From ba73ab71fa4df14cbf55bf4111c791eea21a85c8 Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@fe.uni-lj.si>
Date: Fri, 27 May 2016 08:20:01 +0000
Subject: [PATCH] Added some basic help on flags. Unformatted.

---
 configure.ac |   41 +++++++++++++++++++++++++++++++++++------
 1 files changed, 35 insertions(+), 6 deletions(-)

diff --git a/configure.ac b/configure.ac
index 2c4ec30..09b04d8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,26 +1,55 @@
 #                                               -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
-AC_PREREQ([2.50])
+AC_PREREQ([2.67])
 AC_INIT([FULL-PACKAGE-NAME], [VERSION], [BUG-REPORT-ADDRESS])
-AM_INIT_AUTOMAKE
 AC_CONFIG_SRCDIR([config.h.in])
 AC_CONFIG_HEADERS([config.h])
-
+AM_INIT_AUTOMAKE
 # Checks for programs.
 AC_PROG_CC
 
 # Checks for libraries.
+# FIXME: Replace `main' with a function in `-lconfuse':
+AC_CHECK_LIB([confuse], [cfg_parse])
+# FIXME: Replace `main' with a function in `-lm':
+AC_CHECK_LIB([m], [pow])
+
+AC_CHECK_LIB([gslcblas],[cblas_dgemm])
+AC_CHECK_LIB([gsl],[gsl_blas_dgemm])
+#AC_CHECK_LIB([xml2],[xmlNodeListGetString])
+PKG_CHECK_MODULES([libxml2], [libxml-2.0])
+AC_CHECK_LIB([z],[deflate])
 
 # Checks for header files.
-AC_CHECK_HEADERS([stdlib.h])
+AC_CHECK_HEADERS([stdlib.h string.h])
 
 # Checks for typedefs, structures, and compiler characteristics.
+AC_C_INLINE
+
+dnl Check if we have enable debug support.
+AC_MSG_CHECKING(whether to enable debugging)
+debug_default="yes"
+AC_ARG_ENABLE(debug, [ --enable-debug=[no/yes] turn on debugging
+[default=$debug_default]],, enable_debug=$debug_default)
+dnl Yes, shell scripts can be used
+if test "x$enable_debug" = "xyes"; then
+CFLAGS="-g -O2 -DDEBUG"
+AC_MSG_RESULT(yes)
+else
+CFLAGS="-O3 -ffast-math"
+AC_MSG_RESULT(no)
+fi
+
+#AC_DEFINE_UNQUOTED(TS_VERSION,
+#                    ["Trisurf (commit `git describe  --abbrev=6 --dirty --always --tags`) build on `date` @`hostname`."],
+#                    [A string containing the version number])
 
 # Checks for library functions.
 AC_FUNC_MALLOC
+AC_FUNC_REALLOC
+AC_CHECK_FUNCS([pow sqrt strndup])
 
 AC_CONFIG_FILES([Makefile
-                 src/Makefile
-                 test/Makefile])
+                 src/Makefile])
 AC_OUTPUT

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