build: Improved meson-build to use rizin as subproject

* Setting GNU99/C99 standard for subprojects
* Remove use of `add_global_arguments`
* Added extern "C" linkage specification to some public headers of rizin
* Changed the meson_git_wrapper.py-script to explicitly specify the output-path
* Made the RIZIN_BUILD_PATH conditional in the integration-test meson-build

librz/include/rz_types.h

@@ -14,6 +14,10 @@
 #include <inttypes.h>
 #endif
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // TODO: fix this to make it crosscompile-friendly: RZ_SYS_OSTYPE ?
 /* operating system */
 #undef __BSD__
@@ -729,4 +733,8 @@ static inline void *rz_asm_plugin_data_from_rz_analysis(RZ_NONNULL void /*<RzAna
 	return rasm->plugin_data;
 }
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif // RZ_TYPES_H

librz/include/rz_util/rz_intervaltree.h

@@ -7,6 +7,10 @@
 #include "rz_rbtree.h"
 #include "../rz_types.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*
  * RzIntervalTree is a special RBTree (augmented red-black tree)
  * that holds its entries, each associated with a interval,
@@ -100,4 +104,8 @@ static inline bool rz_interval_tree_empty(RzIntervalTree *tree) {
 	if ((tree)->root) \
 		for ((it) = rz_rbtree_last(&(tree)->root->node); rz_rbtree_iter_has(&it) && (dat = rz_rbtree_iter_get(&it, RzIntervalNode, node)->data); rz_rbtree_iter_prev(&(it)))
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif // RZ_INTERVALTREE_H

meson.build

@@ -1,6 +1,6 @@
 project('rizin', 'c',
   version: 'v0.8.0',
-  license: 'LGPL3',
+  license: 'LGPL-3.0-only',
   meson_version: '>=0.57.0',
   default_options: [
     'buildtype=debugoptimized',
@@ -80,14 +80,14 @@ if is_static_build
 endif
 
 if cc.has_argument('--std=gnu99')
-  add_global_arguments('--std=gnu99', language: ['c', 'cpp'])
+  add_project_arguments('--std=gnu99', language: ['c', 'cpp'])
 elif cc.has_argument('--std=c99')
-  add_global_arguments('--std=c99', language: ['c', 'cpp'])
+  add_project_arguments('--std=c99', language: ['c', 'cpp'])
 endif
 
 # Sanitize correct usage of rz_strf()
 if cc.has_argument('-Werror=sizeof-pointer-memaccess')
-  add_global_arguments('-Werror=sizeof-pointer-memaccess', language: ['c', 'cpp'])
+  add_project_arguments('-Werror=sizeof-pointer-memaccess', language: ['c', 'cpp'])
 endif
 
 if cc.has_argument('-Wimplicit-fallthrough=3')
@@ -106,17 +106,17 @@ endif
 
 if get_option('default_library') == 'shared'
   if cc.has_argument('-fvisibility=hidden')
-    add_global_arguments('-fvisibility=hidden', language: 'c')
+    add_project_arguments('-fvisibility=hidden', language: 'c')
   endif
 endif
 
 add_project_arguments(['-DRZ_PLUGIN_INCORE=1'], language: 'c')
 b_sanitize_opt = get_option('b_sanitize')
 if (b_sanitize_opt.contains('address') or b_sanitize_opt.contains('undefined')) and cc.get_id() == 'clang'
-  add_global_arguments('-shared-libasan', language: 'c')
-  add_global_link_arguments('-shared-libasan', language: 'c')
-  add_global_arguments('-shared-libasan', language: 'c', native: true)
-  add_global_link_arguments('-shared-libasan', language: 'c', native: true)
+  add_project_arguments('-shared-libasan', language: 'c')
+  add_project_link_arguments('-shared-libasan', language: 'c')
+  add_project_arguments('-shared-libasan', language: 'c', native: true)
+  add_project_link_arguments('-shared-libasan', language: 'c', native: true)
 endif
 
 fs = import('fs')
@@ -355,7 +355,7 @@ foreach it : ccs
   have_pthread = it_th.found() and it_machine.system() != 'windows'
   if it_machine.system() == 'sunos'
     # workaround for Solaris until https://github.com/mesonbuild/meson/issues/4328 is fixed
-    it_mth = declare_dependency(link_args: '-lm', native: it_native)
+    it_mth = declare_dependency(link_args: '-lm')
   else
     it_mth = it_cc.find_library('m', required: false, static: is_static_build)
   endif
@@ -558,7 +558,7 @@ if git_exe.found() and fs.exists('.git')
     build_always_stale: true,
     build_by_default: true,
     output: 'gittip',
-    command: [py3_exe, git_exe_repo_py, git_exe, repo, 'rev-parse', 'HEAD'],
+    command: [py3_exe, git_exe_repo_py, git_exe, repo, '@OUTPUT@', 'rev-parse', 'HEAD'],
     install: true,
     install_dir: rizin_datdir_rz
   )

subprojects/nettle/meson.build

@@ -1,5 +1,5 @@
 project('nettle', 'c',
-  license: [ 'LGPL'],
+  license: 'LGPL',
   version: '3.7.3'
 )
 # https://git.lysator.liu.se/nettle/nettle

subprojects/packagefiles/blake3/meson.build

@@ -1,4 +1,11 @@
-project('blake3', 'c', version: '1.3.1', license : ['CC0-1.0'], meson_version: '>=0.55.0')
+project('blake3', 'c',
+  version: '1.3.1',
+  license: 'CC0-1.0',
+  meson_version: '>=0.55.0',
+  default_options: [
+    'c_std=c99',
+  ]
+)
 
 cc = meson.get_compiler('c')
 

subprojects/packagefiles/capstone-4.0.2/meson.build

@@ -1,4 +1,15 @@
-project('capstone', 'c', version: '4.0.2', meson_version: '>=0.55.0')
+project('capstone', 'c',
+  version: '4.0.2',
+  meson_version: '>=0.55.0',
+)
+
+cc = meson.get_compiler('c')
+
+if cc.has_argument('--std=gnu99')
+  add_project_arguments('--std=gnu99', language: ['c'])
+elif cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
 
 cs_files = [
   'arch/AArch64/AArch64BaseInfo.c',

subprojects/packagefiles/capstone-5.0.1/meson.build

@@ -1,4 +1,15 @@
-project('capstone', 'c', version: '5.0.1', meson_version: '>=0.55.0')
+project('capstone', 'c',
+  version: '5.0.1',
+  meson_version: '>=0.55.0',
+)
+
+cc = meson.get_compiler('c')
+
+if cc.has_argument('--std=gnu99')
+  add_project_arguments('--std=gnu99', language: ['c'])
+elif cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
 
 cs_files = [
   'arch/AArch64/AArch64BaseInfo.c',

subprojects/packagefiles/capstone-6.0.0-alpha1/meson.build

@@ -1,4 +1,15 @@
-project('capstone', 'c', version: 'next', meson_version: '>=0.55.0')
+project('capstone', 'c',
+  version: 'next',
+  meson_version: '>=0.55.0',
+)
+
+cc = meson.get_compiler('c')
+
+if cc.has_argument('--std=gnu99')
+  add_project_arguments('--std=gnu99', language: ['c'])
+elif cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
 
 cs_files = [
   'arch/Alpha/AlphaDisassembler.c',

subprojects/packagefiles/capstone-next/meson.build

@@ -1,4 +1,15 @@
-project('capstone', 'c', version: 'next', meson_version: '>=0.55.0')
+project('capstone', 'c',
+  version: 'next',
+  meson_version: '>=0.55.0',
+)
+
+cc = meson.get_compiler('c')
+
+if cc.has_argument('--std=gnu99')
+  add_project_arguments('--std=gnu99', language: ['c'])
+elif cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
 
 cs_files = [
   'arch/Alpha/AlphaDisassembler.c',

subprojects/packagefiles/libmspack/meson.build

@@ -1,7 +1,15 @@
-project('libmspack', 'c', version: '0.10.1alpha', license : ['LGPL2'], meson_version: '>=0.55.0')
+project('libmspack', 'c',
+  version: '0.10.1alpha',
+  license : 'LGPL2',
+  meson_version: '>=0.55.0',
+)
 
 cc = meson.get_compiler('c')
 
+if cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
+
 # handle libmspack dependency
 libmspack_files = [
   'libmspack' / 'mspack' / 'cabc.c',

subprojects/packagefiles/libzip-1.9.2/meson.build

@@ -1,10 +1,19 @@
 project('libzip', 'c',
-  version: '1.9.2')
+  version: '1.9.2',
+  license: 'BSD-3-clause',
+  meson_version: '>=0.55.0',
+)
 
 py3_exe = import('python').find_installation()
 cc = meson.get_compiler('c')
 is_static_build = get_option('static_runtime')
 
+if cc.has_argument('--std=gnu99')
+  add_project_arguments('--std=gnu99', language: ['c'])
+elif cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
+
 # Create config.h file
 conf_data = configuration_data()
 zlib_dep = dependency('zlib', required: get_option('use_sys_zlib'), static: is_static_build)

subprojects/packagefiles/lz4-1.9.4/meson.build

@@ -1,7 +1,14 @@
 project('lz4', ['c'],
-  license: ['BSD', 'GPLv2'],
+  license: 'BSD-2-Clause-Patent AND GPL-2.0-or-later',
   version: '1.9.4',
-  meson_version: '>=0.47.0')
+  meson_version: '>=0.55.0',
+)
+
+cc = meson.get_compiler('c')
+
+if cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
 
 lz4_files = [
   'lib/lz4.c',

subprojects/packagefiles/pcre2/meson.build

@@ -2,6 +2,10 @@ project('pcre2', 'c', version: '10.44')
 
 cc = meson.get_compiler('c')
 
+if cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
+
 conf_data = configuration_data()
 
 pcre2_chartables = configure_file(input : 'src/pcre2_chartables.c.dist',

subprojects/packagefiles/rizin-grammar-c/meson.build

@@ -1,4 +1,16 @@
-project('rizin-grammar-c', 'c', default_options: ['werror=false'])
+project('rizin-grammar-c', 'c',
+  license: 'MIT',
+  meson_version: '>=0.55.0',
+  default_options: [
+    'werror=false'
+  ]
+)
+
+cc = meson.get_compiler('c')
+
+if cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
 
 ts_c_files = [
   'src/parser.c'

subprojects/packagefiles/tree-sitter-0.21.0/meson.build

@@ -1,7 +1,16 @@
-project('tree-sitter', 'c')
+project('tree-sitter', 'c',
+  license: 'MIT',
+  meson_version: '>=0.55.0',
+)
 
 cc = meson.get_compiler('c')
 
+if cc.has_argument('--std=gnu99')
+  add_project_arguments('--std=gnu99', language: ['c'])
+elif cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
+
 tree_sitter_path = 'tree-sitter'
 
 tree_sitter_files = ['lib/src/lib.c']

subprojects/packagefiles/xz-5.2.9/meson.build

@@ -1,10 +1,18 @@
 # liblzma is what upstream uses for their pkg-config name
 project('liblzma', 'c',
-  version : '5.2.9',
-  license : 'pd/lgpl2/gpl2/gpl3',)
+  version : '5.4.3',
+  license : ['PD', 'LGPL2', 'GPL2', 'GPL3'],
+  meson_version: '>=0.55.0',
+)
 
 cc = meson.get_compiler('c')
 
+if cc.has_argument('--std=gnu99')
+  add_project_arguments('--std=gnu99', language: ['c'])
+elif cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
+
 lzma_cflags = ['-DHAVE_CONFIG_H', '-DTUKLIB_SYMBOL_PREFIX=lzma_', '-DLZMA_API_STATIC']
 
 cdata = configuration_data()

subprojects/packagefiles/zlib-1.3.1/meson.build

@@ -1,7 +1,15 @@
-project('zlib', 'c', version : '1.3.1', license : 'zlib')
+project('zlib', 'c',
+  version : '1.3.1',
+  license : 'zlib',
+  meson_version: '>=0.55.0',
+)
 
 cc = meson.get_compiler('c')
 
+if cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
+
 link_args = []
 compile_args = []
 if cc.get_argument_syntax() == 'msvc'

subprojects/rizin-shell-parser/meson.build

@@ -1,7 +1,14 @@
 project('rizin-shell-parser', 'c',
-  license : [ 'LGPL']
+  license: 'LGPL-3.0-only',
+  meson_version: '>=0.55.0',
 )
 
+cc = meson.get_compiler('c')
+
+if cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
+
 tree_sitter_dep = dependency('tree-sitter')
 grammar_js = files('grammar.js')
 tree_sitter_wrap_py = files('meson_tree_sitter_generate.py')

subprojects/rzar/meson.build

@@ -1,12 +1,21 @@
 project('rzar', 'c',
-  license : [ 'LGPL']
+  license: 'LGPL-3.0-only',
+  meson_version: '>=0.55.0',
 )
 
 # handle ar dependency
 ar_files = [
   'ar.c'
 ]
 
+cc = meson.get_compiler('c')
+
+if cc.has_argument('--std=gnu99')
+  add_project_arguments('--std=gnu99', language: ['c'])
+elif cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
+
 rz_util_dep = dependency('rz_util')
 ar_inc = [include_directories(['.'])]
 

subprojects/rzgdb/meson.build

@@ -1,5 +1,12 @@
 project('rzw32dbg_wrap', 'c')
 
+cc = meson.get_compiler('c')
+
+if cc.has_argument('--std=gnu99')
+  add_project_arguments('--std=gnu99', language: ['c'])
+elif cc.has_argument('--std=c99')
+  add_project_arguments('--std=c99', language: ['c'])
+endif
 
 gdb_files = [
   'src/arch.c',