From 7071cb42fa657e791d8084eff4d0978c5028bc9a Mon Sep 17 00:00:00 2001
From: nick black <dankamongmen@gmail.com>
Date: Wed, 20 Oct 2021 11:59:56 -0400
Subject: [PATCH] [cmake] add USE_ASAN option to build with addresssanitizer

---
 CMakeLists.txt | 6 ++++++
 INSTALL.md     | 1 +
 2 files changed, 7 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c1d2ef75d..2ecd88b84 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,6 +12,7 @@ include(FeatureSummary)
 ###################### USER-SELECTABLE OPTIONS ###########################
 # BUILD_TESTING is defined by CTest
 option(DFSG_BUILD "DFSG build (no non-free media/code)" OFF)
+option(USE_ASAN "Build with AddressSanitizer" OFF)
 option(USE_COVERAGE "Assess code coverage with llvm-cov/lcov" OFF)
 option(USE_CPP "Build C++ code" ON)
 cmake_dependent_option(
@@ -118,6 +119,11 @@ endif()
 add_compile_options(-Wall -Wextra -W -Wshadow)
 add_compile_options(-ffast-math -fexceptions -fstrict-aliasing)
 
+if(${USE_ASAN})
+add_compile_options(-fsanitize=address)
+add_link_options(-fsanitize=address)
+endif()
+
 # don't use REQUIRED with subsequent find_package() operations; we use
 # feature_summary + set_package_properties to fail in one fell swoop.
 find_package(Threads)
diff --git a/INSTALL.md b/INSTALL.md
index 86b063c45..b596db736 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -95,6 +95,7 @@ but must be `Debug` for use of `USE_COVERAGE`.
 * `DFSG_BUILD`: leave out all content considered non-free under the Debian Free
                 Software Guidelines
 * `BUILD_TESTING`: build test targets
+* `USE_ASAN`: build with AddressSanitizer
 * `USE_CPP`: build C++ code (requires a C++ compiler)
 * `USE_COVERAGE`: build coverage support (for developers, requires use of Clang)
 * `USE_DOCTEST`: build `notcurses-tester` with Doctest, requires `BUILD_TESTING`