[Link] configure flag '-linker' accepts default value, which corresponds to the default linker.

Author: trust-tma

DEVELOPER_NOTES

@@ -1,7 +1,7 @@
 -------------------------------------------------------------
 Developer notes version 1.9.4_beta : Changes since version 1.9.3 :
 -------------------------------------------------------------
-23/05/24 (TRUST) Change       : Flag '-linker' can be used to override linker, otherwise mold will be used if found.
+23/05/24 (TRUST) Change       : Flag '-linker' can be used to override linker, otherwise mold will be used if found. configure option -linker=default will force default linker.
 17/05/24 (TRUST) Minor change : Methods Gpoint() and Gpoint(t1,t2) renamed derivee_en_temps() and calculer_derivee_en_temps(t1,t2)
 14/05/24 (TRUST) Debug        : Flag '-enable-kokkos-debug' can be used to compile (and link only with $exec_debug) Kokkos library in Debug mode.
 30/04/24 (TRUST) Debug        : Flag '-enable-mc-debug' can be used to compile (and link only with $exec_debug) MEDCoupling library in Debug mode.

bin/KSH/Createcmakefile.py

@@ -489,7 +489,7 @@ def generate_cmake_files(root_dir, atelier):
             add_executable (${trio} ${inst_compl})
             target_link_libraries(${trio} ${my_listobj} ${syslib})
         endif()
-    
+
         install (TARGETS ${trio} DESTINATION exec)
 
         #

configure

@@ -273,7 +273,7 @@ echo "   -cxxflags=<flags>                 Add C++ compiler options."
 echo "   -cflags=<flags>                   Add C compiler options."
 echo "   -fflags=<flags>                   Add Fortran compiler options."
 echo " "
-echo "   -linker=<prog>                    Force the use of a specified linker."
+echo "   -linker=<prog>                    Force the use of a specified linker (if -linker=default, standard linking will be used)."
 echo " "
 echo "   -with-64-bit-indices              Build with 64 bits integer indices."
 echo " "

env_src/configurer_env

@@ -1077,14 +1077,17 @@ fi
 # Linker setup - will use 'mold' if found:
 ###############################
 echo "# Checking if linker is overriden (you can set configure option '-linker=' to do this) or if 'mold' is present ..."
-if [ "$TRUST_FORCE_LINKER" != "" ]; then
-  echo "# TRUST linker forced to : $TRUST_FORCE_LINKER"
-  m="# TRUST linker" && e="TRUST_LINKER=\"$TRUST_FORCE_LINKER\"  && export TRUST_LINKER" && ecrit $m"|"$e"|"$env;eval $e
+if [ "$TRUST_FORCE_LINKER" != "" ] && [ "$TRUST_FORCE_LINKER" != "default" ]
+then
+   echo "# TRUST linker forced to: $TRUST_FORCE_LINKER"
+   m="# TRUST linker" && e="TRUST_LINKER=\"$TRUST_FORCE_LINKER\"  && export TRUST_LINKER" && ecrit $m"|"$e"|"$env;eval $e
 fi
 mold=`whence_ mold`
-if [ $? -eq 0 ] && [ "$TRUST_FORCE_LINKER" == "" ]; then
-  echo "# 'mold' linker detected: $mold"
-  m="# TRUST linker" && e="TRUST_LINKER=\"$mold\"  && export TRUST_LINKER" && ecrit $m"|"$e"|"$env;eval $e
+if [ "$mold" != "" ] && [ "$TRUST_FORCE_LINKER" == "" ] && [ "$TRUST_ARCH_CC" != "linux_icpc" ] && [ "$TRUST_ARCH_CC" != "linux_icpx" ]
+then
+   # for intel, only bfd, gold and lld are avail: https://www.intel.com/content/www/us/en/docs/cpp-compiler/developer-guide-reference/2021-8/fuse-ld.html
+   echo "# 'mold' linker detected: $mold (if you want to not use it, set configure option -linker=default)"
+   m="# TRUST linker" && e="TRUST_LINKER=\"mold\"  && export TRUST_LINKER" && ecrit $m"|"$e"|"$env;eval $e
 fi
 
 #####################
@@ -2546,4 +2549,4 @@ then
     (cd $TRUST_ROOT && ./bin/BUILD64/GO)
 fi
 
-exit 0
+exit 0