Merged a few fixes for non-posix systems from github.com/Siesh1oo/yosys

(see https://github.com/cliffordwolf/yosys/pull/28)

README

@@ -292,7 +292,7 @@ a recent version of gcc:
 This is a bug in the minisat header. It can be fixed by adding spaces before
 and after each occurrence of PRIi64 in the header file:
 
-	 sudo sed -i 's/PRIi64/ & /' /usr/include/minisat/utils/Options.h
+	 sudo sed -i -e 's/PRIi64/ & /' /usr/include/minisat/utils/Options.h
 
 
 Roadmap / Large-scale TODOs

frontends/vhdl2verilog/vhdl2verilog.cc

@@ -26,6 +26,8 @@
 #include <stdio.h>
 #include <string.h>
 #include <dirent.h>
+#include <errno.h>
+#include <limits.h>
 
 struct Vhdl2verilogPass : public Pass {
 	Vhdl2verilogPass() : Pass("vhdl2verilog", "importing VHDL designs using vhdl2verilog") { }
@@ -93,9 +95,12 @@ struct Vhdl2verilogPass : public Pass {
 			log_error("For some reason mkdtemp() failed!\n");
 
 		if (!out_file.empty() && out_file[0] != '/') {
-			char *pwd = get_current_dir_name();
+			char pwd [PATH_MAX];
+			if (!getcwd(pwd, sizeof(pwd))) {
+				log_cmd_error("getcwd failed: %s", strerror(errno));
+				log_abort();
+			}
 			out_file = pwd + ("/" + out_file);
-			free(pwd);
 		}
 
 		FILE *f = fopen(stringf("%s/files.list", tempdir_name).c_str(), "wt");
@@ -104,9 +109,12 @@ struct Vhdl2verilogPass : public Pass {
 			if (file.empty())
 				continue;
 			if (file[0] != '/') {
-				char *pwd = get_current_dir_name();
+				char pwd [PATH_MAX];
+				if (!getcwd(pwd, sizeof(pwd))) {
+					log_cmd_error("getcwd failed: %s", strerror(errno));
+					log_abort();
+				}
 				file = pwd + ("/" + file);
-				free(pwd);
 			}
 			fprintf(f, "%s\n", file.c_str());
 			log("Adding '%s' to the file list.\n", file.c_str());

kernel/driver.cc

@@ -24,6 +24,7 @@
 #include <unistd.h>
 #include <libgen.h>
 #include <dlfcn.h>
+#include <errno.h>
 
 #include <algorithm>
 

kernel/log.h

@@ -23,6 +23,8 @@
 #include "kernel/rtlil.h"
 #include <stdio.h>
 #include <time.h>
+#include <sys/time.h>
+#include <sys/resource.h>
 #include <vector>
 
 extern std::vector<FILE*> log_files;
@@ -65,9 +67,23 @@ struct PerformanceTimer
 	}
 
 	static int64_t query() {
+#if defined(_POSIX_TIMERS) && (_POSIX_TIMERS > 0)
 		struct timespec ts;
 		clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts);
 		return int64_t(ts.tv_sec)*1000000000 + ts.tv_nsec;
+#elif defined(RUSAGE_SELF)
+		struct rusage rusage;
+		int64_t t;
+		if (getrusage(RUSAGE_SELF, &rusage) == -1) {
+			log_cmd_error("getrusage failed!\n");
+			log_abort();
+		}
+		t = 1000000000ULL * (int64_t) rusage.ru_utime.tv_sec + (int64_t) rusage.ru_utime.tv_usec * 1000ULL;
+		t += 1000000000ULL * (int64_t) rusage.ru_stime.tv_sec + (int64_t) rusage.ru_stime.tv_usec * 1000ULL;
+		return t;
+#else
+	#error Dont know how to measure per-process CPU time. Need alternative method (times()/clocks()/gettimeofday()?).
+#endif
 	}
 
 	void reset() {

kernel/register.cc

@@ -23,6 +23,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <errno.h>
 
 using namespace REGISTER_INTERN;
 #define MAX_REG_COUNT 1000

libs/ezsat/ezminisat.cc

@@ -25,7 +25,7 @@
 
 #include <limits.h>
 #include <stdint.h>
-#include <signal.h>
+#include <csignal>
 #include <cinttypes>
 
 #include <minisat/core/Solver.h>
@@ -170,14 +170,18 @@ contradiction:
 #endif
 	}
 
-	sighandler_t old_alarm_sighandler = NULL;
+	struct sigaction sig_action;
+	struct sigaction old_sig_action;
 	int old_alarm_timeout = 0;
 
 	if (solverTimeout > 0) {
+		sig_action.sa_handler = alarmHandler;
+		sigemptyset(&sig_action.sa_mask);
+		sig_action.sa_flags = SA_RESTART;
 		alarmHandlerThis = this;
 		alarmHandlerTimeout = clock() + solverTimeout*CLOCKS_PER_SEC;
 		old_alarm_timeout = alarm(0);
-		old_alarm_sighandler = signal(SIGALRM, alarmHandler);
+		sigaction(SIGALRM, &sig_action, &old_sig_action);
 		alarm(1);
 	}
 
@@ -187,7 +191,7 @@ contradiction:
 		if (alarmHandlerTimeout == 0)
 			solverTimoutStatus = true;
 		alarm(0);
-		signal(SIGALRM, old_alarm_sighandler);
+		sigaction(SIGALRM, &old_sig_action, NULL);
 		alarm(old_alarm_timeout);
 	}
 

libs/ezsat/ezsat.cc

@@ -19,10 +19,11 @@
 
 #include "ezsat.h"
 
+#include <cmath>
 #include <algorithm>
+#include <cassert>
 
 #include <stdlib.h>
-#include <assert.h>
 
 const int ezSAT::TRUE = 1;
 const int ezSAT::FALSE = 2;

passes/abc/abc.cc

@@ -43,7 +43,9 @@
 #include <stdio.h>
 #include <string.h>
 #include <dirent.h>
+#include <cerrno>
 #include <sstream>
+#include <climits>
 
 #include "blifparse.h"
 
@@ -973,7 +975,11 @@ struct AbcPass : public Pass {
 		int lut_mode = 0;
 
 		size_t argidx;
-		char *pwd = get_current_dir_name();
+		char pwd [PATH_MAX];
+		if (!getcwd(pwd, sizeof(pwd))) {
+			log_cmd_error("getcwd failed: %s\n", strerror(errno));
+			log_abort();
+		}
 		for (argidx = 1; argidx < args.size(); argidx++) {
 			std::string arg = args[argidx];
 			if (arg == "-exe" && argidx+1 < args.size()) {
@@ -1020,7 +1026,6 @@ struct AbcPass : public Pass {
 			}
 			break;
 		}
-		free(pwd);
 		extra_args(args, argidx, design);
 
 		if (lut_mode != 0 && !liberty_file.empty())

passes/cmds/select.cc

@@ -23,6 +23,7 @@
 #include "kernel/log.h"
 #include <string.h>
 #include <fnmatch.h>
+#include <errno.h>
 
 using RTLIL::id2cstr;
 

passes/fsm/fsm_recode.cc

@@ -23,8 +23,9 @@
 #include "kernel/consteval.h"
 #include "kernel/celltypes.h"
 #include "fsmdata.h"
-#include "math.h"
+#include <math.h>
 #include <string.h>
+#include <errno.h>
 
 static void fm_set_fsm_print(RTLIL::Cell *cell, RTLIL::Module *module, FsmData &fsm_data, const char *prefix, FILE *f)
 {

passes/techmap/dfflibmap.cc

@@ -21,6 +21,7 @@
 #include "kernel/log.h"
 #include "libparse.h"
 #include <string.h>
+#include <errno.h>
 
 using namespace PASS_DFFLIBMAP;