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configure: add --enable-pic flag

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Using this flag enables position-independent code even when not strictly
required.  It is impossible to use --disable-pic to forcibly disable PIC
when other properties mandate it.

Originally committed as revision 19672 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2009-08-20 01:06:18 +00:00
parent 90d43b52e1
commit 8a3c86277b
1 changed files with 12 additions and 9 deletions
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21
configure vendored
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@ -221,6 +221,7 @@ show_help(){
echo " --disable-neon disable neon optimizations"
echo " --disable-vis disable VIS optimizations"
echo " --disable-yasm disable use of yasm assembler"
echo " --enable-pic build position-independent code"
echo
echo "Developer options (useful when working on FFmpeg itself):"
echo " --disable-debug disable debugging symbols"
@ -840,6 +841,7 @@ CONFIG_LIST="
mpegaudio_hp
network
nonfree
pic
postproc
powerpc_perf
rdft
@ -1743,7 +1745,7 @@ case "$arch" in
arch="alpha"
enable fast_64bit
check_cflags -mieee
pic=$shared
spic=$shared
;;
arm|armv[4567]*l)
arch="arm"
@ -1756,29 +1758,29 @@ case "$arch" in
ia64)
arch="ia64"
enable fast_64bit
pic=$shared
spic=$shared
;;
m68k)
arch="m68k"
;;
mips|mipsel|IP*)
arch="mips"
pic=$shared
spic=$shared
;;
mips64)
arch="mips"
subarch="mips64"
enable fast_64bit
pic=$shared
spic=$shared
;;
parisc|hppa)
arch="parisc"
pic=$shared
spic=$shared
;;
parisc64|hppa64)
arch="parisc"
enable fast_64bit
pic=$shared
spic=$shared
;;
"Power Macintosh"|ppc|powerpc)
arch="ppc"
@ -1798,13 +1800,13 @@ case "$arch" in
;;
sparc)
arch="sparc"
pic=$shared
spic=$shared
;;
sun4u|sparc64)
arch="sparc"
subarch="sparc64"
enable fast_64bit
pic=$shared
spic=$shared
;;
i386|i486|i586|i686|i86pc|BePC)
arch="x86"
@ -1817,7 +1819,7 @@ case "$arch" in
enable cmov
enable fast_cmov
enable fast_unaligned
check_cc <<EOF && enable fast_64bit && subarch="x86_64" && pic=$shared
check_cc <<EOF && enable fast_64bit && subarch="x86_64" && spic=$shared
int test[sizeof(char*) - 7];
EOF
;;
@ -1827,6 +1829,7 @@ EOF
esac
enable $arch $subarch
enabled spic && enable pic
# OS specific
case $target_os in