[GRASSLIST:3737] compiling grass-5.7.0 - unable to locate lex

[Sabine Grabner]

hello 
 
i would like to compile the new version of grass-5.7.0 but the first problem 
rises with ./configure. 
 
ueberflieger:/usr/local/grass-5.7.0 # CFLAGS="-g -Wall" ./configure 
checking host system type... i686-pc-linux-gnu 
checking for gcc... gcc 
checking whether the C compiler (gcc -g -Wall ) works... yes 
checking whether the C compiler (gcc -g -Wall ) is a cross-compiler... no 
checking whether we are using GNU C... yes 
checking whether gcc accepts -g... yes 
checking for full floating-point support... yes 
checking for pwd... /bin/pwd 
checking for source directory... /usr/local/grass-5.7.0 
checking for build directory... /usr/local/grass-5.7.0 
checking how to build libraries... shared 
yes 
checking for ranlib... ranlib 
checking how to run the C preprocessor... gcc -E 
checking if 64bit support is requested... no 
checking if 64bit Sparc VIS support is requested... no 
checking system version (for dynamic loading)... Linux-2.4.21-166-default 
checking for dlopen in -ldl... yes 
checking for ar... ar 
checking if 64bit support is requested... no 
checking if 64bit Sparc VIS support is requested... no 
checking system version (for dynamic loading)... Linux-2.4.21-166-default 
checking for dlopen in -ldl... yes 
checking for ar... ar 
checking for SysV... no 
checking for another button... no 
checking for XDriver... socket 
checking for additional include dirs...  
checking for additional library dirs...  
checking for a BSD compatible install... /usr/bin/install -c 
checking for flex... lex 
checking for yywrap in -ll... no 
checking for lex... no 
configure: error: *** Unable to locate lex. 
ueberflieger:/usr/local/grass-5.7.0 #  
 
how to continue?  
 
thanx, sabine