build: install public headers in the build tree

this symlinks our public headers into the build tree, which will allow
us to refer to the public headers by their public name inside the
source tree.

diff --git a/buildtools/wafsamba/wafsamba.py b/buildtools/wafsamba/wafsamba.py
index ebe8fba1f7ba7357b1a41c4e5bb140a1ae80e4b4..45e8d6bfec7b3b94e489f8fa1c7326f3076d2e60 100644 (file)
--- a/buildtools/wafsamba/wafsamba.py
+++ b/buildtools/wafsamba/wafsamba.py
@@ -726,6 +726,20 @@ def INSTALL_DIRS(bld, destdir, dirs):
 Build.BuildContext.INSTALL_DIRS = INSTALL_DIRS
 
 
+def header_install_path(header, header_path):
+    '''find the installation path for a header, given a header_path option'''
+    if not header_path:
+        return ''
+    if not isinstance(header_path, list):
+        return header_path
+    for (p1, dir) in header_path:
+        for p2 in TO_LIST(p1):
+            if fnmatch.fnmatch(header, p2):
+                return dir
+    # default to current path
+    return ''
+
+
 re_header = re.compile('#include[ \t]*"([^"]+)"', re.I | re.M)
 class header_task(Task.Task):
     """
@@ -819,21 +833,7 @@ def make_public_headers(self):
 
     for x in self.to_list(self.headers):
 
-        # too complicated, but what was the original idea?
-        if isinstance(header_path, list):
-            add_dir = ''
-            for (p1, dir) in header_path:
-                lst = self.to_list(p1)
-                for p2 in lst:
-                    if fnmatch.fnmatch(x, p2):
-                        add_dir = dir
-                        break
-                else:
-                    continue
-                break
-            inst_path = add_dir
-        else:
-            inst_path = header_path
+        inst_path = header_install_path(x, header_path)
 
         dest = ''
         name = x
@@ -868,6 +868,20 @@ def make_public_headers(self):
         val = hash((val, k, self.bld.hnodemap[k]))
     self.bld.env.HEADER_DEPS = val
 
+
+
+def symlink_header(task):
+    '''symlink a header in the build tree'''
+    src = task.inputs[0].abspath(task.env)
+    tgt = task.outputs[0].bldpath(task.env)
+
+    if os.path.lexists(tgt):
+        if os.path.islink(tgt) and os.readlink(tgt) == src:
+            return
+        os.unlink(tgt)
+    os.symlink(src, tgt)
+
+
 def PUBLIC_HEADERS(bld, public_headers, header_path=None):
     '''install some headers
 
@@ -877,6 +891,31 @@ def PUBLIC_HEADERS(bld, public_headers, header_path=None):
     '''
     bld.SET_BUILD_GROUP('final')
     ret = bld(features=['pubh'], headers=public_headers, header_path=header_path)
+
+    if bld.env.build_public_headers:
+        # when build_public_headers is set, symlink the headers into the include/public
+        # directory
+        for h in TO_LIST(public_headers):
+            inst_path = header_install_path(h, header_path)
+            if h.find(':') != -1:
+                s = h.split(":")
+                h_name =  s[0]
+                inst_name = s[1]
+            else:
+                h_name =  h
+                inst_name = os.path.basename(h)
+            relpath1 = os_path_relpath(bld.srcnode.abspath(), bld.curdir)
+            relpath2 = os_path_relpath(bld.curdir, bld.srcnode.abspath())
+            targetdir = os.path.normpath(os.path.join(relpath1, bld.env.build_public_headers, inst_path))
+            if not os.path.exists(os.path.join(bld.curdir, targetdir)):
+                raise Utils.WafError("missing source directory %s for public header %s" % (targetdir, inst_name))
+            target = os.path.join(targetdir, inst_name)
+            bld.SAMBA_GENERATOR('HEADER_%s/%s' % (relpath2, inst_name),
+                                rule=symlink_header,
+                                source=h_name,
+                                target=target)
+
+
     return ret
 Build.BuildContext.PUBLIC_HEADERS = PUBLIC_HEADERS
 

diff --git a/wscript_build b/wscript_build
index 318020c1ea81358c27e3ac74972e82bf270b4f61..ba47499126636486b77b2bb248e64912e3a23270 100644 (file)
--- a/wscript_build
+++ b/wscript_build
@@ -17,6 +17,9 @@ bld.env.suffix3 = "3"
 bld.SETUP_BUILD_GROUPS()
 bld.AUTOCLEANUP_STALE_FILES()
 
+# enable building of public headers in the build tree
+bld.env.build_public_headers = 'include/public'
+
 samba_version.load_version(bld.env)
 bld.SAMBA_MKVERSION('version.h')