glog: updated libunwind look up function

Updated FindLinunwind cmake file to locate libunwind properly in the system.
This includes settings all needed defines in config.h file, which are used
for glog compilation. Changed unwind cmake target to interface, because in
cross-compilation environment we could link against several libunwind shared
libraries.

Signed-off-by: Vyacheslav Yurkov <Vyacheslav.Yurkov@bruker.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

3 files changed, 115 insertions, 34 deletions

diff --git a/meta-oe/recipes-support/glog/glog/0001-find-libunwind-during-configure.patch b/meta-oe/recipes-support/glog/glog/0001-find-libunwind-during-configure.patch
deleted file mode 100644
index 33dc9d38a..000000000
--- a/meta-oe/recipes-support/glog/glog/0001-find-libunwind-during-configure.patch
+++ /dev/null
@@ -1,30 +0,0 @@
-diff -ur git/CMakeLists.txt ../0.3.5-r0.unwind/git/CMakeLists.txt
---- git/CMakeLists.txt  2018-10-08 08:54:15.118989400 +0200
-+++ ../0.3.5-r0.unwind/git/CMakeLists.txt       2018-10-05 16:26:59.745922318 +0200
-@@ -384,7 +384,9 @@
- set_target_properties (glog PROPERTIES POSITION_INDEPENDENT_CODE ON)
- 
- if (UNWIND_LIBRARY)
--  target_link_libraries (glog PUBLIC ${UNWIND_LIBRARY})
-+  add_library(unwind SHARED IMPORTED)
-+  set_target_properties(unwind PROPERTIES IMPORTED_LOCATION ${UNWIND_LIBRARY})
-+  target_link_libraries (glog PUBLIC unwind)
- endif (UNWIND_LIBRARY)
- 
- if (HAVE_PTHREAD)
-diff -ur git/glog-config.cmake.in ../0.3.5-r0.unwind/git/glog-config.cmake.in
---- git/glog-config.cmake.in    2018-10-08 08:54:15.122989699 +0200
-+++ ../0.3.5-r0.unwind/git/glog-config.cmake.in 2018-10-08 08:14:48.550745810 +0200
-@@ -4,4 +4,12 @@
- 
- @gflags_DEPENDENCY@
- 
-+find_library (UNWIND_LIBRARY NAMES unwind DOC "unwind library")
-+mark_as_advanced (UNWIND_LIBRARY)
-+
-+if (UNWIND_LIBRARY)
-+  add_library(unwind SHARED IMPORTED)
-+  set_target_properties(unwind PROPERTIES IMPORTED_LOCATION ${UNWIND_LIBRARY})
-+endif (UNWIND_LIBRARY)
-+
- include ("${CMAKE_CURRENT_LIST_DIR}/glog-targets.cmake")
diff --git a/meta-oe/recipes-support/glog/glog/0002-Find-Libunwind-during-configure.patch b/meta-oe/recipes-support/glog/glog/0002-Find-Libunwind-during-configure.patch
new file mode 100644
index 000000000..3a6f824ea
--- /dev/null
+++ b/meta-oe/recipes-support/glog/glog/0002-Find-Libunwind-during-configure.patch
@@ -0,0 +1,113 @@
+diff -uNr a/cmake/FindLibunwind.cmake b/cmake/FindLibunwind.cmake
+--- a/cmake/FindLibunwind.cmake 1970-01-01 01:00:00.000000000 +0100
++++ b/cmake/FindLibunwind.cmake 2018-11-02 14:04:35.460437058 +0100
+@@ -0,0 +1,37 @@
++# - Try to find libunwind
++# Once done this will define
++#
++#  LIBUNWIND_FOUND - system has libunwind
++#  unwind - cmake target for libunwind
++
++find_library (UNWIND_LIBRARY NAMES unwind DOC "unwind library")
++include (CheckIncludeFile)
++check_include_file (libunwind.h HAVE_LIBUNWIND_H)
++check_include_file (unwind.h HAVE_UNWIND_H)
++
++if (CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
++    set(LIBUNWIND_ARCH "arm")
++elseif (CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" OR
++        CMAKE_SYSTEM_PROCESSOR STREQUAL "amd64")
++    set(LIBUNWIND_ARCH "x86_64")
++elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^i.86$")
++    set(LIBUNWIND_ARCH "x86")
++endif()
++
++find_library (UNWIND_LIBRARY_PLATFORM NAMES "unwind-${LIBUNWIND_ARCH}" DOC "unwind library platform")
++if (UNWIND_LIBRARY_PLATFORM)
++    set(HAVE_LIB_UNWIND "1")
++endif()
++
++include(FindPackageHandleStandardArgs)
++# handle the QUIETLY and REQUIRED arguments and set Libunwind_FOUND to TRUE
++# if all listed variables are TRUE
++find_package_handle_standard_args(Libunwind DEFAULT_MSG
++    UNWIND_LIBRARY HAVE_LIBUNWIND_H HAVE_UNWIND_H HAVE_LIB_UNWIND)
++
++mark_as_advanced (UNWIND_LIBRARY UNWIND_LIBRARY_PLATFORM)
++
++add_library(unwind INTERFACE IMPORTED)
++set_target_properties(unwind PROPERTIES
++    INTERFACE_LINK_LIBRARIES "${UNWIND_LIBRARY};${UNWIND_LIBRARY_PLATFORM}"
++)
+diff -uNr a/CMakeLists.txt b/CMakeLists.txt
+--- a/CMakeLists.txt    2018-11-02 14:02:21.784835854 +0100
++++ b/CMakeLists.txt    2018-11-02 14:03:16.796935594 +0100
+@@ -58,7 +58,6 @@
+ check_include_file (execinfo.h HAVE_EXECINFO_H)
+ check_include_file (glob.h HAVE_GLOB_H)
+ check_include_file (inttypes.h HAVE_INTTYPES_H)
+-check_include_file (libunwind.h HAVE_LIBUNWIND_H)
+ check_include_file (memory.h HAVE_MEMORY_H)
+ check_include_file (pwd.h HAVE_PWD_H)
+ check_include_file (stdint.h HAVE_STDINT_H)
+@@ -74,7 +73,6 @@
+ check_include_file (syslog.h HAVE_SYSLOG_H)
+ check_include_file (ucontext.h HAVE_UCONTEXT_H)
+ check_include_file (unistd.h HAVE_UNISTD_H)
+-check_include_file (unwind.h HAVE_UNWIND_H)
+ 
+ check_include_file_cxx ("ext/hash_map" HAVE_EXT_HASH_MAP)
+ check_include_file_cxx ("ext/hash_set" HAVE_EXT_HASH_SET)
+@@ -109,10 +107,7 @@
+ # snprintf as an inline function
+ check_symbol_exists (snprintf stdio.h HAVE_SNPRINTF)
+ 
+-check_library_exists (unwind get_static_proc_name "" HAVE_LIB_UNWIND)
+-
+-find_library (UNWIND_LIBRARY NAMES unwind DOC "unwind library")
+-mark_as_advanced (UNWIND_LIBRARY)
++find_package(Libunwind)
+ 
+ check_c_source_compiles ("
+ #include <stdlib.h>
+@@ -376,9 +371,9 @@
+ 
+ set_target_properties (glog PROPERTIES POSITION_INDEPENDENT_CODE ON)
+ 
+-if (UNWIND_LIBRARY)
+-  target_link_libraries (glog PUBLIC ${UNWIND_LIBRARY})
+-endif (UNWIND_LIBRARY)
++if (Libunwind_FOUND)
++  target_link_libraries (glog PUBLIC unwind)
++endif (Libunwind_FOUND)
+ 
+ if (HAVE_PTHREAD)
+   target_link_libraries (glog PUBLIC ${CMAKE_THREAD_LIBS_INIT})
+@@ -571,6 +566,7 @@
+ install (FILES
+   ${CMAKE_CURRENT_BINARY_DIR}/glog-config.cmake
+   ${CMAKE_CURRENT_BINARY_DIR}/glog-config-version.cmake
++  ${CMAKE_CURRENT_SOURCE_DIR}/cmake/FindLibunwind.cmake
+   DESTINATION lib/cmake/glog)
+ 
+ install (EXPORT glog-targets NAMESPACE glog:: DESTINATION lib/cmake/glog)
+Binary files a/.git/index and b/.git/index differ
+diff -uNr a/glog-config.cmake.in b/glog-config.cmake.in
+--- a/glog-config.cmake.in      2018-11-02 14:02:21.784835854 +0100
++++ b/glog-config.cmake.in      2018-11-02 14:03:16.796935594 +0100
+@@ -4,4 +4,15 @@
+ 
+ @gflags_DEPENDENCY@
+ 
++# Record the state of the CMake module path when this script was
++# called so that we can ensure that we leave it in the same state on
++# exit as it was on entry, but modify it locally.
++set(UNWIND_CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH})
++
++set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")
++find_dependency (Libunwind)
++
++# Restore original module path
++set(CMAKE_MODULE_PATH "${UNWIND_CMAKE_MODULE_PATH}")
++
+ include ("${CMAKE_CURRENT_LIST_DIR}/glog-targets.cmake")
diff --git a/meta-oe/recipes-support/glog/glog_0.3.5.bb b/meta-oe/recipes-support/glog/glog_0.3.5.bb
index 4c1bce74e..5e58450c2 100644
--- a/meta-oe/recipes-support/glog/glog_0.3.5.bb
+++ b/meta-oe/recipes-support/glog/glog_0.3.5.bb
@@ -10,8 +10,8 @@ DEPENDS = "libunwind"
 
 SRC_URI = " \
     git://github.com/google/glog.git;branch=v035 \
-    file://0001-find-libunwind-during-configure.patch \
     file://0001-Rework-CMake-glog-VERSION-management.patch \
+    file://0002-Find-Libunwind-during-configure.patch \
 "
 
 SRCREV = "a6a166db069520dbbd653c97c2e5b12e08a8bb26"
@@ -20,8 +20,6 @@ S = "${WORKDIR}/git"
 
 inherit cmake
 
-RDEPENDS_${PN}-dev = ""
-RRECOMMENDS_${PN}-dev = "${PN}-staticdev"
-RRECOMMENDS_${PN}-dbg = "${PN}-dev (= ${EXTENDPKGV})"
+RDEPENDS_${PN} += "libunwind"
 
 EXTRA_OECMAKE += "-DBUILD_SHARED_LIBS=ON"