[sr #110269] AC_PROG_LEX failing

[anonymous]

URL:
  <https://savannah.gnu.org/support/?110269>

                 Summary: AC_PROG_LEX failing
                 Project: Autoconf
            Submitted by: None
            Submitted on: Wed 15 Jul 2020 04:04:43 PM UTC
                Category: None
                Priority: 5 - Normal
                Severity: 3 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: ross@burtonini.com
             Open/Closed: Open
         Discussion Lock: Any
        Operating System: None

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Details:

Both Flex and gdbm use AC_PROG_LEX and fail the same way with autoconf
2.70beta but worked with 2.69.

| checking for flex... flex
| checking for lex output file root... lex.yy
| checking for lex library... not found
| configure: error: required lex library not found

The config.log shows it trying a few options:

configure:12442: checking for lex library
configure:12457: aarch64-poky-linux-gcc  -fstack-protector-strong 
-D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security
--sysroot=/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0/recipe-sysroot
-o conftest  -O2 -pipe -g -feliminate-unused-debug-types
-fmacro-prefix-map=/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0=/usr/src/debug/flex/2.6.4-r0
                    
-fdebug-prefix-map=/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0=/usr/src/debug/flex/2.6.4-r0
                    
-fdebug-prefix-map=/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0/recipe-sysroot=
                    
-fdebug-prefix-map=/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0/recipe-sysroot-native=
  -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -Wl,-z,relro,-z,now conftest.c 
 >&5
/usr/src/debug/flex/2.6.4-r0/build/conftest.l:17: undefined reference to
`yywrap'


configure:12457: aarch64-poky-linux-gcc  -fstack-protector-strong 
-D_FORTIFY_SOURCE=2 -Wformat -Wformat-security
-Werror=format-security
--sysroot=/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0/recipe-sysroot
-
o conftest  -O2 -pipe -g -feliminate-unused-debug-types
-fmacro-prefix-map=/home/ross/Yocto/build/tmp/work/armv8a-
poky-linux/flex/2.6.4-r0=/usr/src/debug/flex/2.6.4-r0                     
-fdebug-prefix-map=/home/ross/Yocto/bui
ld/tmp/work/armv8a-poky-linux/flex/2.6.4-r0=/usr/src/debug/flex/2.6.4-r0      
               -fdebug-prefix-map=/
home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0/recipe-sysroot=
                     -fdebug-prefix
-map=/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0/recipe-sysroot-native=
  -Wl,-O1 -Wl,--hash-s
tyle=gnu -Wl,--as-needed -Wl,-z,relro,-z,now conftest.c -lfl  >&5
/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0/recipe-sysroot-native/usr/bin/aarch64-poky-linux/.
./../libexec/aarch64-poky-linux/gcc/aarch64-poky-linux/10.1.0/ld: cannot find
-lfl


configure:12457: aarch64-poky-linux-gcc  -fstack-protector-strong 
-D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security
--sysroot=/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0/recipe-sysroot
-o conftest  -O2 -pipe -g -feliminate-unused-debug-types
-fmacro-prefix-map=/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0=/usr/src/debug/flex/2.6.4-r0
                    
-fdebug-prefix-map=/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0=/usr/src/debug/flex/2.6.4-r0
                    
-fdebug-prefix-map=/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0/recipe-sysroot=
                    
-fdebug-prefix-map=/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0/recipe-sysroot-native=
  -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -Wl,-z,relro,-z,now conftest.c
-ll  >&5
/home/ross/Yocto/build/tmp/work/armv8a-poky-linux/flex/2.6.4-r0/recipe-sysroot-native/usr/bin/aarch64-poky-linux/../../libexec/aarch64-poky-linux/gcc/aarch64-poky-linux/10.1.0/ld:
cannot find -ll




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