[asterisk-bugs] [Asterisk 0017045]: Configure script inconsistent in using CFLAGS when detecting header files

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=17045 
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Reported By:                pprindeville
Assigned To:                
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Project:                    Asterisk
Issue ID:                   17045
Category:                   Core/BuildSystem
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     acknowledged
Asterisk Version:           1.6.2.6 
JIRA:                       SWP-1108 
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2010-03-16 20:15 CDT
Last Modified:              2010-06-03 21:52 CDT
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Summary:                    Configure script inconsistent in using CFLAGS when
detecting header files
Description: 
Building with cross-compiler tools, we get:

configure:34069: checking libpri.h usability
configure:34086:
/home/digium/trunk/build_i586/staging_dir/bin/i586-linux-uclibc-gcc -c -Os
-pipe -fomit-frame-pointer -march=k6-2 -fno-align-functions
-fno-align-loops -fno-align-jumps -fno-align-labels  -isysroot
/home/digium/trunk/build_i586/staging_dir -isystem
/home/digium/trunk/build_i586/staging_dir/usr/include -D_GNU_SOURCE   
conftest.c>&5
configure:34093: $? = 0
configure:34107: result: yes
configure:34111: checking libpri.h presence
configure:34126:
/home/digium/trunk/build_i586/staging_dir/bin/i586-linux-uclibc-cpp   
conftest.c
conftest.c:206:20: error: libpri.h: No such file or directory
configure:34133: $? = 1 

note that on line 34086 $(CC) is invoked with $(CFLAGS) and works
properly.

On line 34126, however, $(CPP) is invoked without $(CFLAGS) and fails.

Should CPPFLAGS be forced to CFLAGS if it's not explicitly set?
 
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 (0122943) tilghman (administrator) - 2010-06-03 21:52
 https://issues.asterisk.org/view.php?id=17045#c122943 
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Some examples of flags that are illegal for the preprocessor, but
acceptable to the compiler:  -O, -Wformat. 

Issue History 
Date Modified    Username       Field                    Change               
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2010-06-03 21:52 tilghman       Note Added: 0122943                          
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