Hello,
your fix worked for the drivers. Maybe the issue is with my setup.
My steps where:
$ git clone git://repo.or.cz/autotool-experiments
$ cd autotool-experiments
$ mkdir build; cd build
$ autoconf
when just running that, I get:
../configure: error: cannot find install-sh, install.sh, or shtool in
build-aux "."/build-aux
I fixed it with:
$ autoreconf -i
maybe the auxilaries of this modified raspbian are interfering with the
autoconf, because it still runs the disabled one.
However, tried the cmake approach (fresh folder) and app_combo seems
fine now, behaves identical in both lto and no-lto configurations:
[17:25:13] RevPi2248:~/src/autotool-experiments/build$ cmake ..
...
-- with LTO: OFF
-- Enabled drivers:
-- Driver 1: ON
-- Driver 2: ON
-- Driver 3: ON
-- Driver 4: ON
-- Driver 5: ON
...
[17:31:35] RevPi2248:~/src/autotool-experiments/build$ make &&
./app_combo
communicating ...
items:
0x76fa5edc 1 driver1 0x76f958dc
0x76fa5ee8 2 driver2 0x76f95924
0x76fa5ef4 3 driver3 0x76f9596c
0x76fa5f00 4 driver4 0x76f959b4
0x76fa5f0c 5 driver5 0x76f959fc
list end
driver1, do something
driver2, do something
driver3, do something
driver4, do something
driver5, do something
[17:31:53] RevPi2248:~/src/autotool-experiments/build$ cmake
-DWITH_LTO=ON .
-- with LTO: ON
-- Enabled drivers:
-- Driver 1: ON
-- Driver 2: ON
-- Driver 3: ON
-- Driver 4: ON
-- Driver 5: ON
[17:32:18] RevPi2248:~/src/autotool-experiments/build$ make VERBOSE=1 &&
./app_combo
communicating ...
items:
0x76f49edc 1 driver1 0x76f398c8
0x76f49ee8 2 driver2 0x76f39908
0x76f49ef4 3 driver3 0x76f39948
0x76f49f00 4 driver4 0x76f39988
0x76f49f0c 5 driver5 0x76f399c8
list end
driver1, do something
driver2, do something
driver3, do something
driver4, do something
driver5, do something
[17:33:29] RevPi2248:~/src/autotool-experiments/build$ cmake
-DWITH_LTO=OFF .
-- with LTO: OFF
-- Enabled drivers:
-- Driver 1: ON
-- Driver 2: ON
-- Driver 3: ON
-- Driver 4: ON
-- Driver 5: ON
[17:33:30] RevPi2248:~/src/autotool-experiments/build$ make VERBOSE=1 &&
./app_combo
communicating ...
items:
0x76efdedc 1 driver1 0x76eed8dc
0x76efdee8 2 driver2 0x76eed924
0x76efdef4 3 driver3 0x76eed96c
0x76efdf00 4 driver4 0x76eed9b4
0x76efdf0c 5 driver5 0x76eed9fc
list end
driver1, do something
driver2, do something
driver3, do something
driver4, do something
driver5, do something
[17:33:53] RevPi2248:~/src/autotool-experiments/build$ cmake
-DWITH_DRIVER_3=OFF -DWITH_DRIVER_5=OFF .
-- with LTO: OFF
-- Enabled drivers:
-- Driver 1: ON
-- Driver 2: ON
-- Driver 3: OFF
-- Driver 4: ON
-- Driver 5: OFF
[17:34:09] RevPi2248:~/src/autotool-experiments/build$ make VERBOSE=1 &&
./app_combo
communicating ...
items:
0x76f5aef4 1 driver1 0x76f4a89c
0x76f5af00 2 driver2 0x76f4a8e4
0x76f5af0c 4 driver4 0x76f4a92c
list end
driver1, do something
driver2, do something
driver4, do something
[17:34:28] RevPi2248:~/src/autotool-experiments/build$ cmake
-DWITH_DRIVER_3=OFF -DWITH_DRIVER_5=OFF -DWITH_LTO=OFF .
-- with LTO: OFF
-- Enabled drivers:
-- Driver 1: ON
-- Driver 2: ON
-- Driver 3: OFF
-- Driver 4: ON
-- Driver 5: OFF
[17:35:16] RevPi2248:~/src/autotool-experiments/build$ make VERBOSE=1 &&
./app_combo
However, I needed to make a minor adjustment regarding the outdated
cmake (3.7.2) on this system:
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7aa3956..5256033 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -43,9 +43,11 @@ else ()
endif ()
add_library(combo SHARED ${LIB_SRCS})
if (WITH_LTO)
- target_link_options(combo PUBLIC -flto)
+ link_libraries("-flto")
+# target_link_options(combo PUBLIC -flto)
else ()
- target_link_options(combo PUBLIC -fno-lto)
+ link_libraries("-fno-lto")
+# target_link_options(combo PUBLIC -fno-lto)
endif ()
set(APP_SRCS
that's why I ran make with VERBOSE=1 to make sure -fno-lto / -flto shows
up in the linker lines.
Let me know if I can do something else.
I'll have a look if I can get my hands on the old PowerPC system next
week (but can make no promises, since it's an old test system with it's
OS in ruines and I don't know if it will even boot).
Best regards,
Martin
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