windows: Use a fixed worst-case WRITEFILE_MAX_SIZE.

[libserialport.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 90ea1d8f6e519b3086569038e2a86a57303fb58b..3baeaab2ab929d876d54f8dae146ed2572e3453e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -50,6 +50,19 @@ AC_PROG_CC
 AC_PROG_INSTALL
 AC_PROG_LN_S
 
+## SP_PROG_VERSION(program, sh-var)
+## Obtain the version of <program> and store it in <sh-var>.
+AC_DEFUN([SP_PROG_VERSION],
+[dnl
+m4_assert([$# >= 2])[]dnl
+sp_prog_ver=`$1 --version 2>&AS_MESSAGE_LOG_FD | sed 1q 2>&AS_MESSAGE_LOG_FD`
+AS_CASE([[$]?:$sp_prog_ver],
+        [[0:*[0-9].[0-9]*]], [$2=$sp_prog_ver],
+        [$2=unknown])[]dnl
+])
+
+SP_PROG_VERSION([$CC], [sp_cc_version])
+
 # Initialize libtool.
 LT_INIT
 
@@ -82,6 +95,9 @@ AM_CONDITIONAL([FREEBSD], [test -z "${host_os##freebsd*}"])
 AM_COND_IF([WIN32], [SP_LIBS='-lsetupapi'], [SP_LIBS=])
 AC_SUBST([SP_LIBS])
 
+AM_COND_IF([FREEBSD], [SP_PKGLIBS='libusb-2.0'], [SP_PKGLIBS=])
+AC_SUBST([SP_PKGLIBS])
+
 AM_COND_IF([MACOSX], [AC_CHECK_HEADER([IOKit/IOKitLib.h], [],
        [AC_MSG_ERROR([IOKit/IOKitLib.h not found])])])
 
@@ -110,6 +126,13 @@ AC_CHECK_DECLS([BOTHER],,, [[#include <linux/termios.h>]])
 # Check for serial_struct.
 AC_CHECK_TYPES([struct serial_struct],,, [[#include <linux/serial.h>]])
 
+# Check for realpath().
+AC_CHECK_FUNC([realpath], [AC_DEFINE(HAVE_REALPATH, 1, [realpath is available.])], [])
+
+# Check for clock_gettime().
+AC_CHECK_FUNC([clock_gettime],
+       [AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [clock_gettime is available.])], [])
+
 AC_CACHE_CHECK([for visibility control], [sp_cv_visibility_control], [
        sp_saved_CFLAGS=$CFLAGS
        CFLAGS="$CFLAGS -Werror"
@@ -145,4 +168,10 @@ libserialport configuration summary:
  - Building for.................... $host
  - Building shared / static........ $enable_shared / $enable_static
 
+Compile configuration:
+ - C compiler...................... $CC
+ - C compiler version.............. $sp_cc_version
+ - C compiler flags................ $CFLAGS
+ - Linker flags.................... $LDFLAGS
+
 _EOF