Problem building ROOT 6.12 on Mac OS X High Sierra

ROOT
1

Dear experts.

I try to build ROOT (6.12.06) on my Mac (OS X High Sierra 10.13.4) following the instructions in [1]
using cmake (3.11.1). However, I get the following error:

clang++ -m64 -std=c++11 -stdlib=libc++ -pipe -Wshadow -W -Wall -Woverloaded-virtual -fsigned-char -fno-common -Iinclude -pthread -MMD -MP -I. -o hist/unfold/src/G__Unfold.o -c hist/unfold/src/G__Unfold.cxx
clang++ -dynamiclib -single_module -Wl,-dead_strip_dylibs -install_name @rpath/libUnfold.so -O2 -DNDEBUG -m64 -mmacosx-version-min=10.13 -stdlib=libc++ -Wl,-rpath,@loader_path/…/lib -o lib/libUnfold.so hist/unfold/src/TUnfold.o hist/unfold/src/TUnfoldBinning.o hist/unfold/src/TUnfoldBinningXML.o hist/unfold/src/TUnfoldDensity.o hist/unfold/src/TUnfoldSys.o hist/unfold/src/G__Unfold.o -ldl -Llib -lCore -Llib -lHist -lMatrix -lXMLParser
ld: library not found for -lXMLParser
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [lib/libUnfold.so] Error 1

I browsed through ROOT forum entries, found [2] and tried to compile with

cmake --build . -- -j1

as suggested but it didn’t help.

Am I missing a library? Before compilation I installed “libxml2” via homebrew (hoping it is the correct XML library).

Thanks for any suggestion (and sorry if I missed any forum entry that covers this problem already, though I have been searching…)

Regards,
heico

[1] - Building ROOT from source - ROOT
[2] - Cannot find -lXMLParser while installing ROOT: Release 6.10/06 - 2017-09-19

2

Please attach the whole build log. The real error probably happened when building libXMLParser (which is now not found).

3

I attached the log to this reply.

heico
buildlog.txt (399.7 KB)

4

It looks like we may still have problems with build dependencies in ROOT 6.12. Could you please try building XMLParser first, then the remaining of the build, as shown below? Thanks!

$ cmake --build . --target XMLParser
$ cmake --build .
5

The first command gives me this:

root-6.12.06 conni$ cmake --build . --target XMLParser
clang -O2 -DNDEBUG -m64 -pipe -Wshadow -W -Wall -fsigned-char -fno-common -Iinclude -pthread -DINCLUDEDIR="/usr/include" -DOBJSUFFIX=".o" -o build/rmkdepend/cppsetup.o -c /Users/conni/Software/root-6.12.06/build/rmkdepend/cppsetup.c
clang -O2 -DNDEBUG -m64 -pipe -Wshadow -W -Wall -fsigned-char -fno-common -Iinclude -pthread -DINCLUDEDIR="/usr/include" -DOBJSUFFIX=".o" -o build/rmkdepend/ifparser.o -c /Users/conni/Software/root-6.12.06/build/rmkdepend/ifparser.c
clang -O2 -DNDEBUG -m64 -pipe -Wshadow -W -Wall -fsigned-char -fno-common -Iinclude -pthread -DINCLUDEDIR="/usr/include" -DOBJSUFFIX=".o" -o build/rmkdepend/include.o -c /Users/conni/Software/root-6.12.06/build/rmkdepend/include.c
clang -O2 -DNDEBUG -m64 -pipe -Wshadow -W -Wall -fsigned-char -fno-common -Iinclude -pthread -DINCLUDEDIR="/usr/include" -DOBJSUFFIX=".o" -o build/rmkdepend/main.o -c /Users/conni/Software/root-6.12.06/build/rmkdepend/main.c
clang -O2 -DNDEBUG -m64 -pipe -Wshadow -W -Wall -fsigned-char -fno-common -Iinclude -pthread -DINCLUDEDIR="/usr/include" -DOBJSUFFIX=".o" -o build/rmkdepend/parse.o -c /Users/conni/Software/root-6.12.06/build/rmkdepend/parse.c
clang -O2 -DNDEBUG -m64 -pipe -Wshadow -W -Wall -fsigned-char -fno-common -Iinclude -pthread -DINCLUDEDIR="/usr/include" -DOBJSUFFIX=".o" -o build/rmkdepend/pr.o -c /Users/conni/Software/root-6.12.06/build/rmkdepend/pr.c
clang++ -O2 -DNDEBUG -m64 -std=c++11 -stdlib=libc++ -pipe -Wshadow -W -Wall -Woverloaded-virtual -fsigned-char -fno-common -Iinclude -pthread -DINCLUDEDIR="/usr/include" -DOBJSUFFIX=".o" -o build/rmkdepend/mainroot.o -c /Users/conni/Software/root-6.12.06/build/rmkdepend/mainroot.cxx
clang++ -O2 -DNDEBUG -m64 -mmacosx-version-min=10.13 -stdlib=libc++ -Wl,-rpath,@loader_path/…/lib -o bin/rmkdepend build/rmkdepend/cppsetup.o build/rmkdepend/ifparser.o build/rmkdepend/include.o build/rmkdepend/main.o build/rmkdepend/parse.o build/rmkdepend/pr.o build/rmkdepend/mainroot.o
make: *** No rule to make target `XMLParser’. Stop.

6

I see. You may have inconsistent settings for XML if you installed libxml2 after a failure to build. Maybe enabling it back can help:

$ cmake . -Dxml=ON
$ cmake --build . --target XMLParser
7

Dear amadio,

Sorry for getting back to this only now, haven’t had time earlier unfortunately.

With your latest suggestion it worked, though I had to execute the first command (cmake . -Dxml=ON) in a separate directory as cmake did not want to spoil the source folder with the build.

So for reference and in case somebody else has similar issues, I did:

mkdir rootbuild
cd rootbuild
cmake ../root-6.12.06/ -Dxml=ON
cmake --build . --target XMLParser
cmake --build .

Thanks so much!

Cheers,
heico

8

No problem, I’m glad I could help. I bet that you could just have proceeded normally once you already had libxml2 installed. The problem was probably a bad cache due to installing things after configuring. Let us know if you encounter problems in the future. Cheers,

9

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