Add libbacktrace and enable boost-stacktrace.

Author: oursland

recipe/meta.yaml

@@ -4,7 +4,7 @@
     "atomic", "charconv", "chrono", "cobalt", "container", "context", "contract", "coroutine",
     "date_time", "filesystem", "graph", "iostreams", "locale", "log", "log_setup",
     "math_c99", "math_c99f", "math_tr1", "math_tr1f", "prg_exec_monitor",
-    "program_options", "random", "regex", "serialization", "system", "thread",
+    "program_options", "random", "regex", "serialization", "stacktrace", "system", "thread",
     "timer", "type_erasure", "unit_test_framework", "wave", "wserialization"
 ] %}
 {% set boost_libs = boost_libs + ["math_c99l", "math_tr1l"] %}  # [not ppc64le]
@@ -28,7 +28,7 @@ source:
     - patches/0001-Add-default-value-for-cxx-and-cxxflags-options-for-t.patch
 
 build:
-  number: 0
+  number: 1
   script_env:
     - PY_DUMMY_VER={{ PY_DUMMY_VER }}
     - NP_DUMMY_VER={{ NP_DUMMY_VER }}
@@ -42,6 +42,7 @@ requirements:
     - numpy {{ NP_DUMMY_VER }}.*             # [build_platform != target_platform]
     - ruby *
   host:
+    - backtrace         # [unix]
     - icu               # [unix]
     - liblzma-devel     # [unix]
     - bzip2
@@ -102,6 +103,7 @@ outputs:
         - {{ compiler('cxx') }}
         - {{ stdlib('c') }}
       host:
+        - backtrace         # [unix]
         - icu               # [unix]
         - libiconv          # [win]
         - bzip2