windows: -no-undefined is required to make a DLL.

[libserialport.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 2df4865394e76b0e407aa7c76bdac726ee95c3b4..96d5277bb23a5204682365a0582ea2f04d823250 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -23,7 +23,7 @@ AC_PREREQ([2.63])
 
 # libserialport package version number (NOT the same as shared lib version!).
 m4_define([sp_package_version_major], [0])
-m4_define([sp_package_version_minor], [1])
+m4_define([sp_package_version_minor], [2])
 m4_define([sp_package_version_micro], [0])
 m4_define([sp_package_version], [sp_package_version_major.sp_package_version_minor.sp_package_version_micro])
 
@@ -39,8 +39,8 @@ AM_INIT_AUTOMAKE([1.11 -Wall -Werror check-news])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 
-# Enable more compiler warnings via -Wall and -Wextra.
-CFLAGS="$CFLAGS -Wall -Wextra"
+# Enable more compiler warnings.
+CFLAGS="$CFLAGS -std=c99 -Wall -Wextra -pedantic"
 
 # Checks for programs.
 AC_PROG_CC
@@ -119,6 +119,25 @@ AC_CHECK_MEMBERS([struct termios.c_ispeed, struct termios.c_ospeed],
 AC_CHECK_MEMBERS([struct termios2.c_ispeed, struct termios2.c_ospeed],
        [AC_DEFINE(HAVE_TERMIOS2_SPEED, 1)], [], [[#include <linux/termios.h>]])
 
+# Check for serial_struct.
+AC_CHECK_TYPE([struct serial_struct], [AC_DEFINE(HAVE_SERIAL_STRUCT, 1)],
+        [], [[#include <linux/serial.h>]])
+
+saved="$CFLAGS"; CFLAGS="$CFLAGS -Werror"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+               __attribute__((visibility("hidden"))) void foo(void) { }
+       ]])],
+       [AC_DEFINE(SP_API , __attribute__((visibility("default"))))]
+       [AC_DEFINE(SP_PRIV, __attribute__((visibility("hidden"))))],
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+               __declspec(dllexport) void foo(void) { }
+       ]])],
+       [AC_DEFINE(SP_API , __declspec(dllexport))]
+       [AC_DEFINE(SP_PRIV,)],
+       [AC_DEFINE(SP_API,)]
+       [AC_DEFINE(SP_PRIV,)]))
+CFLAGS="$saved"
+
 AC_SUBST(MAKEFLAGS, '--no-print-directory')
 AC_SUBST(AM_LIBTOOLFLAGS, '--silent')