From: Todd C. Miller <Todd.Miller@courtesan.com>
Date: Mon, 30 Jan 2012 15:12:14 +0000 (-0500)
Subject: Add rudimentary check for _FORTIFY_SOURCE support by checking for
X-Git-Tag: SUDO_1_7_9~14
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b122e2ad20d3cc950bc4460a18cdaa6097ce8fb8;p=sudo

Add rudimentary check for _FORTIFY_SOURCE support by checking for
__sprintf_chk, one of the functions used by gcc to support it.

--HG--
branch : 1.7
---

diff --git a/configure b/configure
index 6595092cb..ec3b88bf0 100755
--- a/configure
+++ b/configure
@@ -16144,6 +16144,13 @@ fi
 fi
 done
 
+O_CPPFLAGS="$CPPFLAGS -D_FORTIFY_SOURCE=2"
+ac_fn_c_check_func "$LINENO" "__sprintf_chk" "ac_cv_func___sprintf_chk"
+if test "x$ac_cv_func___sprintf_chk" = xyes; then :
+  OSDEFS="${OSDEFS} -D_FORTIFY_SOURCE=2"
+fi
+
+CPPFLAGS="$O_CPPFLAGS"
 
 for ac_func in getutxid getutid
 do :
diff --git a/configure.in b/configure.in
index 430b98d04..47b6e3d38 100644
--- a/configure.in
+++ b/configure.in
@@ -2021,6 +2021,12 @@ AC_CHECK_FUNCS(setsid, [], [
     AC_LIBOBJ(setsid)
     AC_FUNC_SETPGRP
 ])
+dnl
+dnl If libc supports _FORTIFY_SOURCE check functions, use it.
+dnl
+O_CPPFLAGS="$CPPFLAGS -D_FORTIFY_SOURCE=2"
+AC_CHECK_FUNC(__sprintf_chk, [OSDEFS="${OSDEFS} -D_FORTIFY_SOURCE=2"], [])
+CPPFLAGS="$O_CPPFLAGS"
 
 AC_CHECK_FUNCS(getutxid getutid, [break])