = 0; keepers[i] != NULL; i++) { |
| S_encode_affirmation(keepers[i]); |
| ConfWriter_shorten_macro(aff_buf); |
| } |
| ConfWriter_end_short_names(); |
| |
| ConfWriter_end_module(); |
| } |
| |
| static void |
| S_keep(const char *header_name) { |
| if (keeper_count >= MAX_KEEPER_COUNT) { |
| Util_die("Too many keepers -- increase MAX_KEEPER_COUNT"); |
| } |
| keepers[keeper_count++] = header_name; |
| keepers[keeper_count] = NULL; |
| } |
| |
| static void |
| S_encode_affirmation(const char *header_name) { |
| char *buf, *buf_end; |
| size_t len = strlen(header_name) + sizeof("HAS_"); |
| |
| /* Grow buffer and start off with "HAS_". */ |
| if (aff_buf_size < len + 1) { |
| free(aff_buf); |
| aff_buf_size = len + 1; |
| aff_buf = (char*)malloc(aff_buf_size); |
| } |
| strcpy(aff_buf, "HAS_"); |
| |
| /* Transform one char at a time. */ |
| for (buf = aff_buf + sizeof("HAS_") - 1, buf_end = aff_buf + len; |
| buf < buf_end; |
| header_name++, buf++ |
| ) { |
| if (*header_name == '\0') { |
| *buf = '\0'; |
| break; |
| } |
| else if (isalnum(*header_name)) { |
| *buf = toupper(*header_name); |
| } |
| else { |
| *buf = '_'; |
| } |
| } |
| } |
| |
| |
| |