Use autoconf to generate compiler options

Hopefully this means we'll break on fewer platforms.

Also, remove some of the extra optimization flags (e.g. -O3
-fomit-frame-pointer), which don't really do much.

1 files changed, 28 insertions, 1 deletions

diff --git a/configure.ac b/configure.ac
index b45655d..2957608 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,13 +1,40 @@
 #                                               -*- Autoconf -*-
+# PyCrypto's configure.ac file.
 # Process this file with autoconf to produce a configure script.
+#
+# The contents of this file are dedicated to the public domain.  To
+# the extent that dedication to the public domain is not available,
+# everyone is granted a worldwide, perpetual, royalty-free,
+# non-exclusive license to exercise all rights associated with the
+# contents of this file for any purpose whatsoever.
+# No rights are reserved.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
 
 AC_PREREQ([2.67])
 AC_INIT([FULL-PACKAGE-NAME], [VERSION], [BUG-REPORT-ADDRESS])
 AC_CONFIG_SRCDIR([src/pycrypto_compat.h])
 AC_CONFIG_HEADERS([src/config.h])
+AC_CONFIG_AUX_DIR([build-aux])
+AC_CONFIG_MACRO_DIR([m4])
+AC_CONFIG_FILES([buildenv])
+
+AM_INIT_AUTOMAKE([foreign no-define no-dist])
 
 # Checks for programs.
-AC_PROG_CC
+AC_PROG_CC_C99
+
+AX_CHECK_COMPILE_FLAG([-Wall], [AX_APPEND_FLAG([-Wall])])
+AX_CHECK_COMPILE_FLAG([-Wextra], [AX_APPEND_FLAG([-Wextra])])
+AX_CHECK_COMPILE_FLAG([-Wno-missing-field-initializers], [AX_APPEND_FLAG([-Wno-missing-field-initializers])])
+AX_CHECK_COMPILE_FLAG([-Wno-unused-parameter], [AX_APPEND_FLAG([-Wno-unused-parameter])])
 
 # Checks for libraries.
 AC_ARG_WITH([gmp], AS_HELP_STRING([--without-gmp], [Build without gmp library (default: test)]))