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fix SIGCHLD handling

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[[Split portion of a mixed commit.]]

From-SVN: r40331.2
This commit is contained in:
Bruce Korb 2001-03-08 23:31:04 +00:00
parent 0bf679a364
commit 4c7bb72eb0
1 changed files with 36 additions and 75 deletions
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gcc/gcc.c
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@ -32,44 +32,6 @@ CC recognizes how to compile each input file by suffixes in the file names.
Once it knows which kind of compilation to perform, the procedure for Once it knows which kind of compilation to perform, the procedure for
compilation is specified by a string called a "spec". */ compilation is specified by a string called a "spec". */
/* A Short Introduction to Adding a Command-Line Option.
Before adding a command-line option, consider if it is really
necessary. Each additional command-line option adds complexity and
is difficult to remove in subsequent versions.
In the following, consider adding the command-line argument
`--bar'.
1. Each command-line option is specified in the specs file. The
notation is described below in the comment entitled "The Specs
Language". Read it.
2. In this file, add an entry to "option_map" equating the long
`--' argument version and any shorter, single letter version. Read
the comments in the declaration of "struct option_map" for an
explanation. Do not omit the first `-'.
3. Look in the "specs" file to determine which program or option
list should be given the argument, e.g., "cc1_options". Add the
appropriate syntax for the shorter option version to the
corresponding "const char *" entry in this file. Omit the first
`-' from the option. For example, use `-bar', rather than `--bar'.
4. If the argument takes an argument, e.g., `--baz argument1',
modify either DEFAULT_SWITCH_TAKES_ARG or
DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
from `--baz'.
5. Document the option in this file's display_help(). If the
option is passed to a subprogram, modify its corresponding
function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
instead.
6. Compile and test. Make sure that your new specs file is being
read. For example, use a debugger to investigate the value of
"specs_file" in main(). */
#include "config.h" #include "config.h"
#include "system.h" #include "system.h"
#include <signal.h> #include <signal.h>
@ -271,6 +233,7 @@ static void add_prefix PARAMS ((struct path_prefix *, const char *,
const char *, int, int, int *)); const char *, int, int, int *));
static void translate_options PARAMS ((int *, const char *const **)); static void translate_options PARAMS ((int *, const char *const **));
static char *skip_whitespace PARAMS ((char *)); static char *skip_whitespace PARAMS ((char *));
static void record_temp_file PARAMS ((const char *, int, int));
static void delete_if_ordinary PARAMS ((const char *)); static void delete_if_ordinary PARAMS ((const char *));
static void delete_temp_files PARAMS ((void)); static void delete_temp_files PARAMS ((void));
static void delete_failure_queue PARAMS ((void)); static void delete_failure_queue PARAMS ((void));
@ -288,9 +251,12 @@ static int used_arg PARAMS ((const char *, int));
static int default_arg PARAMS ((const char *, int)); static int default_arg PARAMS ((const char *, int));
static void set_multilib_dir PARAMS ((void)); static void set_multilib_dir PARAMS ((void));
static void print_multilib_info PARAMS ((void)); static void print_multilib_info PARAMS ((void));
static void pfatal_with_name PARAMS ((const char *)) ATTRIBUTE_NORETURN;
static void perror_with_name PARAMS ((const char *)); static void perror_with_name PARAMS ((const char *));
static void pfatal_pexecute PARAMS ((const char *, const char *)) static void pfatal_pexecute PARAMS ((const char *, const char *))
ATTRIBUTE_NORETURN; ATTRIBUTE_NORETURN;
static void error PARAMS ((const char *, ...))
ATTRIBUTE_PRINTF_1;
static void notice PARAMS ((const char *, ...)) static void notice PARAMS ((const char *, ...))
ATTRIBUTE_PRINTF_1; ATTRIBUTE_PRINTF_1;
static void display_help PARAMS ((void)); static void display_help PARAMS ((void));
@ -306,9 +272,7 @@ static void init_gcc_specs PARAMS ((struct obstack *,
const char *, const char *,
const char *)); const char *));
/* The Specs Language /* Specs are strings containing lines, each of which (if not blank)
Specs are strings containing lines, each of which (if not blank)
is made up of a program name, and arguments separated by spaces. is made up of a program name, and arguments separated by spaces.
The program name must be exact and start from root, since no path The program name must be exact and start from root, since no path
is searched and it is unreliable to depend on the current working directory. is searched and it is unreliable to depend on the current working directory.
@ -655,7 +619,7 @@ static const char *cc1_options =
%{aux-info*} %{Qn:-fno-ident} %{--help:--help}\ %{aux-info*} %{Qn:-fno-ident} %{--help:--help}\
%{--target-help:--target-help}\ %{--target-help:--target-help}\
%{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\ %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
%{fsyntax-only:-o %j} %{-param*}"; %{fsyntax-only:-o %j}";
static const char *asm_options = static const char *asm_options =
"%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}"; "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
@ -710,8 +674,7 @@ static struct user_specs *user_specs_head, *user_specs_tail;
|| !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \ || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
|| !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \ || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
|| !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \ || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
|| !strcmp (STR, "isystem") || !strcmp (STR, "-param") \ || !strcmp (STR, "isystem") || !strcmp (STR, "specs") \
|| !strcmp (STR, "specs") \
|| !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ")) || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
#ifndef WORD_SWITCH_TAKES_ARG #ifndef WORD_SWITCH_TAKES_ARG
@ -766,20 +729,19 @@ static struct compiler default_compilers[] =
were not present when we built the driver, we will hit these copies were not present when we built the driver, we will hit these copies
and be given a more meaningful error than "file not used since and be given a more meaningful error than "file not used since
linking is not done". */ linking is not done". */
{".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0}, {".m", "#Objective-C"}, {".mi", "#Objective-C"},
{".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0}, {".cc", "#C++"}, {".cxx", "#C++"}, {".cpp", "#C++"}, {".cp", "#C++"},
{".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0}, {".c++", "#C++"}, {".C", "#C++"}, {".ii", "#C++"},
{".ii", "#C++", 0}, {".ads", "#Ada"}, {".adb", "#Ada"}, {".ada", "#Ada"},
{".ads", "#Ada", 0}, {".adb", "#Ada", 0}, {".ada", "#Ada", 0}, {".f", "#Fortran"}, {".for", "#Fortran"}, {".fpp", "#Fortran"},
{".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0}, {".F", "#Fortran"}, {".FOR", "#Fortran"}, {".FPP", "#Fortran"},
{".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0}, {".r", "#Ratfor"},
{".r", "#Ratfor", 0}, {".p", "#Pascal"}, {".pas", "#Pascal"},
{".p", "#Pascal", 0}, {".pas", "#Pascal", 0}, {".ch", "#Chill"}, {".chi", "#Chill"},
{".ch", "#Chill", 0}, {".chi", "#Chill", 0}, {".java", "#Java"}, {".class", "#Java"},
{".java", "#Java", 0}, {".class", "#Java", 0}, {".zip", "#Java"}, {".jar", "#Java"},
{".zip", "#Java", 0}, {".jar", "#Java", 0},
/* Next come the entries for C. */ /* Next come the entries for C. */
{".c", "@c", 0}, {".c", "@c"},
{"@c", {"@c",
/* cc1 has an integrated ISO C preprocessor. We should invoke the /* cc1 has an integrated ISO C preprocessor. We should invoke the
external preprocessor if -save-temps or -traditional is given. */ external preprocessor if -save-temps or -traditional is given. */
@ -794,27 +756,27 @@ static struct compiler default_compilers[] =
cc1 -fpreprocessed %{!pipe:%g.i} %(cc1_options)}\ cc1 -fpreprocessed %{!pipe:%g.i} %(cc1_options)}\
%{!traditional:%{!ftraditional:%{!traditional-cpp:\ %{!traditional:%{!ftraditional:%{!traditional-cpp:\
cc1 -lang-c %{ansi:-std=c89} %(cpp_options) %(cc1_options)}}}}\ cc1 -lang-c %{ansi:-std=c89} %(cpp_options) %(cc1_options)}}}}\
%{!fsyntax-only:%(invoke_as)}}}}", 0}, %{!fsyntax-only:%(invoke_as)}}}}"},
{"-", {"-",
"%{!E:%e-E required when input is from standard input}\ "%{!E:%e-E required when input is from standard input}\
%(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0}, %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)"},
{".h", "@c-header", 0}, {".h", "@c-header"},
{"@c-header", {"@c-header",
"%{!E:%eCompilation of header file requested} \ "%{!E:%eCompilation of header file requested} \
%(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0}, %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)"},
{".i", "@cpp-output", 0}, {".i", "@cpp-output"},
{"@cpp-output", {"@cpp-output",
"%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0}, "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}"},
{".s", "@assembler", 0}, {".s", "@assembler"},
{"@assembler", {"@assembler",
"%{!M:%{!MM:%{!E:%{!S:as %(asm_options) %i %A }}}}", 0}, "%{!M:%{!MM:%{!E:%{!S:as %(asm_options) %i %A }}}}"},
{".S", "@assembler-with-cpp", 0}, {".S", "@assembler-with-cpp"},
{"@assembler-with-cpp", {"@assembler-with-cpp",
"%(trad_capable_cpp) -lang-asm %(cpp_options)\ "%(trad_capable_cpp) -lang-asm %(cpp_options)\
%{!M:%{!MM:%{!E:%(invoke_as)}}}", 0}, %{!M:%{!MM:%{!E:%(invoke_as)}}}"},
#include "specs.h" #include "specs.h"
/* Mark end of table */ /* Mark end of table */
{0, 0, 0} {0, 0}
}; };
/* Number of elements in default_compilers, not counting the terminator. */ /* Number of elements in default_compilers, not counting the terminator. */
@ -901,7 +863,6 @@ struct option_map option_map[] =
{"--optimize", "-O", "oj"}, {"--optimize", "-O", "oj"},
{"--output", "-o", "a"}, {"--output", "-o", "a"},
{"--output-class-directory", "-foutput-class-dir=", "ja"}, {"--output-class-directory", "-foutput-class-dir=", "ja"},
{"--param", "--param", "a"},
{"--pedantic", "-pedantic", 0}, {"--pedantic", "-pedantic", 0},
{"--pedantic-errors", "-pedantic-errors", 0}, {"--pedantic-errors", "-pedantic-errors", 0},
{"--pipe", "-pipe", 0}, {"--pipe", "-pipe", 0},
@ -1915,7 +1876,7 @@ static struct temp_file *failure_delete_queue;
FAIL_DELETE nonzero means delete it if a compilation step fails; FAIL_DELETE nonzero means delete it if a compilation step fails;
otherwise delete it in any case. */ otherwise delete it in any case. */
void static void
record_temp_file (filename, always_delete, fail_delete) record_temp_file (filename, always_delete, fail_delete)
const char *filename; const char *filename;
int always_delete; int always_delete;
@ -2959,9 +2920,9 @@ display_help ()
"), stdout); "), stdout);
printf (_("\ printf (_("\
\nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\ \nOptions starting with -g, -f, -m, -O or -W are automatically passed on to\n\
passed on to the various sub-processes invoked by %s. In order to pass\n\ the various sub-processes invoked by %s. In order to pass other options\n\
other options on to these processes the -W<letter> options must be used.\n\ on to these processes the -W<letter> options must be used.\n\
"), programname); "), programname);
/* The rest of the options are displayed by invocations of the various /* The rest of the options are displayed by invocations of the various
@ -6064,7 +6025,7 @@ save_string (s, len)
return result; return result;
} }
void static void
pfatal_with_name (name) pfatal_with_name (name)
const char *name; const char *name;
{ {
@ -6132,7 +6093,7 @@ fatal VPARAMS ((const char *msgid, ...))
exit (1); exit (1);
} }
void static void
error VPARAMS ((const char *msgid, ...)) error VPARAMS ((const char *msgid, ...))
{ {
#ifndef ANSI_PROTOTYPES #ifndef ANSI_PROTOTYPES