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[glib] Meson: Add missing options and conform to naming guidelines

commit 62c476842387a472cbff9f9b9f48ebb180543775
Author: Xavier Claessens <xavier claessens collabora com>
Date:   Tue Nov 28 10:44:04 2017 -0500

    Meson: Add missing options and conform to naming guidelines
    
    https://bugzilla.gnome.org/show_bug.cgi?id=790837

 config.h.meson                     |    3 -
 docs/reference/gio/meson.build     |    4 +-
 docs/reference/glib/meson.build    |    4 +-
 docs/reference/gobject/meson.build |    4 +-
 gio/meson.build                    |    5 +-
 glib/libcharset/meson.build        |    2 +-
 meson.build                        |  124 +++++++++++++++++++++++++----------
 meson_options.txt                  |   77 +++++++++++++++++++----
 8 files changed, 162 insertions(+), 61 deletions(-)
---
diff --git a/config.h.meson b/config.h.meson
index 3f310b3..2350fd3 100644
--- a/config.h.meson
+++ b/config.h.meson
@@ -352,9 +352,6 @@
 /* Define to 1 if libselinux is available */
 #mesondefine HAVE_SELINUX
 
-/* Define to 1 if you have the <selinux/selinux.h> header file. */
-#mesondefine HAVE_SELINUX_SELINUX_H
-
 /* Define to 1 if you have the `sendmmsg' function. */
 #mesondefine HAVE_SENDMMSG
 
diff --git a/docs/reference/gio/meson.build b/docs/reference/gio/meson.build
index 8e3a24d..33d1557 100644
--- a/docs/reference/gio/meson.build
+++ b/docs/reference/gio/meson.build
@@ -1,4 +1,4 @@
-if get_option('with-docs') != 'no'
+if get_option('gtk_doc')
   subdir('xml')
 
   ignore_headers = [
@@ -205,7 +205,7 @@ if get_option('with-docs') != 'no'
 endif
 
 
-if get_option('with-man') != 'no' and xsltproc.found()
+if get_option('man')
   manpages = ['gapplication', 'gio-querymodules', 'glib-compile-schemas',
               'glib-compile-resources', 'gsettings', 'gresource', 'gdbus',
               'gio', 'gdbus-codegen']
diff --git a/docs/reference/glib/meson.build b/docs/reference/glib/meson.build
index 271574d..f0f915e 100644
--- a/docs/reference/glib/meson.build
+++ b/docs/reference/glib/meson.build
@@ -1,4 +1,4 @@
-if get_option('with-docs') != 'no'
+if get_option('gtk_doc')
   subdir('xml')
 
   ignore_headers = [
@@ -145,7 +145,7 @@ if get_option('with-docs') != 'no'
                install: true)
 endif
 
-if get_option('with-man') != 'no' and xsltproc.found()
+if get_option('man')
   manpages = ['glib-gettextize', 'gtester', 'gtester-report']
   foreach page : manpages
     custom_target(page + '-man',
diff --git a/docs/reference/gobject/meson.build b/docs/reference/gobject/meson.build
index ea998fa..de46cf9 100644
--- a/docs/reference/gobject/meson.build
+++ b/docs/reference/gobject/meson.build
@@ -1,4 +1,4 @@
-if get_option('with-docs') != 'no'
+if get_option('gtk_doc')
   subdir('xml')
 
   ignore_headers = [
@@ -109,7 +109,7 @@ if get_option('with-docs') != 'no'
   )
 endif
 
-if get_option('with-man') != 'no' and xsltproc.found()
+if get_option('man')
   manpages = ['glib-mkenums', 'glib-genmarshal', 'gobject-query']
   foreach page : manpages
     custom_target(page + '-man',
diff --git a/gio/meson.build b/gio/meson.build
index b6ef138..d7dcfa5 100644
--- a/gio/meson.build
+++ b/gio/meson.build
@@ -733,10 +733,9 @@ libgio = shared_library('gio-2.0',
   link_with : internal_deps,
   #libgio_2_0_la_LDFLAGS = $(GLIB_LINK_FLAGS)',
   #  '$(gio_win32_res_ldflag)',
-  #$(SELINUX_LIBS)
-  #$(XATTR_LIBS)
   dependencies : [libintl, libz_dep, libdl_dep, libmount_dep, libglib_dep,
-                  libgobject_dep, libgmodule_dep] + platform_deps + network_libs,
+                  libgobject_dep, libgmodule_dep, selinux_dep, xattr_dep,
+                  platform_deps, network_libs],
   c_args : gio_c_args,
   # intl.lib is not compatible with SAFESEH
   link_args : noseh_link_args,
diff --git a/glib/libcharset/meson.build b/glib/libcharset/meson.build
index 9e16c35..be4a790 100644
--- a/glib/libcharset/meson.build
+++ b/glib/libcharset/meson.build
@@ -1,4 +1,4 @@
-charsetalias_dir = get_option('charsetalias-dir')
+charsetalias_dir = get_option('charsetalias_dir')
 if charsetalias_dir == ''
   charsetalias_dir = get_option('libdir')
 endif
diff --git a/meson.build b/meson.build
index 2839f03..2426ddd 100644
--- a/meson.build
+++ b/meson.build
@@ -54,7 +54,10 @@ glib_libdir = join_paths(glib_prefix, get_option('libdir'))
 glib_datadir = join_paths(glib_prefix, get_option('datadir'))
 glib_pkgdatadir = join_paths(glib_datadir, 'glib-2.0')
 glib_includedir = join_paths(glib_prefix, get_option('includedir'))
-glib_giomodulesdir = join_paths(glib_libdir, 'gio', 'modules')
+glib_giomodulesdir = get_option('gio_module_dir')
+if glib_giomodulesdir == ''
+  glib_giomodulesdir = join_paths(glib_libdir, 'gio', 'modules')
+endif
 
 glib_pkgconfigreldir = join_paths(glib_libdir, 'pkgconfig')
 
@@ -1376,10 +1379,6 @@ endif
 
 # Tests for iconv
 #
-# First, we check if the C library provides iconv, then GNU libiconv, then
-# a native implementation
-# FIXME: add option as well
-#
 # USE_LIBICONV_GNU: Using GNU libiconv
 # USE_LIBICONV_NATIVE: Using a native impl of iconv in a separate library
 #
@@ -1390,22 +1389,35 @@ endif
 if host_system == 'windows'
   libiconv = []
   glib_conf.set('USE_LIBICONV_NATIVE', true)
-# Check C library; never check MinGW C library
-elif cc.has_function('iconv_open')
-  libiconv = []
-# Check for libiconv
-elif cc.has_header_symbol('iconv.h', 'libiconv_open')
-  glib_conf.set('USE_LIBICONV_GNU', true)
-  libiconv = [cc.find_library('iconv')]
-# Check for a custom iconv implementation
-elif cc.has_header_symbol('iconv.h', 'iconv_open')
-  glib_conf.set('USE_LIBICONV_NATIVE', true)
-  libiconv = [cc.find_library('iconv')]
 else
-  error('No iconv() implementation found in C library or libiconv')
+  found_iconv = false
+  iconv_opt = get_option('iconv')
+  if iconv_opt == 'libc'
+    if cc.has_function('iconv_open')
+      libiconv = []
+      found_iconv = true
+    endif
+  elif iconv_opt == 'gnu'
+    if cc.has_header_symbol('iconv.h', 'libiconv_open')
+      glib_conf.set('USE_LIBICONV_GNU', true)
+      libiconv = [cc.find_library('iconv')]
+      found_iconv = true
+    endif
+  elif iconv_opt == 'native'
+    if cc.has_header_symbol('iconv.h', 'iconv_open')
+      glib_conf.set('USE_LIBICONV_NATIVE', true)
+      libiconv = [cc.find_library('iconv')]
+      found_iconv = true
+    endif
+  endif
+
+  if not found_iconv
+    error('No iconv() implementation found in C library or libiconv')
+  endif
+
 endif
 
-if get_option('with-pcre') == 'internal'
+if get_option('internal_pcre')
   pcre = []
   use_system_pcre = false
 else
@@ -1492,15 +1504,12 @@ xgettext = find_program('xgettext', required : false)
 # libmount is only used by gio, but we need to fetch the libs to generate the
 # pkg-config file below
 libmount_dep = []
-libmount_opt = get_option('enable-libmount')
-if host_system == 'linux' and libmount_opt != 'no'
+if get_option('libmount')
   libmount_dep = [dependency('mount', version : '>=2.28', required : false)]
   if not libmount_dep[0].found()
-    libmount_dep = [cc.find_library('mount', required : false)]
-    libmount_h = cc.has_header('libmount/libmount.h')
-    libmount_needed = libmount_opt == 'yes' and host_system == 'linux'
-    if libmount_needed and (not libmount_dep[0].found() or not libmount_h)
-      error('Need libmount but couldn\'t find it')
+    libmount_dep = [cc.find_library('mount', required : true)]
+    if not cc.has_header('libmount/libmount.h')
+      error('libmount support needs libmount/libmount.h header')
     endif
   endif
 endif
@@ -1509,6 +1518,52 @@ if host_system == 'windows'
   winsock2 = cc.find_library('ws2_32')
 endif
 
+selinux_dep = []
+if get_option('selinux')
+  selinux_dep = [dependency('libselinux')]
+  glib_conf.set('SELINUX_LIBS', '-lselinux')
+  glib_conf.set('HAVE_SELINUX', 1)
+endif
+
+xattr_dep = []
+if get_option('xattr')
+  # either glibc or libattr can provide xattr support
+  # for both of them, we check for getxattr being in
+  # the library and a valid xattr header.
+
+  # try glibc
+  if cc.has_function('getxattr') and cc.has_header('sys/xattr.h')
+    glib_conf.set('HAVE_SYS_XATTR_H', 1)
+    glib_conf_prefix = glib_conf_prefix + '#define @0@ 1\n'.format('HAVE_SYS_XATTR_H')
+  #failure. try libattr
+  elif cc.has_header_symbol('attr/xattr.h', 'getxattr')
+    glib_conf.set('HAVE_ATTR_XATTR_H', 1)
+    glib_conf_prefix = glib_conf_prefix + '#define @0@ 1\n'.format('HAVE_ATTR_XATTR_H')
+    xattr_dep = [cc.find_library('xattr')]
+  else
+    error('No getxattr implementation found in C library or libxattr')
+  endif
+
+  glib_conf.set('HAVE_XATTR', 1)
+  if cc.compiles(glib_conf_prefix + '''
+                 #include <stdio.h>
+                 #ifdef HAVE_SYS_TYPES_H
+                 #include <sys/types.h>
+                 #endif
+                 #ifdef HAVE_SYS_XATTR_H
+                 #include <sys/xattr.h>
+                 #elif HAVE_ATTR_XATTR_H
+                 #include <attr/xattr.h>
+                 #endif
+
+                 int main (void) {
+                   ssize_t len = getxattr("", "", NULL, 0, 0, XATTR_NOFOLLOW);
+                 }''',
+                 name : 'XATTR_NOFOLLOW')
+    glib_conf.set('HAVE_XATTR_NOFOLLOW', 1)
+  endif
+endif
+
 python = import('python3').find_python()
 
 # Determine which user environment-dependent files that we want to install
@@ -1537,17 +1592,17 @@ endif
 if use_system_pcre
   glib_conf.set('PCRE_LIBS', '-lpcre')
 endif
-if libmount_dep.length() == 1 and libmount_dep[0].found()
+if libmount_dep.length() != 0
   glib_conf.set('LIBMOUNT_LIBS', '-lmount')
   glib_conf.set('HAVE_LIBMOUNT', 1)
 endif
-glib_conf.set('GIO_MODULE_DIR', '${libdir}/gio/modules')
+glib_conf.set('GIO_MODULE_DIR', glib_giomodulesdir)
 # FIXME: Missing:
-# @G_MODULE_LIBS@ @SELINUX_LIBS@ @COCOA_LIBS@ @CARBON_LIBS@ @G_LIBS_EXTRA@
+# @G_MODULE_LIBS@ @COCOA_LIBS@ @CARBON_LIBS@ @G_LIBS_EXTRA@
 # @PCRE_REQUIRES@ @GLIB_EXTRA_CFLAGS@ @G_THREAD_CFLAGS@
 
 # Tracing: dtrace
-want_dtrace = get_option('enable-dtrace')
+want_dtrace = get_option('dtrace')
 enable_dtrace = false
 
 # Since dtrace support is opt-in we just error out if it was requested but
@@ -1574,11 +1629,11 @@ if want_dtrace
 endif
 
 # systemtap
-want_systemtap = get_option('enable-systemtap')
+want_systemtap = get_option('systemtap')
 enable_systemtap = false
 
 if want_systemtap and enable_dtrace
-  tapset_install_dir = get_option('tapset-install-dir')
+  tapset_install_dir = get_option('tapset_install_dir')
   if tapset_install_dir == ''
     tapset_install_dir = join_paths(get_option('datadir'), 'systemtap/tapset', host_machine.cpu_family())
   endif
@@ -1656,11 +1711,8 @@ if host_system == 'windows'
   install_headers([ 'msvc_recommended_pragmas.h' ], subdir : 'glib-2.0')
 endif
 
-if get_option('with-man') != 'no'
-  xsltproc = find_program('xsltproc', required : false)
-  if not xsltproc.found() and get_option('with-man') == 'yes'
-    error('man pages enabled and xsltproc not found')
-  endif
+if get_option('man')
+  xsltproc = find_program('xsltproc', required : true)
   xsltproc_command = [
     xsltproc,
     '--nonet',
diff --git a/meson_options.txt b/meson_options.txt
index 9284fff..4504c68 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,12 +1,65 @@
-option('with-docs', type : 'combo', choices : ['auto', 'yes', 'no'], value : 'auto')
-option('with-man', type : 'combo', choices : ['auto', 'yes', 'no'], value : 'auto')
-option('with-pcre', type : 'combo', choices : ['system', 'internal'], value : 'system')
-option('enable-libmount', type : 'combo', choices : ['auto', 'yes', 'no'], value : 'yes')
-option('enable-dtrace', type : 'boolean', value : false,
-  description : 'include tracing support for dtrace')
-option('enable-systemtap', type : 'boolean', value : false,
-  description : 'include tracing support for systemtap')
-option('tapset-install-dir', type : 'string', value : '',
-  description : 'path where systemtap tapsets are installed')
-option('charsetalias-dir', type : 'string', value : '',
-  description : 'directory for charset.alias file (libdir by default)')
+option('runtime_libdir',
+       type : 'string',
+       value : '',
+       description : 'install runtime libraries relative to libdir')
+
+option('iconv',
+       type : 'combo',
+       choices : ['libc', 'gnu', 'native'],
+       value : 'libc',
+       description : 'iconv implementation to use (\'libc\' = \'Part of the C stdlib\'; \'gnu\' = \'GNU\'s 
iconv\'; \'native\' = \'A separate iconv\')')
+
+option('charsetalias_dir',
+       type : 'string',
+       value : '',
+       description : 'directory for charset.alias dir (default to \'libdir\' if unset)')
+
+option('gio_module_dir',
+       type : 'string',
+       value : '',
+       description : 'load gio modules from this directory (default to \'libdir/gio/modules\' if unset)')
+
+option('selinux',
+       type : 'boolean',
+       value : true,
+       description : 'build with selinux support')
+
+option('xattr',
+       type : 'boolean',
+       value : true,
+       description : 'build with xattr support')
+
+option('libmount',
+       type : 'boolean',
+       value : true,
+       description : 'build with libmount support')
+
+option('internal_pcre',
+       type : 'boolean',
+       value : false,
+       description : 'whether to use internal PCRE')
+
+option('man',
+       type : 'boolean',
+       value : false,
+       description : 'generate man pages (requires xsltproc)')
+
+option('dtrace',
+       type : 'boolean',
+       value : false,
+       description : 'include tracing support for dtrace')
+
+option('systemtap',
+       type : 'boolean',
+       value : false,
+       description : 'include tracing support for systemtap')
+
+option('tapset_install_dir',
+       type : 'string',
+       value : '',
+       description : 'path where systemtap tapsets are installed')
+
+option('gtk_doc',
+       type : 'boolean',
+       value : false,
+       description : 'use gtk-doc to build documentation')
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