Installing flex (lexical analyzer) on Mac

M

5

11

Can someone tell me how I can install flex (lexical analyzer) on my Mac? I searched everywhere on google and I can't find it. I have the universal binary and I extracted it to my desktop but I have no idea where to go from here. Any help would be greatly appreciated!

Melancholia answered 7/3, 2011 at 1:46 Comment(1)

Where did you get the binary from? I can't find one on their site. – Quinquennium 7/3, 2011 at 1:50

F

5

You can use macports to install flex

Fallfish answered 7/3, 2011 at 1:52 Comment(0)

U

18

Try using Homebrew (Packet manager for Mac) and use the following command :-

brew install flex

Uriah answered 20/5, 2016 at 15:5 Comment(0)

F

5

You can use macports to install flex

Fallfish answered 7/3, 2011 at 1:52 Comment(0)

Q

4

You can always install from source. Download the tarball from the flex site, extract it, cd to the directory where you extracted it, and run the following:

./configure
make
make install
make clean

Assuming you have make and a C compiler on your Mac, which I believe all Macs have.

Quinquennium answered 7/3, 2011 at 1:53 Comment(3)

Hey, i just did that there was bunch of text in terminal and i didn't see any errors. After that, I typed flex and path to the .lex file and nothing happened. Can you please tell me how I can use it? I searched on google and did exactly what i found. Thanks – Melancholia 7/3, 2011 at 4:44

@RafeKettler I've been trying to do exactly the same steps, but the make command keep erring out saying Undefined symbols for architecture x86_64: "_yylex". Any idea what to try to fix this? – Whitesmith 31/3, 2015 at 21:56

@Wongzigii I fixed that somehow. I'll try to remember how today, but no promises. I think, if I recall correctly I either didn't have one of my files #include'd correctly, or I was using an extern without defining it in the right place. But I get back to you if I remember the exact fix. – Whitesmith 29/5, 2015 at 14:4

L

4

Flex is shipped with the xCode Command line tools; you only got to install them via xcode > preferences > downloads > Command line tools. This also includes gcc (Clang).

Latinize answered 29/3, 2015 at 20:6 Comment(0)

A

0

This info can help to somebody to save time:

Just today I have try to install FLEX 2.5.39 from sources. Make - fails.

After some thoughts I have decide to try older archives. 2.5.38 - fail 2.5.37 - OK

It seems on now() = 2015-03-15, macport also uses 2.5.37 build.

Abraxas answered 16/3, 2015 at 9:41 Comment(0)

Recommended topics

Hot tags