Fixed a bug causing solc to crash on startup due to invalid environment settings for locale

lllc/main.cpp

@@ -22,6 +22,7 @@
 
 #include <fstream>
 #include <iostream>
+#include <clocale>
 #include <liblll/Compiler.h>
 #include <libdevcore/CommonIO.h>
 #include <libdevcore/CommonData.h>
@@ -52,10 +53,20 @@ void version()
 	exit(0);
 }
 
+void setEnv() {
+	std::setlocale(LC_ALL, "C");
+#if !defined(WIN32) && !defined(MAC_OSX) && !defined(__FreeBSD__) && !defined(__OpenBSD__)
+	if (!std::setlocale(LC_ALL, "")) {
+		setenv("LC_ALL", "C", 1);
+	}
+#endif
+}
+
 enum Mode { Binary, Hex, Assembly, ParseTree, Disassemble };
 
 int main(int argc, char** argv)
 {
+	setEnv();
 	unsigned optimise = 1;
 	string infile;
 	Mode mode = Hex;

scripts/install_deps.sh

@@ -326,16 +326,6 @@ case $(uname -s) in
                 sudo apt-get -y update
                 sudo apt-get -y install eth
 
-                # And install the English language package and reconfigure the locales.
-                # We really shouldn't need to do this, and should instead force our locales to "C"
-                # within our application runtimes, because this issue shows up on multiple Linux distros,
-                # and each will need fixing in the install steps, where we should really just fix it once
-                # in the code.
-                #
-                # See https://github.com/ethereum/webthree-umbrella/issues/169
-                sudo apt-get -y install language-pack-en-base
-                sudo dpkg-reconfigure locales
-
                 ;;
             *)
 

solc/main.cpp

@@ -21,13 +21,24 @@
  */
 
 #include "CommandLineInterface.h"
+#include <clocale>
 #include <iostream>
 #include <boost/exception/all.hpp>
 
 using namespace std;
 
+void setEnv() {
+	std::setlocale(LC_ALL, "C");
+#if !defined(WIN32) && !defined(MAC_OSX) && !defined(__FreeBSD__) && !defined(__OpenBSD__)
+	if (!std::setlocale(LC_ALL, "")) {
+		setenv("LC_ALL", "C", 1);
+	}
+#endif
+}
+
 int main(int argc, char** argv)
 {
+	setEnv();
 	dev::solidity::CommandLineInterface cli;
 	if (!cli.parseArguments(argc, argv))
 		return 1;