From ff7f8557e34111883595827dc1f438bdf315df49 Mon Sep 17 00:00:00 2001
From: Daniel Patterson <daniel@mapbox.com>
Date: Mon, 2 Oct 2017 12:17:34 -0700
Subject: [PATCH] Workaround GLIBC 4.9 importing one useless (to us) symbol
 that causes a version update.

---
 .travis.yml                       |  8 ++++----
 include/util/glibc_workaround.hpp | 31 +++++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 4 deletions(-)
 create mode 100644 include/util/glibc_workaround.hpp

diff --git a/.travis.yml b/.travis.yml
index 272a4f87b..b53fc370d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -187,7 +187,7 @@ matrix:
         apt:
           sources: ['ubuntu-toolchain-r-test']
           packages: ['libstdc++-4.9-dev']
-      env: CLANG_VERSION='4.0.0' BUILD_TYPE='Release' ENABLE_MASON=ON ENABLE_LTO=ON JOBS=3
+      env: CLANG_VERSION='4.0.0' BUILD_TYPE='Release' ENABLE_MASON=ON ENABLE_LTO=ON JOBS=3 CXXFLAGS='-include util/glibc_workaround.hpp'
       install:
         - pushd ${OSRM_BUILD_DIR}
         - |
@@ -210,7 +210,7 @@ matrix:
         apt:
           sources: ['ubuntu-toolchain-r-test']
           packages: ['libstdc++-4.9-dev']
-      env: CLANG_VERSION='4.0.0' BUILD_TYPE='Debug' ENABLE_MASON=ON ENABLE_LTO=ON JOBS=3
+      env: CLANG_VERSION='4.0.0' BUILD_TYPE='Debug' ENABLE_MASON=ON ENABLE_LTO=ON JOBS=3 CXXFLAGS='-include util/glibc_workaround.hpp'
       install:
         - pushd ${OSRM_BUILD_DIR}
         - |
@@ -233,7 +233,7 @@ matrix:
         apt:
           sources: ['ubuntu-toolchain-r-test']
           packages: ['libstdc++-4.9-dev']
-      env: CLANG_VERSION='4.0.0' BUILD_TYPE='Release' ENABLE_MASON=ON ENABLE_LTO=ON JOBS=3 NODE="6"
+      env: CLANG_VERSION='4.0.0' BUILD_TYPE='Release' ENABLE_MASON=ON ENABLE_LTO=ON JOBS=3 NODE="6" CXXFLAGS='-include util/glibc_workaround.hpp'
       install:
         - pushd ${OSRM_BUILD_DIR}
         - |
@@ -256,7 +256,7 @@ matrix:
         apt:
           sources: ['ubuntu-toolchain-r-test']
           packages: ['libstdc++-4.9-dev']
-      env: CLANG_VERSION='4.0.0' BUILD_TYPE='Debug' ENABLE_MASON=ON ENABLE_LTO=ON JOBS=3 NODE="6"
+      env: CLANG_VERSION='4.0.0' BUILD_TYPE='Debug' ENABLE_MASON=ON ENABLE_LTO=ON JOBS=3 NODE="6" CXXFLAGS='-include util/glibc_workaround.hpp'
       install:
         - pushd ${OSRM_BUILD_DIR}
         - |
diff --git a/include/util/glibc_workaround.hpp b/include/util/glibc_workaround.hpp
new file mode 100644
index 000000000..e9d4daf8c
--- /dev/null
+++ b/include/util/glibc_workaround.hpp
@@ -0,0 +1,31 @@
+#ifndef GLIBC_WORKAROUND_H
+#define GLIBC_WORKAROUND_H
+
+// https://github.com/bitcoin/bitcoin/pull/4042
+// allows building against libstdc++-dev-4.9 while avoiding
+// GLIBCXX_3.4.20 dep
+// This is needed because libstdc++ itself uses this API - its not
+// just an issue of your code using it, ughhh
+
+// Note: only necessary on Linux
+#ifdef __linux__
+#define WORKAROUND
+#warning building with workaround
+#else
+#warning not building with workaround
+#endif
+
+#ifdef WORKAROUND
+namespace std
+{
+
+void __throw_out_of_range_fmt(const char *, ...) __attribute__((__noreturn__));
+void __throw_out_of_range_fmt(const char *err, ...)
+{
+    // Safe and over-simplified version. Ignore the format and print it as-is.
+    __throw_out_of_range(err);
+}
+}
+#endif // WORKAROUND
+
+#endif // GLIBC_WORKAROUND_H
\ No newline at end of file