Add library search path

Author: CodaFi

.travis.yml

@@ -25,7 +25,10 @@ matrix:
         - wget -O - http://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
         - sudo apt-add-repository "deb http://apt.llvm.org/trusty/ llvm-toolchain-trusty-3.9 main"
         - sudo apt-get update
-        - sudo apt-get install llvm-${LLVM_API_VERSION}
+        - sudo apt-get install llvm-${LLVM_API_VERSION} libc++1
+        # Move libC++ into place
+        - sudo cp /usr/lib/x86_64-linux-gnu/libc++.so.1.0 /usr/lib/
+        - sudo ln -sf /usr/lib/libc++.so.1.0 /usr/lib/libc++.so
         # Work around pre-installed clang
         - sudo rm -rf /usr/local/clang-*/bin/llvm-config
         - ls -l /usr/bin/llvm-config*

Tests/LinuxMain.swift

@@ -4,6 +4,6 @@ import XCTest
 
 #if !os(macOS)
 XCTMain([
-	IRBuilderSpec.allTests,
+  IRBuilderSpec.allTests,
 ])
 #endif

utils/make-pkgconfig.swift

@@ -3,7 +3,7 @@ import Foundation
 
 #if os(Linux)
   typealias Process = Task
-  let libCPP = "-lc++"
+  let libCPP = "-L/usr/lib -lc++"
 #elseif os(macOS)
   let libCPP = "-lc++"
 #endif