figure out demangle.h location

Author: hpjeonGIT

install_tau.md

@@ -5,24 +5,35 @@
 - At tau source code, configure -prefix=/opt/tau/2.34 -c++=mpicxx -cc=mpicc -mpi -openmp; make install
 - But this may yield UNRESOLVED UNKNOWN for function name at postprocessing of profiling results
 - Will need bintuils with -bfd options
-- Install binutils with configure command of ./configure --prefix=/opt/bintuils/2.40 --enable=shared --enable-6t4-bit-bfd --enalbe-install-libiberty ...
-  - Check configure script to check which version of binutils is supported  
+- Install binutils with configure command of ./configure --prefix=/opt/bintuils/2.42 --enable=shared --enable-6t4-bit-bfd --enalbe-install-libiberty ...
+  - Check configure script to check which version of binutils is supported
+    - but apex/cmake/Modules/FindBFD.cmake downloads 2.42 (Feb 2025)
   - Details are at apex/cmake/Modules/FindBFD.cmake
   - make -j 20; make install
-  - Make sure that libiberty.a is installed 
+  - Make sure that libiberty.a is installed
+  - cd /opt/binutils/2.42/include; ln -s libiberty ./extra # include/libiberty is not searched from TAU for demangle.sh
 - Install libunwind: autoconf -i; configure --prefix=/opt/libunwind/1.6.2 ; make -j 10; make install
 - Install papi: cd src; configure --prefix=/opt/papi; make -j 10; make instal
 - Then configure tau as  configure -prefix=/opt/tau/2.34 -bfd=/opt/bin/utils/2.40 -unwind=/opt/libunwind/1.6.2 -papi=/opt/papi/ -c++=mpicxx -cc=mpicc -mpi -openmp; make install
+- For environmental variables
+  - TAU_VERBOSE=1
+  - TAU_OPTIONS=-optCompInst
+  - TAU_SAMPLING=1
+  - TAU_CALLPATH=1
+  - TAU_CALLPATH_DEPTH=100
+  - TAU_METRICS=TIME,PAPI_L1_DCM
+  - TAU_MAKEFILE=..../Makefile.tau-papi-mpi-openmp
 
 ## TAU + PDT
 - Install PDT first. MPI not required
 - At tau, configure -prefix=/opt/tau/2.34 -bfd=/opt/bin/utils/2.43 -unwind=/opt/libunwind/1.6.2 -papi=/opt/papi -pdt=/opt/pdt/ -c++=mpicxx -cc=mpicc -mpi -openmp; make install
+- support for C++ may not work well
 - PDT may be deprecated. See SALT coupling
 
 ## TAU with cmake
 - cmake may not work well due to instrument optimzation
   - Edit configure script with tau_cc.sh and tau_cxx.sh
   - export TAU_OPTIONS=-optDisable
-  - configure
+  - configure; # TAU will pass through, not disrupting the source code/cmake
   - export TAU_OPTIONS=-optCompInst
   - make -j 40