BLD: Generate config.h file

driver/level2/meson.build

@@ -540,7 +540,7 @@ foreach conf : kernel_confs
     # message(conf)
     _kern_libs += [static_library(
         conf['name'],
-        conf['src'],
+        [conf['src'], config_h],
         include_directories: _inc,
         c_args: conf['c_args'],
     )]

driver/level3/meson.build

@@ -454,7 +454,7 @@ foreach conf : kernel_confs
     # message(conf)
     _kern_libs += [static_library(
         conf['name'],
-        conf['src'],
+        [conf['src'], config_h],
         include_directories: _inc,
         c_args: conf['c_args'],
     )]

driver/others/meson.build

@@ -75,7 +75,7 @@ others_libs = []
 foreach conf : others_confs
   others_libs += [static_library(
     conf['name'],
-    conf['src'],
+    [conf['src'], config_h],
     include_directories: _inc,
     c_args: conf['c_args']
   )]

getarch_2nd.c

@@ -1,6 +1,12 @@
 #include <stdio.h>
 #ifndef BUILD_KERNEL
+
+#ifndef BUILD_WITH_MESON
 #include "config.h"
+#else
+#include "_config_for_getarch_2nd.h"
+#endif
+
 #else
 #include "config_kernel.h"
 #endif

interface/meson.build

@@ -621,7 +621,7 @@ foreach conf : _blas_roots
     # Create the static library for each symbol
     lib = static_library(
         sym_name,
-        sources: conf['fname'],
+        sources: [conf['fname'], config_h],
         include_directories: _inc,
         c_args: compiler_args + [
           f'-DASMNAME=@sym_name@',
@@ -643,7 +643,7 @@ foreach conf : _blas_roots
         endif
         cblas_lib = static_library(
             cblas_sym_name,
-            sources: conf['fname'],
+            sources: [conf['fname'], config_h],
             include_directories: _inc,
             c_args: compiler_args + [
               '-DCBLAS',

kernel/meson.build

@@ -1274,7 +1274,7 @@ _is_asm = false
 foreach conf: kernel_confs
   _kern_libs += static_library(
       conf['name'],
-      conf['src'],
+      [conf['src'], config_h],
       include_directories:  _inc,
       c_args: conf['c_args'],
       # See gh discussion 13374 for why, basically .S are coded as fortran..

lapack-netlib/meson.build

@@ -1,8 +1,8 @@
 add_languages('fortran', native: false)
 ff = meson.get_compiler('fortran')
-if ff.has_argument('-Wno-conversion')
-  add_project_arguments('-Wno-conversion', language: 'fortran')
-endif
+# if ff.has_argument('-Wno-conversion')
+#   add_project_arguments('-Wno-conversion', language: 'fortran')
+# endif
 
 lapack_major_version = 3 # soversion
 lapack_minor_version = 12

meson.build

@@ -11,7 +11,7 @@
 #
 # NOTE: This is still a work in progress, the Makefiles are canonical
 project('OpenBLAS', ['c', 'fortran'],
-        default_options: ['c_std=c99', 'pkg.relocatable=true'],
+        default_options: ['c_std=c99', 'pkgconfig.relocatable=true'],
         version: '0.3.26.dev')
 
 openblas_major_version = 0 # soversion
@@ -67,46 +67,6 @@ else
     no_affinity = false
 endif
 
-# Makefile.prebuild stuff
-# TODO(rg): Generate within meson
-# getarch = executable('getarch',
-#           ['getarch.c', 'cpuid.S'])
-# getarch_two = executable('getarch_2nd',
-#                          ['getarch_2nd.c'])
-cchk=custom_target(
-  'c_checks',
-  output: ['Makefile_c.conf', 'config_c.h'],
-  input: ['ctest.c'],
-  command: [find_program('c_check'), 'Makefile_c.conf', 'config_c.h', 'gcc'],
-)
-fchk=custom_target(
-  'f_checks',
-  output: ['Makefile_f.conf', 'config_f.h'],
-  command: [find_program('f_check'), 'Makefile_f.conf', 'config_f.h', 'gfortran'],
-)
-fs = import('fs')
-basic_config = custom_target(
-  'basic_config',
-  output: ['config.h'],
-  input: [cchk, fchk],
-  command: [find_program('python'),
-            'write_file.py', 'config.h',
-            'config_c.h', 'config_f.h']
-)
-
-getarch = executable('getarch',
-          ['getarch.c', 'cpuid.S', basic_config,])
-getarch_two = executable('getarch_2nd',
-                         ['getarch_2nd.c', basic_config,])
-# gch = run_command('c_check', 'Makefile.conf', 'config.h', 'gcc')
-# run_command('f_check', 'Makefile.conf', 'config.h', 'gcc')
-# outp = gch.stdout().strip()
-# config_h = custom_target('gen_config_h',
-#                           # input: ['getarch.c'],
-#                           output: ['config.h'],
-#                           command: [getarch, '3']
-#                           )
-
 _check_prefix = []
 conf_data = configuration_data()
 is_win = host_machine.system() == 'windows' or host_machine.system() == 'cygwin'
@@ -143,18 +103,6 @@ endforeach
 configure_file(output : 'getarch_conf.h',
                configuration : conf_data)
 
-# run_target('generate_config_h',
-#            command: [meson.current_build_dir() + '/getarch', '1'],
-#            depends: getarch)
-
-# gch = run_command(meson.current_build_dir() + '/getarch', '1')
-# outp = gch.stdout().strip()
-
-# conf_data = configuration_data()
-# configure_file(input : meson.current_build_dir() + '/config.h',
-#   output : 'config.h',
-#   configuration : conf_data)
-
 # Makefile.system
 cpu_fam = target_machine.cpu_family()
 
@@ -465,6 +413,46 @@ symb_defs = {
     'cblas_?dotc_sub':  {'def': ['CBLAS', 'FORCE_USE_STACK', 'CONJ']},
 }
 
+# config.h file generation
+
+run_command('c_check', 'Makefile.conf', './build/_config_1.h', 'gcc')
+run_command('f_check', 'Makefile.conf', './build/_config_1.h', 'gfortran')
+
+getarch = executable('getarch', ['getarch.c', 'cpuid.S'])
+
+_config_2h = custom_target('_config_2h',
+                           output: '_config_2.h',
+                           command: [getarch, '1'],
+                           depends: [getarch],
+                           capture: true,
+                          )
+
+_config_for_getarch_2nd_h = custom_target('_config_for_getarch_2nd_h',
+                                          output: '_config_for_getarch_2nd.h',
+                                          command: [find_program('cat'), './_config_1.h', _config_2h],
+                                          depends: [_config_2h],
+                                          capture: true,
+                                         )
+
+getarch_2nd = executable('getarch_2nd',
+                         ['getarch_2nd.c', _config_for_getarch_2nd_h],
+                         c_args: ['-DGEMM_MULTITHREAD_THRESHOLD=4', '-DBUILD_WITH_MESON']
+                        )
+
+_config_3h = custom_target('_config_3h',
+                           output: '_config_3.h',
+                           command: [getarch_2nd, '1'],
+                           depends: [getarch_2nd],
+                           capture: true,
+                          )
+
+config_h = custom_target('config_h',
+                         output: 'config.h',
+                         command: [find_program('cat'), _config_for_getarch_2nd_h, _config_3h],
+                         depends: [_config_3h],
+                         capture: true,
+                        )
+
 # Ignoring other hostarch checks and conflicts for arch in BSD for now
 _inc = [include_directories('.')]
 subdir('lapack-netlib')