Submitted By: Robert Connolly <robert at linuxfromscratch dot org> (ashes)
Date: 2005-02-03
Initial Package Version: 2.5.31
Upstream Status: Not submitted
Origin: None
Description: Check for gcc -fpie, -fpic, -fstack-protector, and ld -pie,
-z relro, -z now. Use whatever works. This is the autotools version. You
will need the macros to use this patch. See:
http://www.linuxfromscratch.org/~robert/Homogenic/
fpic.m4
fpie.m4
fstack.m4
relro.m4
now.m4

Then run:
aclocal -I /where/the/macros/are -I m4 &&
autoconf &&
automake -a

diff -Naur flex-2.5.31.orig/Makefile.am flex-2.5.31/Makefile.am
--- flex-2.5.31.orig/Makefile.am	2005-02-03 14:50:55.793973512 +0000
+++ flex-2.5.31/Makefile.am	2005-02-03 15:01:12.214749664 +0000
@@ -46,6 +46,9 @@
 
 bin_PROGRAMS = flex
 lib_LIBRARIES = libfl.a
+flex_CFLAGS = @FPIECFLAGS@ @SSPCFLAGS@
+flex_LDFLAGS = @PIELDFLAGS@ @RELROLDFLAGS@ @NOWLDFLAGS@
+libfl_a_CFLAGS = @SSPCFLAGS@ @FPICCFLAGS@
 
 flex_SOURCES = \
 	ccl.c \
diff -Naur flex-2.5.31.orig/configure.in flex-2.5.31/configure.in
--- flex-2.5.31.orig/configure.in	2005-02-03 14:50:55.808971232 +0000
+++ flex-2.5.31/configure.in	2005-02-03 15:01:12.213749816 +0000
@@ -40,6 +40,11 @@
 AC_PROG_CXX
 AC_PROG_LN_S
 AC_PROG_RANLIB
+_AC_PROG_CC_FPIE
+_AC_PROG_CC_FPIC
+_AC_PROG_CC_SSP
+_AC_PROG_CC_RELRO
+_AC_PROG_CC_NOW
 
 AC_PATH_PROG(BISON, bison,bison)
 AC_PATH_PROG(HELP2MAN, help2man, help2man)