[mythtv-commits] Ticket #11012: mythtv-0.25.2_p20120716 - configure sets incorrect CFLAGS

[MythTV]

#11012: mythtv-0.25.2_p20120716 - configure sets incorrect CFLAGS
--------------------------------+--------------------------------------
 Reporter:  klamp <klampiar@…>  |           Type:  Bug Report - General
   Status:  new                 |       Priority:  minor
Milestone:  unknown             |      Component:  MythTV - General
  Version:  Unspecified         |       Severity:  medium
 Keywords:  CFLAGS              |  Ticket locked:  0
--------------------------------+--------------------------------------
 This is basically copy of bug reported at
 https://bugs.gentoo.org/show_bug.cgi?id=431618.
 ---------------------------------------------------------------------
 configure apparently constructs incorrect CFLAGS to pass to gcc.

 for given system CFLAGS (from emerge --info):
 CFLAGS="-march=native -O2 -pipe -ggdb"
 CXXFLAGS="-march=native -O2 -pipe -ggdb"

 configure is called with (config.log):
 ./configure --cc=i686-pc-linux-gnu-gcc --cxx=i686-pc-linux-gnu-g++
 --ar=i686-pc-linux-gnu-ar --extra-cflags=-march=native -O2 -pipe -ggdb
 --extra-cxxflags=-march=native -O2 -pipe -ggdb --extra-ldflags=-Wl,-O1 -Wl
 ,--as-needed --prefix=/usr --libdir=/usr/lib --libdir-name=lib
 --mandir=/usr/share/man --enable-audio-alsa --disable-audio-jack
 --disable-audio-pulseoutput --disable-altivec --disable-dvb --disable-
 firewire --disable-lirc --enable-libxvid --dvb-path=/usr/include --enable-
 xrandr --enable-xv --enable-x11 --enable-nonfree --disable-libcec
 --disable-libdns-sd --enable-libtheora --enable-libvorbis --enable-
 libmp3lame --enable-libx264 --enable-libvpx --enable-libfaac --with-
 bindings=perl,python --python=python2.7 --compile-type=release --enable-
 debug --disable-stripping --enable-vdpau --enable-vaapi --disable-
 joystick-menu --enable-symbol-visibility --enable-pic --cpu=host
 --disable-distcc --disable-ccache

 and produces (config.mak):
 CFLAGS=-march=native -O2 -pipe -ggdb -march=native -O2 -pipe -ggdb
 -march=pentium4 -std=c99 -fomit-frame-pointer -fPIC -pthread -g -Wall
 -Wno-parentheses -Wno-switch -Wdisabled-optimization -Wpointer-arith
 -Wredundant-decls -Wno-pointer-sign -Wcast-qual -Wwrite-strings -Wtype-
 limits -Wundef -Wmissing-prototypes -O3 -fno-math-errno -fno-signed-zeros
 -fno-tree-vectorize

 which results in gcc call:
 i686-pc-linux-gnu-gcc -c -pipe -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112
 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DPIC -march=native -O2 -pipe
 -ggdb -march=native -O2 -pipe -ggdb -march=pentium4 -std=c99 -fomit-frame-
 pointer -fPIC -pthread -g -Wall -Wno-parentheses -Wno-switch -Wdisabled-
 optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-
 qual -Wwrite-strings -Wtype-limits -Wundef -Wmissing-prototypes -O3 -fno-
 math-errno -fno-signed-zeros -fno-tree-vectorize -DMMX -Di386
 -D_GNU_SOURCE -I/usr/share/qt4/mkspecs/linux-g++ -I. -I/usr/include -I/usr
 -I/usr/include/libxml2 -o dummy.o dummy.c

 While I expect system CFLAGS, or CFLAGS as close to system as possible, to
 be used.
 ---------------------------------------------------------------------
 Doug Goldstein:
 Take it up with upstream. I don't like how they mess with CFLAGS. For the
 longest time they insisted we block all user CFLAGS and use what they
 generate.
 ---------------------------------------------------------------------
 I have to second Doug Goldstein here, I dont like how you mess with CFLAGS
 either. Can you please just follow behavior of majority of software and
 honor user set CFLAGS?

-- 
Ticket URL: <http://code.mythtv.org/trac/ticket/11012>
MythTV <http://code.mythtv.org/trac>
MythTV Media Center