diff options
Diffstat (limited to 'gcc/genmultilib')
| -rw-r--r-- | gcc/genmultilib | 57 |
1 files changed, 42 insertions, 15 deletions
diff --git a/gcc/genmultilib b/gcc/genmultilib index b6dfdf39c4f..6610b7bd032 100644 --- a/gcc/genmultilib +++ b/gcc/genmultilib @@ -53,6 +53,16 @@ # The optional fifth argument is a list of options that should be # used whenever building multilib libraries. +# The optional sixth argument is a list of exclusions used internally by +# the compiler similar to exceptions. The difference being that exclusions +# allow matching default options that genmultilib does not know about and +# is done at runtime as opposed to being sorted out at compile time. +# Each element in the list is a seperate exclusion rule. Each rule is +# a list of options (sans preceding '-') seperated by a '/'. The options +# on the rule are grouped as an AND operation, and all options much match +# for the rule to exclude a set. Options can be preceded with a '!' to +# match a logical NOT. + # The output looks like # #define MULTILIB_MATCHES "\ # SUBDIRECTORY OPTIONS;\ @@ -66,23 +76,28 @@ # The order of the subdirectories is such that they can be created in # order; that is, a subdirectory is preceded by all its parents. -# Here is a example (this is simplified from the actual 680x0 case): -# genmultilib "m68000/m68020 msoft-float" "m68000 m68020 msoft-float" -# "m68000=mc68000" +# Here is an example (this is from the actual sparc64 case): +# genmultilib 'm64/m32 mno-app-regs|mcmodel=medany' '64 32 alt' +# 'mcmodel?medany=mcmodel?medmid' 'm32/mno-app-regs* m32/mcmodel=*' +# 'm32/!m64/mno-app-regs m32/!m64/mcmodel=medany' # This produces: -# ". !m68000 !mc68000 !m68020 !msoft-float;", -# "m68000 m68000 !m68020 !msoft-float;", -# "m68000 mc60000 !m68020 !msoft-float;", -# "m68020 !m68000 !mc68000 m68020 !msoft-float;", -# "msoft-float !m68000 !mc68000 !m68020 msoft-float;", -# "m68000/msoft-float m68000 !m68020 msoft-float;", -# "m68000/msoft-float mc68000 !m68020 msoft-float;", -# "m68020/msoft-float !m68000 !mc68000 m68020 msoft-float;", +# ". !m64 !m32 !mno-app-regs !mcmodel=medany;", +# "64 m64 !m32 !mno-app-regs !mcmodel=medany;", +# "32 !m64 m32 !mno-app-regs !mcmodel=medany;", +# "alt !m64 !m32 mno-app-regs mcmodel=medany;", +# "alt !m64 !m32 mno-app-regs !mcmodel=medany;", +# "alt !m64 !m32 !mno-app-regs mcmodel=medany;", +# "64/alt m64 !m32 mno-app-regs mcmodel=medany;", +# "64/alt m64 !m32 mno-app-regs !mcmodel=medany;", +# "64/alt m64 !m32 !mno-app-regs mcmodel=medany;", # -# The effect is that `gcc -msoft-float' (for example) will append -# msoft-float to the directory name when searching for libraries or -# startup files, and `gcc -m68000 -msoft-float' (for example) will -# append m68000/msoft-float. +# The effect is that `gcc -mno-app-regs' (for example) will append "alt" +# to the directory name when searching for libraries or startup files and +# `gcc -m32 -mcmodel=medany' (for example) will append "32/alt". Also note +# that exclusion above is moot, unless the compiler had a default of -m32, +# which would mean that all of the "alt" directories (not the 64/alt ones) +# would be ignored (not generated, nor used) since the exclusion also +# matches the multilib_default args. # Copy the positional parameters into variables. options=$1 @@ -90,6 +105,7 @@ dirnames=$2 matches=$3 exceptions=$4 extra=$5 +exclusions=$6 echo "static char *multilib_raw[] = {" @@ -286,6 +302,17 @@ echo "};" # Output the default options now echo "" echo "static char *multilib_extra = \"${extra}\";" + +# Output the exclusion rules now +echo "" +echo "static char *multilib_exclusions_raw[] = {" +for rule in ${exclusions}; do + s=`echo ${rule} | sed -e 's,/, ,g'` + echo "\"${s};\"," +done +echo "NULL" +echo "};" + rm -f tmpmultilib2 exit 0 |