summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--configure.ac6
-rw-r--r--m4/gcc_version.m438
2 files changed, 43 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index bdbf6d9..8970211 100644
--- a/configure.ac
+++ b/configure.ac
@@ -70,7 +70,11 @@ AC_ARG_ENABLE([address-sanitization],
[bad value ${enableval} for address-sanitization option]
);;
esac],
- [address_sanitization=no]
+ [
+ address_sanitization=no
+ gl_GCC_VERSION_IFELSE([4], [8],
+ [test -d "${srcdir}/.git" && address_sanitization=yes])
+ ]
)
if test "x${address_sanitization}" = 'xyes'; then
AX_CHECK_COMPILE_FLAG([-fsanitize=address],
diff --git a/m4/gcc_version.m4 b/m4/gcc_version.m4
new file mode 100644
index 0000000..9e16450
--- /dev/null
+++ b/m4/gcc_version.m4
@@ -0,0 +1,38 @@
+dnl Copied from GNU Coreutils configure.ac
+dnl
+dnl The 17 lines are probably too trivial to be copyrightable, but just in case:
+dnl
+dnl Copyright (C) 1991-2017 Free Software Foundation, Inc.
+dnl
+dnl This program is free software: you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation, either version 3 of the License, or
+dnl (at your option) any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+dnl GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program. If not, see <https://www.gnu.org/licenses/>.
+dnl
+dnl Written by Jim Meyering.
+
+# gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
+# ------------------------------------------------
+# If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
+# Otherwise, run RUN-IF-NOT-FOUND.
+AC_DEFUN([gl_GCC_VERSION_IFELSE],
+ [AC_PREPROC_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+#if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
+/* ok */
+#else
+# error "your version of gcc is older than $1.$2"
+#endif
+ ]]),
+ ], [$3], [$4])
+ ]
+)