MySQL Bugs: #25576: configure succeeds even if c++ is not fully installed, make then fails

Bug #25576	configure succeeds even if c++ is not fully installed, make then fails
Submitted:	12 Jan 2007 11:15	Modified:	16 Mar 2009 11:39
Reporter:	Philip Stoev	Email Updates:
Status:	Not a Bug	Impact on me:	None
Category:	MySQL Server: Compiling	Severity:	S3 (Non-critical)
Version:	5.0.34-BK, 5.0.33	OS:	Linux (Linux Fedora Core 4)
Assigned to:	Kent Boortz	CPU Architecture:	Any
Tags:	qc

Description:
Hello,

If the gcc-c++ RPM package is missing, the configure script will detect that in passing:

checking for c++... no
./configure: line 5165: g++: command not found
checking "C++ compiler version"... "g++ ./configure: line 5168: g++: command not found"

however the script will continue and upon running make, one will get:

../depcomp: line 512: exec: g++: not found

It is preferable for configure to fail in such cases in order to avoid incomplete builds.

If one installs gcc-c++ and runs make again, the following error occurs:

../include/my_global.h:911: error: redeclaration of C++ built-in type 'bool'

How to repeat:
1. Install a RPM-based distribution.

2. Uninstall the gcc-c++ package via rpm -e

3. run ./configure and it will succeed

4. run make and it will fail

5. Install gcc-c++

6. run make again and it will fail differently

Suggested fix:
http://www.kitchenlab.org/www/bmah/Software/pchar/pchar-1.5.tar.gz

This program handles this better in its ./configure script:

checking for c++... no
checking for g++... no
checking for gcc... gcc
checking whether the C++ compiler (gcc  ) works... no
configure: error: installation or configuration problem: C++ compiler cannot create executables.

Thank you for a problem report and a patch. Please, check with a newer version, 5.0.33, and inform about the results.

Sorry, not patch but general idea how to create it... Check with 5.0.33 anyway, please.

The situation is the same with 5.0.33

Verified just as described (one will need just to execute mv /usr/bin/g++ /usr/bin/gg++ to repeat - no need to remove entire RPM), also - with latest 5.0.34-BK on Linux.

run make and has error

../depcomp: line 512: exec: g++: not found

mysql version: mysql-5.0.51b

I was installing mysql mysql-5.0.51b on centOS 5.1

This is not a bug in the MySQL Server.

The AC_PROG_CXX macro of autoconf seems to be easily confused by setting the CXX environment variable to a name that doesn't refer to an existing binary.