diff options
Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index ccfecff28..9ab684877 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -2,6 +2,7 @@ dnl Helper macros for Tor configure.in dnl Copyright (c) 2001-2004, Roger Dingledine dnl Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson dnl Copyright (c) 2007-2008, Roger Dingledine, Nick Mathewson +dnl Copyright (c) 2007-2012, The Tor Project, Inc. dnl See LICENSE for licensing information AC_DEFUN([TOR_EXTEND_CODEPATH], @@ -41,6 +42,51 @@ AC_DEFUN([TOR_DEFINE_CODEPATH], AC_SUBST(TOR_LDFLAGS_$2) ]) +dnl 1:flags +AC_DEFUN([TOR_CHECK_CFLAGS], [ + AS_VAR_PUSHDEF([VAR],[tor_cv_cflags_$1]) + AC_CACHE_CHECK([whether the compiler accepts $1], VAR, [ + tor_saved_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -pedantic -Werror $1" + AC_TRY_COMPILE([], [return 0;], + [AS_VAR_SET(VAR,yes)], + [AS_VAR_SET(VAR,no)]) + CFLAGS="$tor_saved_CFLAGS" + ]) + if test x$VAR = xyes; then + CFLAGS="$CFLAGS $1" + fi + AS_VAR_POPDEF([VAR]) +]) + +dnl 1:flags +dnl 2:extra ldflags +dnl 3:extra libraries +AC_DEFUN([TOR_CHECK_LDFLAGS], [ + AS_VAR_PUSHDEF([VAR],[tor_cv_ldflags_$1]) + AC_CACHE_CHECK([whether the linker accepts $1], VAR, [ + tor_saved_CFLAGS="$CFLAGS" + tor_saved_LDFLAGS="$LDFLAGS" + tor_saved_LIBS="$LIBS" + CFLAGS="$CFLAGS -pedantic -Werror" + LDFLAGS="$LDFLAGS $2 $1" + LIBS="$LIBS $3" + AC_RUN_IFELSE([AC_LANG_PROGRAM([#include <stdio.h>], [fputs("", stdout)])], + [AS_VAR_SET(VAR,yes)], + [AS_VAR_SET(VAR,no)], + [AC_TRY_LINK([], [return 0;], + [AS_VAR_SET(VAR,yes)], + [AS_VAR_SET(VAR,no)])]) + CFLAGS="$tor_saved_CFLAGS" + LDFLAGS="$tor_saved_LDFLAGS" + LIBS="$tor_saved_LIBS" + ]) + if test x$VAR = xyes; then + LDFLAGS="$LDFLAGS $1" + fi + AS_VAR_POPDEF([VAR]) +]) + dnl 1:libname AC_DEFUN([TOR_WARN_MISSING_LIB], [ h="" |