From: Robert Yang <liezhi.yang@windriver.com>
Date: Tue, 8 Jan 2019 09:42:52 +0000 (+0800)
Subject: glibc-site_2.28.bb: Add it for speeding up do_configure
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=625dc853b0c953a4e066d9088796886f6d0b5103;p=thirdparty%2Fopenembedded%2Fopenembedded-core-contrib.git

glibc-site_2.28.bb: Add it for speeding up do_configure

* How to generate site_config/funcs:
  - Do a world build and save autoconf cache values to a directory such as
    /tmp/saved_ac_cv:
    1) Add the following line to local.conf
       MACHINE="qemux86"
       EXTRA_OECONF_append = " --cache-file=/tmp/saved_ac_cv/${TARGET_ARCH}/${PN}-cache"

    2) Do a world build
       $ bitbake world

    3) Find out the top 100 used functions, these functions are used by about more
       than 20 recipes in a world build.
       $ find /tmp/i586/ /tmp/qemux86/  -name '*_cache_config' -exec cat {} \; | \
            grep '^ac_cv_func_' | awk -F= '{print $1}' | sed 's/^ac_cv_func_//' | \
            sort | uniq -c | sort -n | awk '{print $2}' | tail -n 100 | sort -o /tmp/target_funcs

 - Find out glibc functions
   $ grep '^    ' /path/to/2.28-r0/build-i586-poky-linux/libc.map | sed -e 's/;/\n/g' | \
        sed -e 's/^ *//g' -e '/^$/d' | sort -o /tmp/libc.map

 - Get the common funcs in both /tmp/libc.map and /tmp/target_funcs
   $ comm -1 -2 /tmp/libc.map /tmp/target_funcs > site_config/funcs

* How to generate site_config/headers:
  - Find out the top 100 used headers, these functions are used by about more
    than 20 recipes in a world build.
    $ find /tmp/i586/ /tmp/qemux86/ -name '*_cache_config' -exec cat {} \; | \
        grep '^ac_cv_header_' | awk -F= '{print $1}' | sed 's/^ac_cv_header_//' | \
        sort | uniq -c | sort -n | awk '{print $2}' | tail -n 100 | sort -o /tmp/target_headers

 - Find out glibc headers
   $ find tmp/work/i586-poky-linux/glibc/2.28-r0/git/include/ -name '*.h' | \
        sed -e 's#.*git/include/##' | sort -o /tmp/libc_headers_orig

   $ cat /tmp/libc_headers_orig | sed -e 's#.*git/include/##' -e 's#/#_#g' -e 's#\.#_#g' | sort -o /tmp/libc_headers

   $ comm -1 -2 /tmp/target_headers /tmp/libc_headers > /tmp/tr_headers

   $ for i in `cat /tmp/libc_headers_orig`; do
        i_tr=`echo $i | sed -e 's#.*git/include/##' -e 's#/#_#g' -e 's#\.#_#g'`
        if grep -q -E "^$i_tr$" /tmp/tr_headers; then
            echo $i
        fi
    done > site_config/headers

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
---

diff --git a/meta/recipes-core/glibc-site/glibc-site_2.28.bb b/meta/recipes-core/glibc-site/glibc-site_2.28.bb
new file mode 100644
index 00000000000..937209886c1
--- /dev/null
+++ b/meta/recipes-core/glibc-site/glibc-site_2.28.bb
@@ -0,0 +1,21 @@
+SUMMARY = "Create glibc site config for speeding up do_configure"
+
+# The LICENSE is the same as glibc
+LICENSE = "GPLv2 & LGPLv2.1"
+SECTION = "libs"
+
+INHIBIT_DEFAULT_DEPS = "1"
+
+DEPENDS = "virtual/${TARGET_PREFIX}gcc virtual/${TARGET_PREFIX}compilerlibs virtual/libc"
+
+inherit autotools nopackages
+
+do_compile() {
+    :
+}
+
+do_install() {
+    :
+}
+
+BBCLASSEXTEND = "nativesdk"
diff --git a/meta/recipes-core/glibc-site/site_config/funcs b/meta/recipes-core/glibc-site/site_config/funcs
new file mode 100644
index 00000000000..d80bb1fdd7f
--- /dev/null
+++ b/meta/recipes-core/glibc-site/site_config/funcs
@@ -0,0 +1,66 @@
+bind_textdomain_codeset
+clock_gettime
+fcntl
+fork
+ftruncate
+getaddrinfo
+getcwd
+geteuid
+getgrgid_r
+gethostbyname
+getline
+getopt_long_only
+getpagesize
+getpwuid_r
+gettimeofday
+getuid
+localtime_r
+mbrtowc
+memcpy
+memmove
+mempcpy
+memset
+mkstemp
+mmap
+mprotect
+nl_langinfo
+pipe
+poll
+putenv
+raise
+readlink
+realpath
+select
+setenv
+setlocale
+setresuid
+sigaction
+snprintf
+socket
+stpcpy
+strcasecmp
+strchr
+strdup
+strerror
+strerror_r
+strftime
+strncasecmp
+strndup
+strnlen
+strrchr
+strstr
+strtol
+strtoul
+symlink
+sysconf
+towlower
+tsearch
+unsetenv
+vasprintf
+vfork
+vprintf
+vsnprintf
+waitpid
+wcrtomb
+wcslen
+wcsnlen
diff --git a/meta/recipes-core/glibc-site/site_config/headers b/meta/recipes-core/glibc-site/site_config/headers
new file mode 100644
index 00000000000..871466d77fb
--- /dev/null
+++ b/meta/recipes-core/glibc-site/site_config/headers
@@ -0,0 +1,64 @@
+alloca.h
+arpa/inet.h
+byteswap.h
+ctype.h
+dirent.h
+dlfcn.h
+endian.h
+errno.h
+execinfo.h
+fcntl.h
+features.h
+float.h
+getopt.h
+grp.h
+iconv.h
+inttypes.h
+langinfo.h
+libintl.h
+limits.h
+locale.h
+malloc.h
+math.h
+memory.h
+netdb.h
+netinet/in.h
+poll.h
+pthread.h
+pwd.h
+search.h
+signal.h
+stdio_ext.h
+stdlib.h
+string.h
+strings.h
+stropts.h
+sys/cdefs.h
+sys/file.h
+sys/ioctl.h
+syslog.h
+sys/mman.h
+sys/param.h
+sys/poll.h
+sys/prctl.h
+sys/resource.h
+sys/select.h
+sys/socket.h
+sys/stat.h
+sys/statvfs.h
+sys/sysctl.h
+sys/sysmacros.h
+sys/time.h
+sys/times.h
+sys/types.h
+sys/uio.h
+sys/un.h
+sys/utsname.h
+sys/wait.h
+sys/xattr.h
+termios.h
+time.h
+unistd.h
+utime.h
+wchar.h
+wctype.h
diff --git a/meta/recipes-core/glibc-site/site_config/types b/meta/recipes-core/glibc-site/site_config/types
new file mode 100644
index 00000000000..178bd85a00b
--- /dev/null
+++ b/meta/recipes-core/glibc-site/site_config/types
@@ -0,0 +1,21 @@
+char
+char *
+double
+float
+int
+long
+long double
+long int
+long long
+long long int
+short
+short int
+signed char
+unsigned char
+unsigned int
+unsigned long
+unsigned long int
+unsigned long long int
+unsigned short
+unsigned short int
+void *