cam6_4_182: Updates to CAM build of TUV-X lib

bld/build-namelist

@@ -750,6 +750,15 @@ if (not $waccm_phys) {
     add_default($nl, 'p_bot_for_radmrg');
 }
 
+# Check TUV-X configuration
+my $tuvx_active = $nl->get_value('tuvx_active');
+if ($tuvx_active =~ /$TRUE/io) {
+    my $tuvx_config = $cfg->get('tuvx');
+    if (!$tuvx_config) {
+	die "$ProgName - ERROR: must use -tuvx CAM configure flag \n";
+    }
+}
+
 # Solar irradiance
 
 # First check that solar_const and solar_irrad_data_file are not both defined

bld/config_files/definition.xml

@@ -59,6 +59,9 @@ Option to turn on waccmx thermosphere/ionosphere extension: 0 => no, 1 => yes
 <entry id="ext_co2_cool" valid_values="0,1" value="0">
 Option to turn on extended non-LTE CO2 cooling: 0 => no, 1 => yes
 </entry>
+<entry id="tuvx" valid_values="0,1" value="0">
+Option to build TUV-X library: 0 => no, 1 => yes
+</entry>
 <entry id="ionosphere" valid_values="none,wxie" value="none">
 Ionosphere model used in WACCMX.
 </entry>

bld/configure

@@ -107,6 +107,7 @@ OPTIONS
      -psubcols <n>      Maximum number of sub-columns in a run - set to 1 if not using sub-columns (default)
      -rad <name>        Specify the radiation package [rrtmg | rrtmgp | rrtmgp_gpu | camrt]
      -silhs             Switch on SILHS.
+     -tuvx              Switch to build TUV-X library
      -usr_mech_infile   Path and file name of the user supplied chemistry mechanism file.
      -waccm_phys        Switch enables the use of WACCM physics in any chemistry configuration.
                         The user does not need to set this if one of the waccm chemistry options
@@ -305,6 +306,7 @@ GetOptions(
     "waccm_phys"                => \$opts{'waccm_phys'},
     "waccmx"                    => \$opts{'waccmx'},
     "ext_co2_cool"              => \$opts{'ext_co2_cool'},
+    "tuvx"                      => \$opts{'tuvx'},
 )  or usage();
 
 # Give usage message.
@@ -717,6 +719,12 @@ if (defined $opts{'ext_co2_cool'}) {
 }
 my $ext_co2_cool = $cfg_ref->get('ext_co2_cool');
 
+# TUV-x option
+if (defined $opts{'tuvx'}) {
+    $cfg_ref->set('tuvx', $opts{'tuvx'});
+}
+my $tuvx = $cfg_ref->get('tuvx');
+
 #-----------------------------------------------------------------------------------------------
 
 # Prognostic species package(s)
@@ -1788,6 +1796,11 @@ if ($ext_co2_cool) {
     $cfg_cppdefs .= ' -DEXT_CO2_COOL';
 }
 
+# TUV-X
+if ($tuvx) {
+    $cfg_cppdefs .= ' -DTUVX';
+}
+
 # PIO
 my $pio2_build = (defined $opts{'pio2'}) ? 1 : 0;
 
@@ -1864,7 +1877,7 @@ if ($cosp) {
       $ldflags .= " -L$cosp_libdir -lrttov13_wrapper -lrttov13_mw_scatt -lrttov13_brdf_atlas -lrttov13_emis_atlas -lrttov13_other -lrttov13_parallel -lrttov13_coef_io -lrttov13_hdf -lrttov13_main ";
       $cfg_ref->set('ldflags', $ldflags);
       print "Adding rttov libraries as dependencies in ldflags.\n";
-    }       
+    }
     # Create the COSP Makefile from a template and copy it into the cosp bld directory
     if ($print) { print "creating $cosp_libdir/Makefile\n"; }
     write_cosp_makefile("$cfgdir/../src/physics/cosp2/Makefile.in", "$cosp_libdir/Makefile");

cime_config/buildlib

@@ -6,7 +6,7 @@ create the cam library
 # pylint: disable=multiple-imports, wrong-import-position, wildcard-import
 # pylint: disable=unused-wildcard-import, bad-whitespace, too-many-locals
 # pylint: disable=invalid-name
-import sys, os, filecmp, shutil
+import sys, os, filecmp, shutil, re
 from glob import glob
 
 _CIMEROOT = os.environ.get("CIMEROOT")
@@ -232,60 +232,76 @@ def _build_tuvx(caseroot, libroot, bldroot):
 # Builds the TUV-x library and updates the case variables used to set the
 # include paths and linked libraries
 
-    with Case(caseroot) as case:
-        bldpath = os.path.join(bldroot, "tuv-x")
-        if not os.path.exists(bldpath):
-            os.makedirs(bldpath)
-        srcpath = os.path.abspath(os.path.join(case.get_value("SRCROOT"), \
-                                               "libraries", "tuv-x", ""))
-        logger.info("Building TUV-x in {} from source in {}\n".format(bldpath, srcpath))
-
-        arg_dict = _cmake_default_args(caseroot)
-        cmake_args = "-DCMAKE_VERBOSE_MAKEFILE=ON "
-        if case.get_value("MPILIB") != "mpi-serial":
-            cmake_args += "-DTUVX_ENABLE_MPI:BOOL=TRUE "
-        cmake_args += "-DCMAKE_BUILD_TYPE=Debug "
-        cmake_args += "-DCMAKE_Fortran_COMPILER=mpif90 "
-        cmake_args += "-DCMAKE_C_COMPILER=mpicc "
-        cmake_args += "-DCMAKE_CXX_COMPILER=mpicxx "
-        cmake_args += "-DCMAKE_Fortran_COMPILER_WORKS=1 "
-        cmake_args += "-DCMAKE_C_COMPILER_WORKS=1 "
-        cmake_args += "-DCMAKE_CXX_COMPILER_WORKS=1 "
-        if (case.get_value("MACH") == "izumi") :
-            cmake_args += f"-DCMAKE_PREFIX_PATH={arg_dict['NETCDF_PATH']} "
-            cmake_args += f"-DCMAKE_IGNORE_PATH={os.environ.get('PYTHONHOME')} "
-        if (case.get_value("MACH") == "izumi") and (case.get_value('COMPILER') == "nag") :
-            cmake_args += "-DCMAKE_Fortran_FLAGS='-C=all -g ' "
-        else :
-            cmake_args += f"-DCMAKE_Fortran_FLAGS='{arg_dict['FFLAGS']}' "
-        cmake_args += f"-DCMAKE_INSTALL_PREFIX='{libroot}' "
-        cmake_args += "-DTUVX_ENABLE_TESTS=OFF "
-        cmake_args += "-DTUVX_ENABLE_COVERAGE=OFF "
-        cmake_args += "-DTUVX_BUILD_CLI=OFF "
-        cmake_args += f"-DTUVX_INSTALL_INCLUDE_DIR='{_tuvx_include_dir(libroot)}' "
-        cmake_args += f"-DTUVX_INSTALL_MOD_DIR='{_tuvx_include_dir(libroot)}' "
-        cmake_args += srcpath
-
-        _run_cmd(f"cmake {cmake_args}", bldpath)
-        _run_cmd(case.get_value('GMAKE'), bldpath)
-        _run_cmd(f"{case.get_value('GMAKE')} install", bldpath)
-
-        # add TUV-x to include paths
-        incldir = os.environ.get('USER_INCLDIR')
-        if incldir is None:
-            incldir = ''
-        os.environ['USER_INCLDIR'] = incldir + \
-            f" -I{_tuvx_include_dir(libroot)} "
-
-        # create symlink to library in folder CIME expects libraries to be in
-        dst = os.path.join(libroot, "libtuvx.a")
-        if os.path.isfile(dst):
-            os.remove(dst)
-        os.symlink(_tuvx_lib_path(libroot), dst)
-        dst = os.path.join(libroot, "libyaml-cpp.a")
-        if os.path.isfile(dst):
-            os.remove(dst)
-        os.symlink(_yaml_cpp_lib_path(libroot), dst)
+    with Case(caseroot, read_only=False) as case:
+        config_opts = case.get_value("CAM_CONFIG_OPTS")
+
+        # Remove any TUV-x link options set by a previous build, so that
+        # re-building the case does not accumulate duplicate or stale
+        # options in CAM_LINKED_LIBS:
+        linked_libs = case.get_value("CAM_LINKED_LIBS",
+                                     subgroup="build_component_cam")
+        tuvx_link_opts = " -ltuvx -lyaml-cpp"
+        new_linked_libs = re.sub(r"\s*-ltuvx -lyaml-cpp", "", linked_libs)
+        if "-tuvx" in config_opts:
+            bldpath = os.path.join(bldroot, "tuv-x")
+            if not os.path.exists(bldpath):
+                os.makedirs(bldpath)
+            srcpath = os.path.abspath(os.path.join(case.get_value("SRCROOT"), \
+                                      "libraries", "tuv-x", ""))
+            logger.info("Building TUV-x in {} from source in {}\n".format(bldpath, srcpath))
+
+            arg_dict = _cmake_default_args(caseroot)
+            cmake_args = "-DCMAKE_VERBOSE_MAKEFILE=ON "
+            if case.get_value("MPILIB") != "mpi-serial":
+                cmake_args += "-DTUVX_ENABLE_MPI:BOOL=TRUE "
+            cmake_args += "-DCMAKE_BUILD_TYPE=Debug "
+            cmake_args += "-DCMAKE_Fortran_COMPILER=mpif90 "
+            cmake_args += "-DCMAKE_C_COMPILER=mpicc "
+            cmake_args += "-DCMAKE_CXX_COMPILER=mpicxx "
+            cmake_args += "-DCMAKE_Fortran_COMPILER_WORKS=1 "
+            cmake_args += "-DCMAKE_C_COMPILER_WORKS=1 "
+            cmake_args += "-DCMAKE_CXX_COMPILER_WORKS=1 "
+            cmake_args += "-DCMAKE_DISABLE_FIND_PACKAGE_yaml-cpp=1 "
+            if (case.get_value("MACH") == "izumi") :
+                cmake_args += f"-DCMAKE_PREFIX_PATH={arg_dict['NETCDF_PATH']} "
+            if (case.get_value("MACH") == "izumi") and (case.get_value('COMPILER') == "nag") :
+                cmake_args += "-DCMAKE_Fortran_FLAGS='-C=all -g ' "
+            else :
+                cmake_args += f"-DCMAKE_Fortran_FLAGS='{arg_dict['FFLAGS']}' "
+            cmake_args += f"-DCMAKE_INSTALL_PREFIX='{libroot}' "
+            cmake_args += "-DTUVX_ENABLE_TESTS=OFF "
+            cmake_args += "-DTUVX_ENABLE_COVERAGE=OFF "
+            cmake_args += "-DTUVX_BUILD_CLI=OFF "
+            cmake_args += f"-DTUVX_INSTALL_INCLUDE_DIR='{_tuvx_include_dir(libroot)}' "
+            cmake_args += f"-DTUVX_INSTALL_MOD_DIR='{_tuvx_include_dir(libroot)}' "
+            cmake_args += srcpath
+
+            _run_cmd(f"cmake {cmake_args}", bldpath)
+            _run_cmd(case.get_value('GMAKE'), bldpath)
+            _run_cmd(f"{case.get_value('GMAKE')} install", bldpath)
+
+            # add TUV-x to include paths
+            incldir = os.environ.get('USER_INCLDIR')
+            if incldir is None:
+                incldir = ''
+            os.environ['USER_INCLDIR'] = incldir + \
+                f" -I{_tuvx_include_dir(libroot)} "
+
+            # create symlink to library in folder CIME expects libraries to be in
+            dst = os.path.join(libroot, "libtuvx.a")
+            if os.path.isfile(dst):
+                os.remove(dst)
+            os.symlink(_tuvx_lib_path(libroot), dst)
+            dst = os.path.join(libroot, "libyaml-cpp.a")
+            if os.path.isfile(dst):
+                os.remove(dst)
+            os.symlink(_yaml_cpp_lib_path(libroot), dst)
+
+            # Add TUVX to CAM linked library list:
+            new_linked_libs = tuvx_link_opts.strip() + " " + new_linked_libs
+
+        if new_linked_libs != linked_libs:
+            case.set_value("CAM_LINKED_LIBS", new_linked_libs)
 
 ###############################################################################
 def _tuvx_include_dir(libroot):

cime_config/buildnml

@@ -65,7 +65,8 @@ def buildnml(case, caseroot, compname):
             "Gregorian calendar (modifier _cG) cannot be used with spinup compset \n  {}".format(COMPSET)
         )
 
-    tuvx_data_src = os.path.join(srcroot, "libraries", "tuv-x", "data")
+    if '-tuvx' in CAM_CONFIG_OPTS:
+        tuvx_data_src = os.path.join(srcroot, "libraries", "tuv-x", "data")
 
     testsrc = os.path.join(srcroot, "components", "cam")
     if os.path.exists(testsrc):
@@ -237,10 +238,11 @@ def buildnml(case, caseroot, compname):
                    shutil.copy(file1,file2)
 
         # Copy TUV-x data to rundir
-        dest_data = os.path.join(rundir, "data")
-        if os.path.exists(dest_data):
-            shutil.rmtree(dest_data)
-        shutil.copytree(tuvx_data_src, dest_data)
+        if '-tuvx' in CAM_CONFIG_OPTS:
+            dest_data = os.path.join(rundir, "data")
+            if os.path.exists(dest_data):
+                shutil.rmtree(dest_data)
+            shutil.copytree(tuvx_data_src, dest_data)
 
 ###############################################################################
 def _main_func():

cime_config/config_component.xml

@@ -230,7 +230,7 @@
   <entry id="CAM_LINKED_LIBS">
     <type>char</type>
     <valid_values></valid_values>
-    <default_value>-ltuvx -lyaml-cpp -lstdc++</default_value>
+    <default_value>-lstdc++</default_value>
     <group>build_component_cam</group>
     <file>env_build.xml</file>
     <desc>

cime_config/testdefs/testmods_dirs/cam/carma_mixed_sulfate/shell_commands

@@ -1,4 +1,4 @@
-./xmlchange CAM_CONFIG_OPTS=" -phys cam4 -rad rrtmg -chem waccm_ma_sulfur -carma mixed_sulfate"
+./xmlchange CAM_CONFIG_OPTS=" -phys cam4 -rad rrtmg -chem waccm_ma_sulfur -carma mixed_sulfate -tuvx"
 ./xmlchange ROF_NCPL=\$ATM_NCPL
 ./xmlchange GLC_NCPL=\$ATM_NCPL
 ./xmlchange RUN_STARTDATE="0001-01-01"

cime_config/testdefs/testmods_dirs/cam/outfrq9s_tuvx_waccm_ma_mam5/shell_commands

@@ -1,2 +1,3 @@
+./xmlchange --append CAM_CONFIG_OPTS="-tuvx"
 ./xmlchange ROF_NCPL=\$ATM_NCPL
 ./xmlchange GLC_NCPL=\$ATM_NCPL

cime_config/testdefs/testmods_dirs/cam/outfrq9s_waccm_ma_mam4/shell_commands

@@ -1,2 +1,2 @@
 ./xmlchange ROF_NCPL=\$ATM_NCPL
-./xmlchange CAM_CONFIG_OPTS="-phys cam6 -age_of_air_trcs -chem waccm_ma_mam4 -ext_co2_cool"
+./xmlchange CAM_CONFIG_OPTS="-phys cam6 -age_of_air_trcs -chem waccm_ma_mam4 -ext_co2_cool -tuvx"

doc/ChangeLog

@@ -1,4 +1,84 @@
+===============================================================
+
+Tag name: cam6_4_182
+Originator(s): fvitt
+Date: 16 Jun 2026
+One-line Summary: Updates to CAM's build of TUV-X library
+Github PR URL: https://github.com/ESCOMP/CAM/pull/1577
+
+Purpose of changes (include the issue number and title text for each relevant GitHub issue):
+
+ Build TUV-X library only in cases where TUV-X is used.  Configure
+ switch -tuvx has been added to CAM_CONFIG_OPTS which activates
+ the build of the TUV-X library.
+
+ Address issues:
+  #1537: TUV-x build issue when users have Conda environments active
+  https://github.com/ESCOMP/CAM/issues/1570
+
+  #1570: TUV-x copies input files to run directory regardless of whether TUV-x is active
+  https://github.com/ESCOMP/CAM/issues/1570
+
+Describe any changes made to build system:
+ Changes TUV-X library build as described above
+
+Describe any changes made to the namelist: N/A
+
+List any changes to the defaults for the boundary datasets: N/A
+
+Describe any substantial timing or memory changes: N/A
+
+Code reviewed by: jimmielin cacraigucar
+
+List all files eliminated: N/A
+
+List all files added and what they do: N/A
+
+List all existing files that have been modified, and describe the changes:
+
+M       bld/build-namelist
+ - error out if tuvx_active is TRUE and not configured for TUV-X
+
+M       bld/config_files/definition.xml
+M       bld/configure
+ - add "-tuvx" configure switch -- define "TUVX" CPP def
+
+M       cime_config/buildlib
+ - build TUV-X lib only if "-tuvx" is included in CAM_CONFIG_OPTS
+
+M       cime_config/buildnml
+ - copy TUV-X input data to run directory only if "-tuvx" is included in CAM_CONFIG_OPTS
+
+M       cime_config/config_component.xml
+ - remove tuvx and yaml-cpp libs from default setting of CAM_LINKED_LIBS
+   -- buildlib will add these only only if cam is configured for tuvx
 
+M       cime_config/testdefs/testmods_dirs/cam/carma_mixed_sulfate/shell_commands
+M       cime_config/testdefs/testmods_dirs/cam/outfrq9s_tuvx_waccm_ma_mam5/shell_commands
+M       cime_config/testdefs/testmods_dirs/cam/outfrq9s_waccm_ma_mam4/shell_commands
+ -- append "-tuvx" to CAM_CONFIG_OPTS
+
+M       src/chemistry/mozart/mo_tuvx.F90
+ - use ifdefs to stub out the module for cases where TUV-X lib is not available
+
+If there were any failures reported from running test_driver.sh on any test
+platform, and checkin with these failures has been OK'd by the gatekeeper,
+then copy the lines from the td.*.status files for the failed tests to the
+appropriate machine below.  All failed tests must be justified.
+
+derecho/intel/aux_cam: All PASS
+
+derecho/nvhpc/aux_cam: All PASS
+
+izumi/nag/aux_cam:
+  FAIL ERC_D_Ln9.f10_f10_mt232.FHIST_C5.izumi_nag.cam-outfrq3s_subcol COMPARE_base_rest
+  - pre-existing failure -- see https://github.com/ESCOMP/CAM/issues/1514
+
+izumi/gnu/aux_cam: All PASS
+
+Summarize any changes to answers: bit-for-bit
+
+===============================================================
 ===============================================================
 
 Tag name: cam6_4_181