Changes between Initial Version and Version 2 of Ticket #57654


Ignore:
Timestamp:
Nov 20, 2018, 5:05:23 PM (6 years ago)
Author:
olupton (Olli Lupton)
Comment:

That didn't work:

ccache /opt/local/bin/clang++  -DCustomRoot_EXPORTS -DR__HAVE_CONFIG -DWITH_TBB -Iinclude -isystem explicit/include -isystem range-v3/include -isystem /opt/local/libexec/root6/include/root -isystem /opt/local/include -pipe -Os -stdlib=libc++ -m64 -pipe -fsigned-char -fno-common -Qunused-arguments -pthread -std=c++1z -stdlib=libc++ -DR__HAVE_CONFIG -O2 -g -DNDEBUG -fPIC   -Wall -Weverything -pedantic -Wno-c++98-compat -Wno-c++98-compat-pedantic -Wno-missing-prototypes -Wno-global-constructors -Wno-padded -Wno-conversion -Wno-double-promotion -Wno-weak-vtables -Wno-exit-time-destructors -Wno-float-equal -Wno-used-but-marked-unused -Wno-undefined-func-template -std=c++17 -Wno-old-style-cast -Wno-unused-macros -Wno-reserved-id-macro -Wno-zero-as-null-pointer-constant -MD -MT src/CMakeFiles/CustomRoot.dir/CustomRootDicts.cxx.o -MF src/CMakeFiles/CustomRoot.dir/CustomRootDicts.cxx.o.d -o src/CMakeFiles/CustomRoot.dir/CustomRootDicts.cxx.o -c src/CustomRootDicts.cxx
In file included from src/CustomRootDicts.cxx:12:
In file included from /opt/local/include/ROOT/RConfig.h:1:
/opt/local/include/ROOT/RConfig.h:1:15: fatal error: 'ROOT/RConfig.h' file not found
#include_next <ROOT/RConfig.h>
              ^~~~~~~~~~~~~~~~
1 error generated.

I think the original #include "RConfig.h" finds /opt/local/libexec/root6/include/root/RConfig.h (contents: #include_next), which then looks for ROOT/RConfig.h starting from the next directory in the include search list (/opt/local/include) and finds /opt/local/include/root/RConfig.h...which is the same file containing #include_next. But 2nd time there are no more search paths to try, so it fails.

If I use #include instead of #include_next in the wrapper header then my current test case compiles. Not sure if that will break in some other case though...

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  • Ticket #57654 – Description

    initial v2  
    1212}}}
    1313
    14 This change to {{{RConfig.h}} was introduced in
     14This change to {{{RConfig.h}}} was introduced in
    1515https://github.com/root-project/root/commit/38580d360a3c1793e5cc8af1c9e9efbba71f9b74#diff-9361ac3923df05c6c743e0822e6fe33e
    1616