hi i'm trying to configure a library source code statically from this command :

./configure --disable-shared CXXFLAGS="-O2 -march=i686"

but this error happends :

checking whether we are using the GNU C compiler... (cached) yes
checking whether gcc accepts -g... (cached) yes
checking for gcc option to accept ISO C89... (cached) none needed
checking dependency style of gcc... (cached) gcc3
checking how to run the C preprocessor... gcc -E
checking whether ln -s works... yes
checking whether make sets $(MAKE)... (cached) yes
checking for cos in -lm... no
configure: error: *** -lm not found! ***

anyone can help me ?

> configure: error: *** -lm not found! ***

Install it. (OS-dependent, in linux something like libc6-dev, glibc-dev etc)

1 members found this post helpful.

lm = libm.so or libm.a

May be the static libm.a is required ?

Install glibc-static ( Fedora, CentOS )

And be aware that libm.a has a "hideaway location"
in the latest Debian and Ubuntu : /usr/lib/i386-linux-gnu/libm.a
Or : /usr/lib/x86_64-linux-gnu/libm.a
( Provided by the package libc6-dev ).

.

i installed that packages
i still have the same paroblem it seems that i have to enter dir of libm manually with configure script but how ?

~ > whereis libm :
> libm: /usr/lib64/libm.a /usr/lib64/libm.so

It might be not enough: if configure wants to compile in 32-bit mode, /usr/lib64/libm.* won't help.

it dosent matter , i trying to compile it in 64bit mode but it gives me the same error :

./configure --disable-shared CXXFLAGS="-O2 -march=X86_64" --with-libm="/usr/lib64/libm.a"

is anything wrong with --with-libm="/usr/lib64/libm.a" ?

does it work without --disable-shared?

Usually when you fix one thing in configure something else will be broken in a long endless merry-go-round.

Read the release notes, check you have the correct dependencies etc for what you are compiling.
most likely is you are missing something.

You can often save a lot of time by taking a breath and doing some reading.