Backport PR #64009: BUG: Missing explicit libm dependency in meson.build causes undefined symbol errors #63640

Author: kjmin622

pandas/_libs/meson.build

@@ -50,6 +50,8 @@ _khash_primitive_helper_dep = declare_dependency(
     sources: _khash_primitive_helper,
 )
 
+m_dep = cc.find_library('m', required: false)
+
 cdata = configuration_data()
 if cy.version().version_compare('>=3.1.0')
     cdata.set('freethreading_compatible', '1')
@@ -70,10 +72,10 @@ libs_sources = {
     # numpy include dir is implicitly included
     'algos': {
         'sources': ['algos.pyx', _algos_common_helper, _algos_take_helper],
-        'deps': _khash_primitive_helper_dep,
+        'deps': [_khash_primitive_helper_dep, m_dep],
     },
     'arrays': {'sources': ['arrays.pyx']},
-    'groupby': {'sources': ['groupby.pyx']},
+    'groupby': {'sources': ['groupby.pyx'], 'deps': [m_dep]},
     'hashing': {'sources': ['hashing.pyx']},
     'hashtable': {
         'sources': [
@@ -126,14 +128,15 @@ libs_sources = {
             'src/vendored/ujson/lib/ultrajsonenc.c',
             'src/vendored/ujson/lib/ultrajsondec.c',
         ],
+        'deps': [m_dep],
     },
     'ops': {'sources': ['ops.pyx']},
     'ops_dispatch': {'sources': ['ops_dispatch.pyx']},
     'properties': {'sources': ['properties.pyx']},
     'reshape': {'sources': ['reshape.pyx']},
     'sas': {'sources': ['sas.pyx']},
     'byteswap': {'sources': ['byteswap.pyx']},
-    'sparse': {'sources': ['sparse.pyx', _sparse_op_helper]},
+    'sparse': {'sources': ['sparse.pyx', _sparse_op_helper], 'deps': [m_dep]},
     'tslib': {'sources': ['tslib.pyx']},
     'testing': {'sources': ['testing.pyx']},
     'writers': {'sources': ['writers.pyx']},

pandas/_libs/tslibs/meson.build

@@ -4,7 +4,7 @@ tslibs_sources = {
     'base': {'sources': ['base.pyx']},
     'ccalendar': {'sources': ['ccalendar.pyx']},
     'dtypes': {'sources': ['dtypes.pyx']},
-    'conversion': {'sources': ['conversion.pyx']},
+    'conversion': {'sources': ['conversion.pyx'], 'deps': [m_dep]},
     'fields': {'sources': ['fields.pyx']},
     'nattype': {'sources': ['nattype.pyx']},
     'np_datetime': {'sources': ['np_datetime.pyx']},