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Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 51ed83a7..4d0a4263 100644 --- a/configure.ac +++ b/configure.ac @@ -81,6 +81,29 @@ AS_IF([test "x$enable_ssp" != xno],[ CFLAGS="$save_CFLAGS" CXXFLAGS="$save_CXXFLAGS"])]) +AC_ARG_ENABLE([pie], + [AS_HELP_STRING([--disable-pie], [disable position-independent-executable])]) +AS_IF([test "x$enable_pie" != xno],[ + save_CFLAGS="$CFLAGS" + save_CXXFLAGS="$CXXFLAGS" + save_LDFLAGS="$LDFLAGS" + CFLAGS="$CFLAGS -fpie" + CXXFLAGS="$CXXFLAGS -fpie" + LDFLAGS="$LDFLAGS -pie -Wl,-z,relro -Wl,-z,now" + AC_LINK_IFELSE([void main () {}], [ + AC_MSG_NOTICE([Compiling with gcc pie et al.]) + # LDFLAGS is special since it may be passed down to bundled-elfutils, + # and interfere with the .so's built therein + PIELDFLAGS="$LDFLAGS -pie -Wl,-z,relro -Wl,-z,now" + LDFLAGS="$save_LDFLAGS" + ],[ + AC_MSG_NOTICE([Compiler does not support -pie et al.]) + CFLAGS="$save_CFLAGS" + CXXFLAGS="$save_CXXFLAGS" + PIELDFLAGS="" + LDFLAGS="$save_LDFLAGS"])]) +AC_SUBST(PIELDFLAGS) + dnl Handle optional sqlite support. If enabled/disabled by the user, dnl do the right thing. If not specified by the user, use it if dnl present. |