2 files changed, 113 insertions, 0 deletions
diff --git a/bin/gen-iwyu-dummy-lib b/bin/gen-iwyu-dummy-lib
new file mode 100755
index 000000000..c7d64817d
--- /dev/null
+++ b/bin/gen-iwyu-dummy-lib
@@ -0,0 +1,79 @@
+#!/bin/bash
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+# Create a makefile that builds every non-generated header as a source file.
+# This should help to ensure the headers are self-contained and don't
+# impose unnecessary requirements (unnecessary includes) on client code.
+#
+# This script is fully compliant with the UNIX philosophy
+# (and if you can't read it you are clearly not worthy)
+
+set -e
+
+iwyu_INCLUDES=$(grep -h -r ":$" "$BUILDDIR"/workdir/Dep/*Object* \
+    | grep -v 'workdir\|config_host' | grep -v "^/usr" \
+    | sed -e "s,^${SRCDIR}/,," | sed -e "s/:$//"  | sort -u)
+
+iwyu_INCLUDEDIRS=$(echo "$iwyu_INCLUDES" | sed -e "s,/[^/]*$,," | grep -v "^include" | sort -u)
+
+iwyu_EXTERNALS=$(ls "$SRCDIR"/*/*Library*mk "$SRCDIR"/*/*Executable*mk \
+    | xargs awk -f "$SRCDIR"/bin/gen-iwyu-dummy-lib.awk \
+    | grep -v '$(\|)\|\\$\|apr\|breakpad\|bzip2\|expat_x64\|mDNSResponder\|serf\|zlib_x64')
+
+iwyu_DIR="$BUILDDIR"/iwyudummy/
+mkdir -p "$iwyu_DIR"
+
+{
+    echo 'module_directory:=$(dir $(realpath $(firstword $(MAKEFILE_LIST))))'
+    echo "include ${SRCDIR}/solenv/gbuild/partial_build.mk"
+} > "$iwyu_DIR"Makefile
+
+{
+    echo '$(eval $(call gb_Module_Module,iwyudummy))'
+    echo '$(eval $(call gb_Module_add_targets,iwyudummy,StaticLibrary_iwyudummy))'
+} > "$iwyu_DIR"Module_iwyudummy.mk
+
+{
+    # prevent some common configuration errors
+    echo 'ifneq ($(COMPILER_PLUGINS),)'
+    echo '    $(call gb_Output_error,--enable-compiler-plugins does not work well with this: bailing out)'
+    echo 'endif'
+
+    echo '$(eval $(call gb_StaticLibrary_StaticLibrary,iwyudummy))'
+    # clang will "compile" headers to .gch by default
+    echo '$(eval $(call gb_StaticLibrary_add_cxxflags,iwyudummy,-x c++ -D__cplusplus=201402L -D__STDC_VERSION__=201112L -Wno-unused-macros -Wno-unused-const-variable))'
+    echo '$(eval $(call gb_StaticLibrary_use_custom_headers,iwyudummy,officecfg/registry))'
+    echo '$(eval $(call gb_StaticLibrary_use_sdk_api,iwyudummy))'
+    echo '$(eval $(call gb_StaticLibrary_use_externals,iwyudummy,\'
+    for ext in ${iwyu_EXTERNALS}; do
+        echo "${ext} \\";
+    done
+    echo '))'
+
+    echo '$(eval $(call gb_StaticLibrary_set_include,iwyudummy,\'
+    echo '$$(INCLUDE) \'
+    for dir in ${iwyu_INCLUDEDIRS}; do
+        if echo "$dir" | grep ".*/inc/" &>/dev/null; then
+            iwyu_INCLUDEDIRS_EXTRA+=" ${dir%/inc/*}/inc"
+        fi
+    done
+    for dir in $(echo ${iwyu_INCLUDEDIRS_EXTRA} | sed -e "s/ /\n/g" | uniq) ${iwyu_INCLUDEDIRS}; do
+        echo "-I${SRCDIR}/${dir} \\";
+    done
+    # it fails to find stddef.h?
+    echo "-I/usr/lib/clang/$(llvm-config --version)/include \\"
+    echo "))"
+
+    echo '$(eval $(call gb_StaticLibrary__add_iwyu_headers,iwyudummy,\'
+    for hdr in ${iwyu_INCLUDES}; do
+        echo "${hdr} \\";
+    done
+    echo '))'
+} > "$iwyu_DIR"StaticLibrary_iwyudummy.mk
+
diff --git a/bin/gen-iwyu-dummy-lib.awk b/bin/gen-iwyu-dummy-lib.awk
new file mode 100644
index 000000000..464d9515c
--- /dev/null
+++ b/bin/gen-iwyu-dummy-lib.awk
@@ -0,0 +1,34 @@
+BEGIN  { domatch = 0; }
+
+{
+    if ($0 ~ /use_external(s)?,/ )
+    {
+        if (index($0, "))"))
+        {
+            gsub(/.*,/, "");
+            gsub(/\)+/, ""); 
+            if (!($0 in exts))
+            {
+                exts[$0];
+                print $0;
+            }
+        }
+        else
+        {
+           domatch = 1;
+        }
+    }
+    else if ($0 ~ /\)\)/ )
+    {
+        domatch = 0;
+    }
+    else if (domatch == 1)
+    {
+        if (!($1 in exts))
+        {
+            exts[$1];
+            print $1;
+        }
+    }
+}
+