From 8b5d477aa820e52ed622c329933550c561ab1c93 Mon Sep 17 00:00:00 2001 From: Nicolai Hähnle Date: Mon, 3 Apr 2017 11:17:48 +0200 Subject: configure.ac: add --enable-sanitize option Enable code sanitizers by adding -fsanitize=$foo flags for the compiler and linker. In addition, this also disables checking for undefined symbols: running the address sanitizer requires additional symbols which should be provided by a preloaded libasan.so (preloaded for hooking into malloc & friends globally), and the undefined symbols check gets tripped up by that. Running the tests works normally via `make check`, but shows additional failures with the address sanitizer due to memory leaks that seem to be mostly leaks in the tests themselves. I believe those failures should really be fixed. In the mean-time, you can set export ASAN_OPTIONS=detect_leaks=0 to only check for more serious error types. v2: - fail reasonably when an unsupported sanitize flag is given (Eric Engestrom) Reviewed-by: Bartosz Tomczyk (v1) Reviewed-by: Eric Engestrom Reviewed-by: Emil Velikov --- configure.ac | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) diff --git a/configure.ac b/configure.ac index 7246c6017a2..957991cef7f 100644 --- a/configure.ac +++ b/configure.ac @@ -515,6 +515,12 @@ AC_ARG_ENABLE([profile], [enable_profile=no] ) +AC_ARG_ENABLE([sanitize], + [AS_HELP_STRING([--enable-sanitize@<:@=address|undefined@:>@], + [enable code sanitizer @<:@default=disabled@:>@])], + [enable_sanitize="$enableval"], + [enable_sanitize=no]) + if test "x$enable_profile" = xyes; then DEFINES="$DEFINES -DPROFILE" if test "x$GCC" = xyes; then @@ -550,6 +556,21 @@ else DEFINES="$DEFINES -DNDEBUG" fi +if test "x$enable_sanitize" != xno; then + if test "x$enable_profile" = xyes; then + AC_MSG_WARN([Sanitize and Profile are enabled at the same time]) + fi + + CFLAGS="$CFLAGS -fsanitize=$enable_sanitize" + CXXFLAGS="$CXXFLAGS -fsanitize=$enable_sanitize" + LDFLAGS="$LDFLAGS -fsanitize=$enable_sanitize" + + AC_LINK_IFELSE( + [AC_LANG_SOURCE([int main(){return 0;}])], + [], + [AC_MSG_FAILURE([sanitize flags '$enable_sanitize' not supported])]) +fi + dnl dnl Check if linker supports -Bsymbolic dnl @@ -590,7 +611,12 @@ case "$host_os" in openbsd* | darwin* ) LD_NO_UNDEFINED="" ;; *) - LD_NO_UNDEFINED="-Wl,--no-undefined" ;; + if test "x$enable_sanitize" = xno; then + LD_NO_UNDEFINED="-Wl,--no-undefined" + else + LD_NO_UNDEFINED="" + fi + ;; esac AC_SUBST([LD_NO_UNDEFINED]) -- cgit v1.2.3