X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=tools%2Fconfigurator%2Fconfigurator.c;h=e2c13b7e57161d004832e80af0a78b9a967f48d9;hp=b78b112f4a9f0b523de52a4b212bc12b17fa9fad;hb=2eff9a654f86ec238ddda60f928dccfcd0767645;hpb=00e61068e33e7883a2657744514452a32660d461

diff --git a/tools/configurator/configurator.c b/tools/configurator/configurator.c
index b78b112f..e2c13b7e 100644
--- a/tools/configurator/configurator.c
+++ b/tools/configurator/configurator.c
@@ -1,5 +1,26 @@
 /* Simple tool to create config.h.
- * Would be much easier with ccan modules, but deliberately standalone. */
+ * Would be much easier with ccan modules, but deliberately standalone.
+ *
+ * Copyright 2011 Rusty Russell <rusty@rustcorp.com.au>.  MIT license.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
 #include <stdio.h>
 #include <stdbool.h>
 #include <stdlib.h>
@@ -12,7 +33,7 @@
 #include <string.h>
 
 #define DEFAULT_COMPILER "cc"
-#define DEFAULT_FLAGS "-g -Wall -Wundef -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes -Wold-style-definition"
+#define DEFAULT_FLAGS "-g3 -ggdb -Wall -Wundef -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes -Wold-style-definition"
 
 #define OUTPUT_FILE "configurator.out"
 #define INPUT_FILE "configuratortest.c"
@@ -68,6 +89,12 @@ static struct test tests[] = {
 	  "static int __attribute__((unused)) func(int x) { return x; }" },
 	{ "HAVE_ATTRIBUTE_USED", OUTSIDE_MAIN, NULL,
 	  "static int __attribute__((used)) func(int x) { return x; }" },
+	{ "HAVE_BACKTRACE", DEFINES_FUNC, NULL,
+	  "#include <execinfo.h>\n"
+	  "static int func(int x) {"
+	  "	void *bt[10];\n"
+	  "	return backtrace(bt, 10) < x;\n"
+	  "}" },
 	{ "HAVE_BIG_ENDIAN", INSIDE_MAIN|EXECUTE, NULL,
 	  "union { int i; char c[sizeof(int)]; } u;\n"
 	  "u.i = 0x01020304;\n"
@@ -134,6 +161,13 @@ static struct test tests[] = {
 	  "static void *func(int fd) {\n"
 	  "	return mmap(0, 65536, PROT_READ, MAP_SHARED, fd, 0);\n"
 	  "}" },
+	{ "HAVE_PROC_SELF_MAPS", DEFINES_EVERYTHING|EXECUTE, NULL,
+	  "#include <sys/types.h>\n"
+	  "#include <sys/stat.h>\n"
+	  "#include <sys/fcntl.h>\n"
+	  "int main(void) {\n"
+	  "	return open(\"/proc/self/maps\", O_RDONLY) != -1 ? 0 : 1;\n"
+	  "}\n" },
 	{ "HAVE_QSORT_R_PRIVATE_LAST",
 	  DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE, NULL,
 	  "#define _GNU_SOURCE 1\n"
@@ -147,6 +181,13 @@ static struct test tests[] = {
 	  " qsort_r(array, 3, sizeof(int), cmp, &called);\n"
 	  " return called && array[0] == 2 && array[1] == 5 && array[2] == 9 ? 0 : 1;\n"
 	  "}\n" },
+	{ "HAVE_SECTION_START_STOP",
+	  DEFINES_FUNC, NULL,
+	  "static void *__attribute__((__section__(\"mysec\"))) p = &p;\n"
+	  "static int func(void) {\n"
+	  "	extern void *__start_mysec[], *__stop_mysec[];\n"
+	  "	return __stop_mysec - __start_mysec;\n"
+	  "}\n" },
 	{ "HAVE_STACK_GROWS_UPWARDS", DEFINES_EVERYTHING|EXECUTE, NULL,
 	  "static long nest(const void *base, unsigned int i)\n"
 	  "{\n"
@@ -394,7 +435,9 @@ int main(int argc, const char *argv[])
 	printf("/* Generated by CCAN configurator */\n"
 	       "#ifndef CCAN_CONFIG_H\n"
 	       "#define CCAN_CONFIG_H\n");
+	printf("#ifndef _GNU_SOURCE\n");
 	printf("#define _GNU_SOURCE /* Always use GNU extensions. */\n");
+	printf("#endif\n");
 	printf("#define CCAN_COMPILER \"%s\"\n", argv[1]);
 	printf("#define CCAN_CFLAGS \"%s\"\n\n", cmd + strlen(argv[1]) + 1);
 	for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++)