[asterisk-bugs] [DAHDI-tools 0014638]: dahdi-tools fails to build if LDFLAGS contains "-Wl, --as-needed"

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
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http://bugs.digium.com/view.php?id=14638 
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Reported By:                Chainsaw
Assigned To:                
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Project:                    DAHDI-tools
Issue ID:                   14638
Category:                   General
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2009-03-10 12:02 CDT
Last Modified:              2009-03-10 12:02 CDT
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Summary:                    dahdi-tools fails to build if LDFLAGS contains
"-Wl,--as-needed"
Description: 
-lm ends up being discarded if --as-needed is in use:
x86_64-pc-linux-gnu-gcc -Wl,--as-needed -lm -o fxotune fxotune.o
version.o
fxotune.o: In function `power_of':
/var/tmp/portage/net-misc/dahdi-tools-2.1.0.2/work/dahdi-tools-2.1.0.2/fxotune.c:285:
undefined reference to `sqrtf'
fxotune.o: In function `one_point_dft':
/var/tmp/portage/net-misc/dahdi-tools-2.1.0.2/work/dahdi-tools-2.1.0.2/fxotune.c:318:
undefined reference to `sincos'
fxotune.o: In function `gentone':
/var/tmp/portage/net-misc/dahdi-tools-2.1.0.2/work/dahdi-tools-2.1.0.2/fxotune.c:206:
undefined reference to `sin'
fxotune.o: In function `genwaveform':
/var/tmp/portage/net-misc/dahdi-tools-2.1.0.2/work/dahdi-tools-2.1.0.2/fxotune.c:228:
undefined reference to `sin'
fxotune.o: In function `gentone':
/var/tmp/portage/net-misc/dahdi-tools-2.1.0.2/work/dahdi-tools-2.1.0.2/fxotune.c:206:
undefined reference to `sin'
/var/tmp/portage/net-misc/dahdi-tools-2.1.0.2/work/dahdi-tools-2.1.0.2/fxotune.c:206:
undefined reference to `sin'
fxotune.o: In function `genwaveform':
/var/tmp/portage/net-misc/dahdi-tools-2.1.0.2/work/dahdi-tools-2.1.0.2/fxotune.c:228:
undefined reference to `sin'
fxotune.o: In function `db_loss':
/var/tmp/portage/net-misc/dahdi-tools-2.1.0.2/work/dahdi-tools-2.1.0.2/fxotune.c:309:
undefined reference to `logf'
collect2: ld returned 1 exit status
make[1]: *** [fxotune] Error 1
make[1]: *** Waiting for unfinished jobs....

This is caused by the Makefile using LDFLAGS to pass libraries, resulting
in an incorrect ordering. As a result -lm is discarded. I have a patch for
this which I will attach shortly.
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Issue History 
Date Modified    Username       Field                    Change               
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2009-03-10 12:02 Chainsaw       New Issue                                    
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