X-Git-Url: https://git.exim.org/users/jgh/exim.git/blobdiff_plain/3634fc257bd0667daef14d72005cd87c735bbb24..b1c673ddfac7f322a62786cd4aae8b5b30ba69e8:/src/OS/Makefile-Linux?ds=sidebyside

diff --git a/src/OS/Makefile-Linux b/src/OS/Makefile-Linux
index 8b721410e..d1d501376 100644
--- a/src/OS/Makefile-Linux
+++ b/src/OS/Makefile-Linux
@@ -1,5 +1,9 @@
 # Exim: OS-specific make file for Linux. This is for modern Linuxes,
 # which use libc6.
+#
+# For Linux, we assume GNU Make; at time of writing, the only extension
+# used is ?= which is actually portable to other maintained Make variants,
+# just is not POSIX.
 
 HAVE_ICONV=yes
 
@@ -8,13 +12,19 @@ CHOWN_COMMAND=look_for_it
 CHGRP_COMMAND=look_for_it
 CHMOD_COMMAND=look_for_it
 
-CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
-CFLAGS_DYNAMIC=-shared -rdynamic
+# The system cc may be gcc or clang; do not force gcc
+CC=cc
+# Preserve CFLAGS and CFLAGS_DYNAMIC from the caller/environment
+CFLAGS ?= -O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
+CFLAGS_DYNAMIC ?= -shared -rdynamic
+
+# We have mmap/malloc addr spaces separate
+CFLAGS += -DTAINT_CHECK_FAST
 
 DBMLIB = -ldb
 USE_DB = yes
 
-LIBS = -lnsl -lcrypt -lm
+LIBS = -lcrypt -lm
 LIBRESOLV = -lresolv
 
 X11=/usr/X11R6