commit cd9b1c5826323f8035a10513c832cc1a0d351247
author Ed Tanous <etanous@nvidia.com> Tue Apr 22 08:59:45 2025 -0700
committer Ed Tanous <ed@tanous.net> Mon May 19 16:19:25 2025 +0000
tree 31e6bc55b6de33823ab5ac4bff31b4d10ce51cba
parent 55968b12e1e0aaaf0e70215e47d8a93706dab21b

Make pip buildable

This package would be very useful if able to be built with pip.  This
commit makes libcper usable from python with
git clone git@github.com:openbmc/libcper.git
pip install libcper

The API at the moment is primitive, and only supports the parse api.  An
example of its usage is included.

Change-Id: I944565c71f616735a738bcc4f815d25251ed27bb
Signed-off-by: Ed Tanous <etanous@nvidia.com>

meson.build

diff --git a/meson.build b/meson.build
index 4240cd3..ede0bf1 100644
--- a/meson.build
+++ b/meson.build
@@ -2,10 +2,9 @@
     'libcper',
     'c',
     version: '0.1',
-    meson_version: '>=1.1.1',
+    meson_version: '>=1.2.0',
     default_options: [
         'c_std=c18',
-        'cpp_std=c++23',
         'tests=' + (meson.is_subproject() ? 'disabled' : 'enabled'),
         'warning_level=2',
         'werror=true',
@@ -74,7 +73,11 @@
 
 cc = meson.get_compiler('c')
 
-json_c_dep = dependency('json-c')
+json_c = dependency('json-c', default_options: {'warning_level': '0'})
+json_c_dep = declare_dependency(
+    include_directories: include_directories('subprojects'),
+    dependencies: json_c,
+)
 libcper_include = ['include']
 libcper_include_dir = include_directories(libcper_include, is_system: true)
 
@@ -89,6 +92,8 @@
 
 subdir('include')
 
+install = get_option('install').allowed()
+
 libcper_parse = library(
     'cper-parse',
     libcper_parse_sources,
@@ -97,8 +102,7 @@
     include_directories: libcper_include_dir,
     c_args: '-Wno-address-of-packed-member',
     dependencies: [json_c_dep],
-    install: true,
-    install_dir: get_option('libdir'),
+    install: install,
 )
 libcper_parse_dep = declare_dependency(
     include_directories: libcper_include_dir,
@@ -117,20 +121,21 @@
     include_directories: libcper_include_dir,
     dependencies: [json_c_dep],
     link_with: [libcper_parse],
-    install: true,
-    install_dir: get_option('libdir'),
+    install: install,
 )
 libcper_generate_dep = declare_dependency(
     include_directories: libcper_include_dir,
     link_with: libcper_generate,
 )
 
-import('pkgconfig').generate(
-    libcper_parse,
-    name: meson.project_name(),
-    version: meson.project_version(),
-    description: 'C bindings for parsing CPER',
-)
+if get_option('pkgconfig').allowed()
+    import('pkgconfig').generate(
+        libcper_parse,
+        name: meson.project_name(),
+        version: meson.project_version(),
+        description: 'C bindings for parsing CPER',
+    )
+endif
 
 if get_option('utility').allowed()
     executable(
@@ -139,7 +144,7 @@
         include_directories: libcper_include_dir,
         dependencies: [json_c_dep],
         link_with: [libcper_parse, libcper_generate],
-        install: true,
+        install: install,
         install_dir: get_option('bindir'),
     )
 
@@ -149,7 +154,7 @@
         edk_sources,
         include_directories: libcper_include_dir,
         link_with: [libcper_parse, libcper_generate],
-        install: true,
+        install: install,
         install_dir: get_option('bindir'),
     )
 endif
@@ -161,3 +166,14 @@
         subdir('tests')
     endif
 endif
+
+if get_option('python').allowed()
+    py = import('python').find_installation(pure: false)
+    py.extension_module(
+        'cper',
+        'pycper.c',
+        c_args: ['-DLIBCPER_PYTHON'],
+        dependencies: [libcper_parse_dep, json_c_dep],
+        install: true,
+    )
+endif