Overview
Request 287843 revoked
- Pass -P in CPPFLAGS to configure to make AC_EGREP_CPP happy
with GCC 5.
- Created by rguenther
- In state revoked
-
Package maintainer:
WernerFink
Request History
rguenther created request
- Pass -P in CPPFLAGS to configure to make AC_EGREP_CPP happy
with GCC 5.
WernerFink added rguenther as a reviewer
Richard?
rguenther accepted review
Well, as explained in the description AC_EGREP_CPP with GCC 5 results in extra #line directives which in the emacs case confuses the libjpeg
version detection:
[ 1328s] checking for jerror.h... yes
[ 1328s] checking for jpeg_destroy_compress in -ljpeg... yes
[ 1328s] configure: WARNING: libjpeg found, but not version 6b or later
which uses AC_EGREP_CPP with a pattern that does not expect those
#line directives to appear. So the real fix would be to AC_EGREP_CPP but I didn't figure out where it originates from
(and it needs all packages using that to re-generate from fixed
sources).
The fix for AC_EGREP_CPP is simple - simply preprocess with -P
which tells GCC to _not_ emit any #line directives at all.
Or for emacs not to use AC_EGREP_CPP but sth more sensible, like
a AC_COMPILE test with sth that errors if the version doesn't match
its expectations.
rguenther approved review
Well, as explained in the description AC_EGREP_CPP with GCC 5 results in extra #line directives which in the emacs case confuses the libjpeg
version detection:
[ 1328s] checking for jerror.h... yes
[ 1328s] checking for jpeg_destroy_compress in -ljpeg... yes
[ 1328s] configure: WARNING: libjpeg found, but not version 6b or later
which uses AC_EGREP_CPP with a pattern that does not expect those
#line directives to appear. So the real fix would be to AC_EGREP_CPP but I didn't figure out where it originates from
(and it needs all packages using that to re-generate from fixed
sources).
The fix for AC_EGREP_CPP is simple - simply preprocess with -P
which tells GCC to _not_ emit any #line directives at all.
Or for emacs not to use AC_EGREP_CPP but sth more sensible, like
a AC_COMPILE test with sth that errors if the version doesn't match
its expectations.
rguenther revoked request
fixed by andreas
