Hi,
the below patch is more or less a proof of concept. It changes the
mingw-w64-crt configury so that the internal headers from a parallel
mingw-w64-headers directory are preferred and used if available.
If you don't want that, specify --without-headers, which is the option
used from top-level to disable building the header files at all.
Please have a look.
Thanks,
Corinna
* configure.ac: Add --without-headers option to disable building
against parallel in-tree mingw-w64-headers headers.
(_mingw_mac.h): Don't test existence if building with in-tree
headers.
* Makefile.am (local_headers): COnditionally add internal header
paths.
(sysincludes): Add local_headers.
Index: configure.ac
===================================================================
--- configure.ac (revision 5336)
+++ configure.ac (working copy)
@@ -45,6 +45,18 @@
dnl ---
AM_PROG_CC_C_O
+AC_MSG_CHECKING([whether to use the local in-tree headers])
+AC_ARG_WITH([headers],
+ [AS_HELP_STRING([--without-headers],
+ [Do not use the in-tree mingw-w64 headers])],
+ [],
+ [with_local_headers=`test -d "${srcdir}/../mingw-w64-headers" && echo yes ||
echo no`])
+AC_MSG_RESULT([$with_local_headers])
+AS_CASE([$with_local_headers],
+ [no],[AS_VAR_SET([WITH_LOCAL_HEADERS])],
+ [yes],[],
+ [AC_MSG_ERROR([invalid argument. Must be either yes or no.])])
+AM_CONDITIONAL([WITH_LOCAL_HEADERS], [AS_VAR_TEST_SET([WITH_LOCAL_HEADERS])])
AC_MSG_CHECKING([whether to build the crt startup])
AC_ARG_ENABLE([startup],
[AS_HELP_STRING([--disable-startup],
@@ -221,8 +239,13 @@
#AC_FUNC_VPRINTF
#AC_CHECK_FUNCS([alarm atexit btowc fesetround floor ftruncate gettimeofday
isascii localeconv mbrlen memmove memset pow rint setlocale sqrt strcasecmp
strchr strncasecmp strtoull strtoumax])
-AC_CHECK_HEADER([_mingw_mac.h], [], [AC_MSG_ERROR([Please check if the
mingw-w64 header set and the build/host option are set properly.])])
+AS_CASE([$with_local_headers],
+ [yes],[],
+ [*],[AC_CHECK_HEADER([_mingw_mac.h],
+ [],
+ [AC_MSG_ERROR([Please check if the mingw-w64 header set
and the build/host option are set properly.])])])
+
#Warnings and errors, default level is 3
AC_MSG_CHECKING([for warning levels])
AC_ARG_ENABLE([warnings],
Index: Makefile.am
===================================================================
--- Makefile.am (revision 5336)
+++ Makefile.am (working copy)
@@ -28,6 +28,9 @@
dlltool_underscores=--no-leading-underscore
endif
+local_headers=@WITH_LOCAL_HEADERS_FALSE@
-I$(abs_top_srcdir)/../mingw-w64-headers/crt
-I$(abs_top_srcdir)/../mingw-w64-headers/include
-I$(abs_builddir)/../mingw-w64-headers
-I$(abs_builddir)/../mingw-w64-headers/crt
+sysincludes+=$(local_headers)
+
AM_CPPFLAGS=-D_CRTBLD $(sysincludes)
AM_CFLAGS=$(cflags_underscores) -pipe -std=gnu99 @ADD_C_CXX_WARNING_FLAGS@
@ADD_C_ONLY_WARNING_FLAGS@
AM_CXXFLAGS=@ADD_C_CXX_WARNING_FLAGS@ @ADD_CXX_ONLY_WARNING_FLAGS@
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