Add an option to skip all of the slow configure checks

Cuts the total runtime of the configure script from 19 seconds to 5
seconds for me.

aegisub/configure.ac

@@ -188,6 +188,9 @@ AS_IF([test x$with_libc__ != xno], [
 AC_CHECK_LIB([m], [main])
 AC_CHECK_HEADERS([sys/time.h])
 
+AC_ARG_ENABLE(sanity-checks,
+              AS_HELP_STRING([--disable-sanity-checks],[Skip verifying that found libraries work.]))
+
 ##############################
 # Program Support and Features
 ##############################
@@ -223,7 +226,7 @@ PKG_CHECK_MODULES(ICU_I18N, icu-i18n >= icu_required_version)
 ########
 ## boost
 ########
-AS_IF([test x$enable_slow_wx_checks != xno], [
+AS_IF([test x$enable_sanity_checks != xno], [
   AC_AGI_COMPILE([boost ICU support], [boost_icu], [$BOOST_CPPFLAGS],
                  [$BOOST_LDFLAGS $BOOST_REGEX_LIB $ICU_UC_LIBS $ICU_I18N_LIBS],[
   #include <boost/regex/icu.hpp>
@@ -431,10 +434,7 @@ AC_SUBST(WX_CONFIG_PATH)
 AS_IF([test x$WX_VERSION = x],
   [AC_MSG_FAILURE([wxWidgets detection failed, please set --with-wx* or add the libraries to your LIBS, CXX/CFLAGS.])])
 
-AC_ARG_ENABLE(slow-wx-checks,
+AS_IF([test x$enable_sanity_checks != xno], [
-              AS_HELP_STRING([--disable-slow-wx-checks],[Disable slow-running checks for wx components.]))
-
-AS_IF([test x$enable_slow_wx_checks != xno], [
   AC_AGI_LINK([wxWidgets OpenGL support], [wxopengl], [wx/glcanvas.h], [$GL_CFLAGS $WX_CFLAGS], [$GL_LIBS $WX_LIBS],[
 #include <wx/glcanvas.h>
 int main(void) {

aegisub/m4macros/ax_boost_asio.m4

@@ -62,6 +62,7 @@ AC_DEFUN([AX_BOOST_ASIO],
 		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
 		export LDFLAGS
 
+		AS_IF([test x$enable_sanity_checks != xno], [
         AC_CACHE_CHECK(whether the Boost::ASIO library is available,
 					   ax_cv_boost_asio,
         [AC_LANG_PUSH([C++])
@@ -79,6 +80,7 @@ AC_DEFUN([AX_BOOST_ASIO],
                              ax_cv_boost_asio=yes, ax_cv_boost_asio=no)
          AC_LANG_POP([C++])
 		])
+		], [ax_cv_boost_asio=yes])
 		if test "x$ax_cv_boost_asio" = "xyes"; then
 			AC_DEFINE(HAVE_BOOST_ASIO,,[define if the Boost::ASIO library is available])
 			BN=boost_system

aegisub/m4macros/ax_boost_chrono.m4

@@ -62,6 +62,7 @@ AC_DEFUN([AX_BOOST_CHRONO],
 		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
 		export LDFLAGS
 
+		AS_IF([test x$enable_sanity_checks != xno], [
         AC_CACHE_CHECK(whether the Boost::Chrono library is available,
 					   ax_cv_boost_chrono,
         [AC_LANG_PUSH([C++])
@@ -73,6 +74,7 @@ AC_DEFUN([AX_BOOST_CHRONO],
 			 CXXFLAGS=$CXXFLAGS_SAVE
              AC_LANG_POP([C++])
 		])
+		], [ax_cv_boost_chrono=yes])
 		if test "x$ax_cv_boost_chrono" = "xyes"; then
 			AC_SUBST(BOOST_CPPFLAGS)
 

aegisub/m4macros/ax_boost_filesystem.m4

@@ -67,6 +67,7 @@ AC_DEFUN([AX_BOOST_FILESYSTEM],
 		LIBS="$LIBS $BOOST_SYSTEM_LIB"
 		export LIBS
 
+		AS_IF([test x$enable_sanity_checks != xno], [
         AC_CACHE_CHECK(whether the Boost::Filesystem library is available,
 					   ax_cv_boost_filesystem,
         [AC_LANG_PUSH([C++])
@@ -77,6 +78,7 @@ AC_DEFUN([AX_BOOST_FILESYSTEM],
 					       ax_cv_boost_filesystem=yes, ax_cv_boost_filesystem=no)
          AC_LANG_POP([C++])
 		])
+		], [ax_cv_boost_filesystem=yes])
 		if test "x$ax_cv_boost_filesystem" = "xyes"; then
 			AC_DEFINE(HAVE_BOOST_FILESYSTEM,,[define if the Boost::Filesystem library is available])
             BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`

aegisub/m4macros/ax_boost_locale.m4

@@ -62,6 +62,7 @@ AC_DEFUN([AX_BOOST_LOCALE],
 		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
 		export LDFLAGS
 
+		AS_IF([test x$enable_sanity_checks != xno], [
         AC_CACHE_CHECK(whether the Boost::Locale library is available,
 					   ax_cv_boost_locale,
         [AC_LANG_PUSH([C++])
@@ -74,6 +75,7 @@ AC_DEFUN([AX_BOOST_LOCALE],
 			 CXXFLAGS=$CXXFLAGS_SAVE
              AC_LANG_POP([C++])
 		])
+		], [ax_cv_boost_locale=yes])
 		if test "x$ax_cv_boost_locale" = "xyes"; then
 			AC_SUBST(BOOST_CPPFLAGS)
 

aegisub/m4macros/ax_boost_regex.m4

@@ -62,6 +62,7 @@ AC_DEFUN([AX_BOOST_REGEX],
 		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
 		export LDFLAGS
 
+		AS_IF([test x$enable_sanity_checks != xno], [
         AC_CACHE_CHECK(whether the Boost::Regex library is available,
 					   ax_cv_boost_regex,
         [AC_LANG_PUSH([C++])
@@ -71,6 +72,7 @@ AC_DEFUN([AX_BOOST_REGEX],
                    ax_cv_boost_regex=yes, ax_cv_boost_regex=no)
          AC_LANG_POP([C++])
 		])
+		], [ax_cv_boost_regex=yes])
 		if test "x$ax_cv_boost_regex" = "xyes"; then
 			AC_DEFINE(HAVE_BOOST_REGEX,,[define if the Boost::Regex library is available])
             BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`

aegisub/m4macros/ax_boost_system.m4

@@ -64,6 +64,7 @@ AC_DEFUN([AX_BOOST_SYSTEM],
 		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
 		export LDFLAGS
 
+		AS_IF([test x$enable_sanity_checks != xno], [
         AC_CACHE_CHECK(whether the Boost::System library is available,
 					   ax_cv_boost_system,
         [AC_LANG_PUSH([C++])
@@ -75,6 +76,7 @@ AC_DEFUN([AX_BOOST_SYSTEM],
 			 CXXFLAGS=$CXXFLAGS_SAVE
              AC_LANG_POP([C++])
 		])
+		], [ax_cv_boost_system=yes])
 		if test "x$ax_cv_boost_system" = "xyes"; then
 			AC_SUBST(BOOST_CPPFLAGS)
 

aegisub/m4macros/ax_boost_thread.m4

@@ -63,6 +63,7 @@ AC_DEFUN([AX_BOOST_THREAD],
 		LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
 		export LDFLAGS
 
+		AS_IF([test x$enable_sanity_checks != xno], [
         AC_CACHE_CHECK(whether the Boost::Thread library is available,
 					   ax_cv_boost_thread,
         [AC_LANG_PUSH([C++])
@@ -82,6 +83,7 @@ AC_DEFUN([AX_BOOST_THREAD],
 			 CXXFLAGS=$CXXFLAGS_SAVE
              AC_LANG_POP([C++])
 		])
+		], [ax_cv_boost_thread=yes])
 		if test "x$ax_cv_boost_thread" = "xyes"; then
            if test "x$host_os" = "xsolaris" ; then
 			  BOOST_CPPFLAGS="-pthreads $BOOST_CPPFLAGS"