[gentoo-commits] repo/gentoo:master commit in: sys-devel/flex/, sys-devel/flex/files/

[Thomas Deutschmann]

commit:     aa6c077d00c3a21b75ae646421aefadcad527f80
Author:     Thomas Deutschmann <whissi <AT> gentoo <DOT> org>
AuthorDate: Fri Oct 13 20:16:10 2017 +0000
Commit:     Thomas Deutschmann <whissi <AT> gentoo <DOT> org>
CommitDate: Fri Oct 13 20:19:23 2017 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=aa6c077d

sys-devel/flex: Rev bump to fix multiple problems

Closes: https://bugs.gentoo.org/628744
Closes: https://bugs.gentoo.org/625508
See: https://bugs.gentoo.org/632523
Package-Manager: Portage-2.3.10, Repoman-2.3.3

 .../flex-2.6.4-fix-build-with-glibc2.6+.patch      | 767 +++++++++++++++++++++
 sys-devel/flex/files/flex-2.6.4-libobjdir.patch    |  26 +
 sys-devel/flex/flex-2.6.4-r1.ebuild                |  85 +++
 3 files changed, 878 insertions(+)

diff --git a/sys-devel/flex/files/flex-2.6.4-fix-build-with-glibc2.6+.patch b/sys-devel/flex/files/flex-2.6.4-fix-build-with-glibc2.6+.patch
new file mode 100644
index 00000000000..328b5752456
--- /dev/null
+++ b/sys-devel/flex/files/flex-2.6.4-fix-build-with-glibc2.6+.patch
@@ -0,0 +1,767 @@
+Backport of https://github.com/westes/flex/commit/24fd0551333e7eded87b64dd36062da3df2f6380
+
+Bug: https://bugs.gentoo.org/628744
+
+--- a/configure
++++ b/configure
+@@ -3605,13 +3605,142 @@ test -z "$SED" && SED=sed
+ Xsed="$SED -e 1s/^X//"
+ 
+ 
++ac_ext=c
++ac_cpp='$CPP $CPPFLAGS'
++ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
++ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
++ac_compiler_gnu=$ac_cv_c_compiler_gnu
++{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
++$as_echo_n "checking how to run the C preprocessor... " >&6; }
++# On Suns, sometimes $CPP names a directory.
++if test -n "$CPP" && test -d "$CPP"; then
++  CPP=
++fi
++if test -z "$CPP"; then
++  if ${ac_cv_prog_CPP+:} false; then :
++  $as_echo_n "(cached) " >&6
++else
++      # Double quotes because CPP needs to be expanded
++    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
++    do
++      ac_preproc_ok=false
++for ac_c_preproc_warn_flag in '' yes
++do
++  # Use a header file that comes with gcc, so configuring glibc
++  # with a fresh cross-compiler works.
++  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
++  # <limits.h> exists even on freestanding compilers.
++  # On the NeXT, cc -E runs the code through the compiler's parser,
++  # not just through cpp. "Syntax error" is here to catch this case.
++  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
++/* end confdefs.h.  */
++#ifdef __STDC__
++# include <limits.h>
++#else
++# include <assert.h>
++#endif
++		     Syntax error
++_ACEOF
++if ac_fn_c_try_cpp "$LINENO"; then :
++
++else
++  # Broken: fails on valid input.
++continue
++fi
++rm -f conftest.err conftest.i conftest.$ac_ext
++
++  # OK, works on sane cases.  Now check whether nonexistent headers
++  # can be detected and how.
++  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
++/* end confdefs.h.  */
++#include <ac_nonexistent.h>
++_ACEOF
++if ac_fn_c_try_cpp "$LINENO"; then :
++  # Broken: success on invalid input.
++continue
++else
++  # Passes both tests.
++ac_preproc_ok=:
++break
++fi
++rm -f conftest.err conftest.i conftest.$ac_ext
++
++done
++# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
++rm -f conftest.i conftest.err conftest.$ac_ext
++if $ac_preproc_ok; then :
++  break
++fi
+ 
++    done
++    ac_cv_prog_CPP=$CPP
+ 
++fi
++  CPP=$ac_cv_prog_CPP
++else
++  ac_cv_prog_CPP=$CPP
++fi
++{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
++$as_echo "$CPP" >&6; }
++ac_preproc_ok=false
++for ac_c_preproc_warn_flag in '' yes
++do
++  # Use a header file that comes with gcc, so configuring glibc
++  # with a fresh cross-compiler works.
++  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
++  # <limits.h> exists even on freestanding compilers.
++  # On the NeXT, cc -E runs the code through the compiler's parser,
++  # not just through cpp. "Syntax error" is here to catch this case.
++  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
++/* end confdefs.h.  */
++#ifdef __STDC__
++# include <limits.h>
++#else
++# include <assert.h>
++#endif
++		     Syntax error
++_ACEOF
++if ac_fn_c_try_cpp "$LINENO"; then :
+ 
++else
++  # Broken: fails on valid input.
++continue
++fi
++rm -f conftest.err conftest.i conftest.$ac_ext
+ 
++  # OK, works on sane cases.  Now check whether nonexistent headers
++  # can be detected and how.
++  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
++/* end confdefs.h.  */
++#include <ac_nonexistent.h>
++_ACEOF
++if ac_fn_c_try_cpp "$LINENO"; then :
++  # Broken: success on invalid input.
++continue
++else
++  # Passes both tests.
++ac_preproc_ok=:
++break
++fi
++rm -f conftest.err conftest.i conftest.$ac_ext
+ 
++done
++# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
++rm -f conftest.i conftest.err conftest.$ac_ext
++if $ac_preproc_ok; then :
+ 
++else
++  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
++$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
++as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
++See \`config.log' for more details" "$LINENO" 5; }
++fi
+ 
++ac_ext=c
++ac_cpp='$CPP $CPPFLAGS'
++ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
++ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
++ac_compiler_gnu=$ac_cv_c_compiler_gnu
+ 
+ 
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+@@ -3744,91 +3873,208 @@ $as_echo "$ac_cv_path_EGREP" >&6; }
+  EGREP="$ac_cv_path_EGREP"
+ 
+ 
+-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fgrep" >&5
+-$as_echo_n "checking for fgrep... " >&6; }
+-if ${ac_cv_path_FGREP+:} false; then :
++{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
++$as_echo_n "checking for ANSI C header files... " >&6; }
++if ${ac_cv_header_stdc+:} false; then :
+   $as_echo_n "(cached) " >&6
+ else
+-  if echo 'ab*c' | $GREP -F 'ab*c' >/dev/null 2>&1
+-   then ac_cv_path_FGREP="$GREP -F"
+-   else
+-     if test -z "$FGREP"; then
+-  ac_path_FGREP_found=false
+-  # Loop through the user's path and test for each of PROGNAME-LIST
+-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+-for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+-do
+-  IFS=$as_save_IFS
+-  test -z "$as_dir" && as_dir=.
+-    for ac_prog in fgrep; do
+-    for ac_exec_ext in '' $ac_executable_extensions; do
+-      ac_path_FGREP="$as_dir/$ac_prog$ac_exec_ext"
+-      as_fn_executable_p "$ac_path_FGREP" || continue
+-# Check for GNU ac_path_FGREP and select it if it is found.
+-  # Check for GNU $ac_path_FGREP
+-case `"$ac_path_FGREP" --version 2>&1` in
+-*GNU*)
+-  ac_cv_path_FGREP="$ac_path_FGREP" ac_path_FGREP_found=:;;
+-*)
+-  ac_count=0
+-  $as_echo_n 0123456789 >"conftest.in"
+-  while :
+-  do
+-    cat "conftest.in" "conftest.in" >"conftest.tmp"
+-    mv "conftest.tmp" "conftest.in"
+-    cp "conftest.in" "conftest.nl"
+-    $as_echo 'FGREP' >> "conftest.nl"
+-    "$ac_path_FGREP" FGREP < "conftest.nl" >"conftest.out" 2>/dev/null || break
+-    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+-    as_fn_arith $ac_count + 1 && ac_count=$as_val
+-    if test $ac_count -gt ${ac_path_FGREP_max-0}; then
+-      # Best one so far, save it but keep looking for a better one
+-      ac_cv_path_FGREP="$ac_path_FGREP"
+-      ac_path_FGREP_max=$ac_count
+-    fi
+-    # 10*(2^10) chars as input seems more than enough
+-    test $ac_count -gt 10 && break
+-  done
+-  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+-esac
++  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
++/* end confdefs.h.  */
++#include <stdlib.h>
++#include <stdarg.h>
++#include <string.h>
++#include <float.h>
+ 
+-      $ac_path_FGREP_found && break 3
+-    done
+-  done
+-  done
+-IFS=$as_save_IFS
+-  if test -z "$ac_cv_path_FGREP"; then
+-    as_fn_error $? "no acceptable fgrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+-  fi
+-else
+-  ac_cv_path_FGREP=$FGREP
+-fi
++int
++main ()
++{
+ 
+-   fi
++  ;
++  return 0;
++}
++_ACEOF
++if ac_fn_c_try_compile "$LINENO"; then :
++  ac_cv_header_stdc=yes
++else
++  ac_cv_header_stdc=no
+ fi
+-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_FGREP" >&5
+-$as_echo "$ac_cv_path_FGREP" >&6; }
+- FGREP="$ac_cv_path_FGREP"
+-
++rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ 
+-test -z "$GREP" && GREP=grep
++if test $ac_cv_header_stdc = yes; then
++  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
++  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
++/* end confdefs.h.  */
++#include <string.h>
+ 
++_ACEOF
++if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
++  $EGREP "memchr" >/dev/null 2>&1; then :
+ 
++else
++  ac_cv_header_stdc=no
++fi
++rm -f conftest*
+ 
++fi
+ 
++if test $ac_cv_header_stdc = yes; then
++  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
++  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
++/* end confdefs.h.  */
++#include <stdlib.h>
+ 
++_ACEOF
++if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
++  $EGREP "free" >/dev/null 2>&1; then :
+ 
++else
++  ac_cv_header_stdc=no
++fi
++rm -f conftest*
+ 
++fi
+ 
++if test $ac_cv_header_stdc = yes; then
++  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
++  if test "$cross_compiling" = yes; then :
++  :
++else
++  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
++/* end confdefs.h.  */
++#include <ctype.h>
++#include <stdlib.h>
++#if ((' ' & 0x0FF) == 0x020)
++# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
++# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
++#else
++# define ISLOWER(c) \
++		   (('a' <= (c) && (c) <= 'i') \
++		     || ('j' <= (c) && (c) <= 'r') \
++		     || ('s' <= (c) && (c) <= 'z'))
++# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
++#endif
+ 
++#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
++int
++main ()
++{
++  int i;
++  for (i = 0; i < 256; i++)
++    if (XOR (islower (i), ISLOWER (i))
++	|| toupper (i) != TOUPPER (i))
++      return 2;
++  return 0;
++}
++_ACEOF
++if ac_fn_c_try_run "$LINENO"; then :
+ 
++else
++  ac_cv_header_stdc=no
++fi
++rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
++  conftest.$ac_objext conftest.beam conftest.$ac_ext
++fi
+ 
++fi
++fi
++{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
++$as_echo "$ac_cv_header_stdc" >&6; }
++if test $ac_cv_header_stdc = yes; then
+ 
++$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+ 
++fi
+ 
++# On IRIX 5.3, sys/types and inttypes.h are conflicting.
++for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
++		  inttypes.h stdint.h unistd.h
++do :
++  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
++ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
++"
++if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
++  cat >>confdefs.h <<_ACEOF
++#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
++_ACEOF
++
++fi
++
++done
++
++
++
++  ac_fn_c_check_header_mongrel "$LINENO" "minix/config.h" "ac_cv_header_minix_config_h" "$ac_includes_default"
++if test "x$ac_cv_header_minix_config_h" = xyes; then :
++  MINIX=yes
++else
++  MINIX=
++fi
++
++
++  if test "$MINIX" = yes; then
+ 
++$as_echo "#define _POSIX_SOURCE 1" >>confdefs.h
+ 
+ 
++$as_echo "#define _POSIX_1_SOURCE 2" >>confdefs.h
++
++
++$as_echo "#define _MINIX 1" >>confdefs.h
++
++  fi
++
++
++  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether it is safe to define __EXTENSIONS__" >&5
++$as_echo_n "checking whether it is safe to define __EXTENSIONS__... " >&6; }
++if ${ac_cv_safe_to_define___extensions__+:} false; then :
++  $as_echo_n "(cached) " >&6
++else
++  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
++/* end confdefs.h.  */
++
++#         define __EXTENSIONS__ 1
++          $ac_includes_default
++int
++main ()
++{
++
++  ;
++  return 0;
++}
++_ACEOF
++if ac_fn_c_try_compile "$LINENO"; then :
++  ac_cv_safe_to_define___extensions__=yes
++else
++  ac_cv_safe_to_define___extensions__=no
++fi
++rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
++fi
++{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_safe_to_define___extensions__" >&5
++$as_echo "$ac_cv_safe_to_define___extensions__" >&6; }
++  test $ac_cv_safe_to_define___extensions__ = yes &&
++    $as_echo "#define __EXTENSIONS__ 1" >>confdefs.h
++
++  $as_echo "#define _ALL_SOURCE 1" >>confdefs.h
++
++  $as_echo "#define _GNU_SOURCE 1" >>confdefs.h
++
++  $as_echo "#define _POSIX_PTHREAD_SEMANTICS 1" >>confdefs.h
++
++  $as_echo "#define _TANDEM_SOURCE 1" >>confdefs.h
++
++
++for ac_header in dlfcn.h
++do :
++  ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default
++"
++if test "x$ac_cv_header_dlfcn_h" = xyes; then :
++  cat >>confdefs.h <<_ACEOF
++#define HAVE_DLFCN_H 1
++_ACEOF
++
++fi
++
++done
+ 
+ 
+ # Check whether --with-gnu-ld was given.
+@@ -6898,288 +7144,6 @@ func_munge_path_list ()
+     esac
+ }
+ 
+-ac_ext=c
+-ac_cpp='$CPP $CPPFLAGS'
+-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
+-$as_echo_n "checking how to run the C preprocessor... " >&6; }
+-# On Suns, sometimes $CPP names a directory.
+-if test -n "$CPP" && test -d "$CPP"; then
+-  CPP=
+-fi
+-if test -z "$CPP"; then
+-  if ${ac_cv_prog_CPP+:} false; then :
+-  $as_echo_n "(cached) " >&6
+-else
+-      # Double quotes because CPP needs to be expanded
+-    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+-    do
+-      ac_preproc_ok=false
+-for ac_c_preproc_warn_flag in '' yes
+-do
+-  # Use a header file that comes with gcc, so configuring glibc
+-  # with a fresh cross-compiler works.
+-  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+-  # <limits.h> exists even on freestanding compilers.
+-  # On the NeXT, cc -E runs the code through the compiler's parser,
+-  # not just through cpp. "Syntax error" is here to catch this case.
+-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+-/* end confdefs.h.  */
+-#ifdef __STDC__
+-# include <limits.h>
+-#else
+-# include <assert.h>
+-#endif
+-		     Syntax error
+-_ACEOF
+-if ac_fn_c_try_cpp "$LINENO"; then :
+-
+-else
+-  # Broken: fails on valid input.
+-continue
+-fi
+-rm -f conftest.err conftest.i conftest.$ac_ext
+-
+-  # OK, works on sane cases.  Now check whether nonexistent headers
+-  # can be detected and how.
+-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+-/* end confdefs.h.  */
+-#include <ac_nonexistent.h>
+-_ACEOF
+-if ac_fn_c_try_cpp "$LINENO"; then :
+-  # Broken: success on invalid input.
+-continue
+-else
+-  # Passes both tests.
+-ac_preproc_ok=:
+-break
+-fi
+-rm -f conftest.err conftest.i conftest.$ac_ext
+-
+-done
+-# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+-rm -f conftest.i conftest.err conftest.$ac_ext
+-if $ac_preproc_ok; then :
+-  break
+-fi
+-
+-    done
+-    ac_cv_prog_CPP=$CPP
+-
+-fi
+-  CPP=$ac_cv_prog_CPP
+-else
+-  ac_cv_prog_CPP=$CPP
+-fi
+-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
+-$as_echo "$CPP" >&6; }
+-ac_preproc_ok=false
+-for ac_c_preproc_warn_flag in '' yes
+-do
+-  # Use a header file that comes with gcc, so configuring glibc
+-  # with a fresh cross-compiler works.
+-  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+-  # <limits.h> exists even on freestanding compilers.
+-  # On the NeXT, cc -E runs the code through the compiler's parser,
+-  # not just through cpp. "Syntax error" is here to catch this case.
+-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+-/* end confdefs.h.  */
+-#ifdef __STDC__
+-# include <limits.h>
+-#else
+-# include <assert.h>
+-#endif
+-		     Syntax error
+-_ACEOF
+-if ac_fn_c_try_cpp "$LINENO"; then :
+-
+-else
+-  # Broken: fails on valid input.
+-continue
+-fi
+-rm -f conftest.err conftest.i conftest.$ac_ext
+-
+-  # OK, works on sane cases.  Now check whether nonexistent headers
+-  # can be detected and how.
+-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+-/* end confdefs.h.  */
+-#include <ac_nonexistent.h>
+-_ACEOF
+-if ac_fn_c_try_cpp "$LINENO"; then :
+-  # Broken: success on invalid input.
+-continue
+-else
+-  # Passes both tests.
+-ac_preproc_ok=:
+-break
+-fi
+-rm -f conftest.err conftest.i conftest.$ac_ext
+-
+-done
+-# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+-rm -f conftest.i conftest.err conftest.$ac_ext
+-if $ac_preproc_ok; then :
+-
+-else
+-  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+-as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
+-See \`config.log' for more details" "$LINENO" 5; }
+-fi
+-
+-ac_ext=c
+-ac_cpp='$CPP $CPPFLAGS'
+-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+-
+-
+-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
+-$as_echo_n "checking for ANSI C header files... " >&6; }
+-if ${ac_cv_header_stdc+:} false; then :
+-  $as_echo_n "(cached) " >&6
+-else
+-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+-/* end confdefs.h.  */
+-#include <stdlib.h>
+-#include <stdarg.h>
+-#include <string.h>
+-#include <float.h>
+-
+-int
+-main ()
+-{
+-
+-  ;
+-  return 0;
+-}
+-_ACEOF
+-if ac_fn_c_try_compile "$LINENO"; then :
+-  ac_cv_header_stdc=yes
+-else
+-  ac_cv_header_stdc=no
+-fi
+-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+-
+-if test $ac_cv_header_stdc = yes; then
+-  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+-/* end confdefs.h.  */
+-#include <string.h>
+-
+-_ACEOF
+-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+-  $EGREP "memchr" >/dev/null 2>&1; then :
+-
+-else
+-  ac_cv_header_stdc=no
+-fi
+-rm -f conftest*
+-
+-fi
+-
+-if test $ac_cv_header_stdc = yes; then
+-  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+-/* end confdefs.h.  */
+-#include <stdlib.h>
+-
+-_ACEOF
+-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+-  $EGREP "free" >/dev/null 2>&1; then :
+-
+-else
+-  ac_cv_header_stdc=no
+-fi
+-rm -f conftest*
+-
+-fi
+-
+-if test $ac_cv_header_stdc = yes; then
+-  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+-  if test "$cross_compiling" = yes; then :
+-  :
+-else
+-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+-/* end confdefs.h.  */
+-#include <ctype.h>
+-#include <stdlib.h>
+-#if ((' ' & 0x0FF) == 0x020)
+-# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+-# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+-#else
+-# define ISLOWER(c) \
+-		   (('a' <= (c) && (c) <= 'i') \
+-		     || ('j' <= (c) && (c) <= 'r') \
+-		     || ('s' <= (c) && (c) <= 'z'))
+-# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+-#endif
+-
+-#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+-int
+-main ()
+-{
+-  int i;
+-  for (i = 0; i < 256; i++)
+-    if (XOR (islower (i), ISLOWER (i))
+-	|| toupper (i) != TOUPPER (i))
+-      return 2;
+-  return 0;
+-}
+-_ACEOF
+-if ac_fn_c_try_run "$LINENO"; then :
+-
+-else
+-  ac_cv_header_stdc=no
+-fi
+-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+-  conftest.$ac_objext conftest.beam conftest.$ac_ext
+-fi
+-
+-fi
+-fi
+-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
+-$as_echo "$ac_cv_header_stdc" >&6; }
+-if test $ac_cv_header_stdc = yes; then
+-
+-$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+-
+-fi
+-
+-# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+-for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+-		  inttypes.h stdint.h unistd.h
+-do :
+-  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+-ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
+-"
+-if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+-  cat >>confdefs.h <<_ACEOF
+-#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+-_ACEOF
+-
+-fi
+-
+-done
+-
+-
+-for ac_header in dlfcn.h
+-do :
+-  ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default
+-"
+-if test "x$ac_cv_header_dlfcn_h" = xyes; then :
+-  cat >>confdefs.h <<_ACEOF
+-#define HAVE_DLFCN_H 1
+-_ACEOF
+-
+-fi
+-
+-done
+-
+-
+-
+ 
+ 
+ # Set options
+--- a/src/config.h.in
++++ b/src/config.h.in
+@@ -207,6 +207,9 @@
+ /* Define to the m4 executable name. */
+ #undef M4
+ 
++/* Define to 1 if your C compiler doesn't accept -c and -o together. */
++#undef NO_MINUS_C_MINUS_O
++
+ /* Name of package */
+ #undef PACKAGE
+ 
+@@ -239,6 +242,28 @@
+ /* Define to 1 if you have the ANSI C header files. */
+ #undef STDC_HEADERS
+ 
++/* Enable extensions on AIX 3, Interix.  */
++#ifndef _ALL_SOURCE
++# undef _ALL_SOURCE
++#endif
++/* Enable GNU extensions on systems that have them.  */
++#ifndef _GNU_SOURCE
++# undef _GNU_SOURCE
++#endif
++/* Enable threading extensions on Solaris.  */
++#ifndef _POSIX_PTHREAD_SEMANTICS
++# undef _POSIX_PTHREAD_SEMANTICS
++#endif
++/* Enable extensions on HP NonStop.  */
++#ifndef _TANDEM_SOURCE
++# undef _TANDEM_SOURCE
++#endif
++/* Enable general extensions on Solaris.  */
++#ifndef __EXTENSIONS__
++# undef __EXTENSIONS__
++#endif
++
++
+ /* Version number of package */
+ #undef VERSION
+ 
+@@ -246,6 +271,16 @@
+    `char[]'. */
+ #undef YYTEXT_POINTER
+ 
++/* Define to 1 if on MINIX. */
++#undef _MINIX
++
++/* Define to 2 if the system does not provide POSIX.1 features except with
++   this defined. */
++#undef _POSIX_1_SOURCE
++
++/* Define to 1 if you need to in order for `stat' and other things to work. */
++#undef _POSIX_SOURCE
++
+ /* Define to empty if `const' does not conform to ANSI C. */
+ #undef const
+ 

diff --git a/sys-devel/flex/files/flex-2.6.4-libobjdir.patch b/sys-devel/flex/files/flex-2.6.4-libobjdir.patch
new file mode 100644
index 00000000000..a652b9236b1
--- /dev/null
+++ b/sys-devel/flex/files/flex-2.6.4-libobjdir.patch
@@ -0,0 +1,26 @@
+https://github.com/westes/flex/commit/24e73c4446841eda8d4ea01298e887059e8c1472
+
+Bug: https://bugs.gentoo.org/625508
+
+--- a/src/Makefile.am
++++ b/src/Makefile.am
+@@ -79,6 +79,8 @@ COMMON_SOURCES = \
+ 
+ LDADD = $(LIBOBJS) @LIBINTL@
+ 
++$(LIBOBJS): $(LIBOBJDIR)$(am__dirstamp)
++
+ include_HEADERS = \
+ 	FlexLexer.h
+ 
+--- a/src/Makefile.in
++++ b/src/Makefile.in
+@@ -1688,6 +1688,8 @@ uninstall-am: uninstall-binPROGRAMS uninstall-includeHEADERS \
+ @CROSS_TRUE@$(stage1flex_OBJECTS): CPPFLAGS=$(CPPFLAGS_FOR_BUILD)
+ @CROSS_TRUE@$(stage1flex_OBJECTS): LDFLAGS=$(LDFLAGS_FOR_BUILD)
+ 
++$(LIBOBJS): $(LIBOBJDIR)$(am__dirstamp)
++
+ skel.c: flex.skl mkskel.sh flexint.h tables_shared.h tables_shared.c
+ 	$(SHELL) $(srcdir)/mkskel.sh $(srcdir) $(m4) $(VERSION) > $@.tmp
+ 	mv $@.tmp $@

diff --git a/sys-devel/flex/flex-2.6.4-r1.ebuild b/sys-devel/flex/flex-2.6.4-r1.ebuild
new file mode 100644
index 00000000000..b221d35914b
--- /dev/null
+++ b/sys-devel/flex/flex-2.6.4-r1.ebuild
@@ -0,0 +1,85 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="6"
+
+inherit eutils flag-o-matic libtool multilib-minimal
+
+DESCRIPTION="The Fast Lexical Analyzer"
+HOMEPAGE="https://flex.sourceforge.net/ https://github.com/westes/flex"
+SRC_URI="https://github.com/westes/${PN}/releases/download/v${PV}/${P}.tar.gz"
+
+LICENSE="FLEX"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~ppc-aix ~x64-cygwin ~amd64-fbsd ~sparc-fbsd ~x86-fbsd ~amd64-linux ~arm-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~m68k-mint ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+IUSE="nls static test"
+
+# We want bison explicitly and not yacc in general #381273
+RDEPEND="sys-devel/m4"
+DEPEND="${RDEPEND}
+	app-arch/xz-utils
+	nls? ( sys-devel/gettext )
+	test? ( sys-devel/bison )"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-2.6.4-libobjdir.patch
+	"${FILESDIR}"/${PN}-2.6.4-fix-build-with-glibc2.6+.patch
+)
+
+src_prepare() {
+	default
+
+	# Disable running in the tests/ subdir as it has a bunch of built sources
+	# that cannot be made conditional (automake limitation). #568842
+	if ! use test ; then
+		sed -i \
+			-e '/^SUBDIRS =/,/^$/{/tests/d}' \
+			Makefile.in || die
+	fi
+	elibtoolize # Prefix always needs this
+}
+
+src_configure() {
+	use static && append-ldflags -static
+
+	multilib-minimal_src_configure
+}
+
+multilib_src_configure() {
+	# Do not install shared libs #503522
+	ECONF_SOURCE=${S} \
+	econf \
+		--disable-shared \
+		$(use_enable nls) \
+		--docdir='$(datarootdir)/doc/'${PF}
+}
+
+multilib_src_compile() {
+	if multilib_is_native_abi; then
+		default
+	else
+		cd src || die
+		emake -f Makefile -f - lib <<< 'lib: $(lib_LTLIBRARIES)'
+	fi
+}
+
+multilib_src_test() {
+	multilib_is_native_abi && emake check
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+		default
+	else
+		cd src || die
+		emake DESTDIR="${D}" install-libLTLIBRARIES install-includeHEADERS
+	fi
+}
+
+multilib_src_install_all() {
+	einstalldocs
+	dodoc ONEWS
+	prune_libtool_files --all
+	rm "${ED}"/usr/share/doc/${PF}/COPYING || die
+	dosym flex /usr/bin/lex
+}