Yes, you're right, the problem does not occur if I only run the "configure" script without any parameters.

But when I add the parameter "--enable-case-insensitive-file-system", it does not build.
Here is the error message:

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gcc -DLOCALEDIR=\"/usr/local/share/locale\" -DLIBDIR=\"/usr/local/lib\" -DINCLUDEDIR=\"/usr/local/include\" -DHAVE_CONFIG_H -I.     -Wall -Wextra -Wdeclaration-after-statement -Wshadow -Wpointer-arith -Wbad-function-cast -g -O2 -MT hash.o -MD -MP -MF .deps/hash.Tpo -c -o hash.o hash.c
mv -f .deps/hash.Tpo .deps/hash.Po
gcc -Wall -Wextra -Wdeclaration-after-statement -Wshadow -Wpointer-arith -Wbad-function-cast -g -O2   -o make ar.o arscan.o commands.o default.o dir.o expand.o file.o function.o getopt.o getopt1.o implicit.o job.o main.o misc.o read.o remake.o remote-stub.o rule.o signame.o strcache.o variable.o version.o vpath.o hash.o   -lrt
dir.o: In function `dir_contents_file_exists_p':
/home/colin/Desktop/Downloads/make-cvs/make/dir.c:712: undefined reference to `strcmpi'
dir.o: In function `dirfile_hash_cmp':
/home/colin/Desktop/Downloads/make-cvs/make/dir.c:404: undefined reference to `strcmpi'
dir.o: In function `directory_hash_cmp':
/home/colin/Desktop/Downloads/make-cvs/make/dir.c:361: undefined reference to `strcmpi'
file.o: In function `file_hash_cmp':
/home/colin/Desktop/Downloads/make-cvs/make/file.c:58: undefined reference to `strcmpi'
strcache.o: In function `str_hash_cmp':
/home/colin/Desktop/Downloads/make-cvs/make/strcache.c:118: undefined reference to `strcmpi'
------------------------------------------------

If I try to compile the latest CVS revision of "make", the compiler complains about a missing strcmpi function.
Now I added a macro, which replaces all strcmpi's with strcasecmp. Then "make" compiles correctly.

I attached a patch file, which contains the macro I use.

My Operating System is Ubuntu 7.04.