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Reviewers: austin, hvr
Subscribers: rwbarton, thomie, erikd
Differential Revision: https://phabricator.haskell.org/D3886
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This patch does three things:
1.) It simplifies the flag parsing code in `conf.py` to properly display
flag definitions created by `.. (ghc|rts)-flag::`. Additionally, all flag
references must include the associated arguments. Documentation has been
added to `editing-guide.rst` to explain this.
2.) It normalizes all flag definitions to a similar format. Notably, all
instances of `<>` have been replaced with `⟨⟩`. All references across the
users guide have been updated to match.
3.) It fixes a couple issues with the flag reference table's generation code,
which did not handle comma separated flags in the same cell and did not
properly reference flags with arguments.
Test Plan:
`SPHINXOPTS = -n` to activate "nitpicky" mode, which reports all broken
references. All remaining errors are references to flags without any
documentation.
Reviewers: austin, bgamari
Reviewed By: bgamari
Subscribers: rwbarton, thomie
GHC Trac Issues: #13980
Differential Revision: https://phabricator.haskell.org/D3778
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the `-staticlib` flag is currently only supported on apple platforms,
due to the avaiablity of libtool (the apple version, which is unlike the
gnu version). This however prevents the use of -staticlib in cases
where it would be beneficial as well. The functionality that
`-staticlib` uses from `libtool` can be stubbed with a small script like
the following:
```
#!/bin/bash
# This script pretends to be libtool. And supports
# only a limited set of flags.
#
# It is supposed to be a stand in for libtool -static, whic
# creates a static archive. This is done by locating all -l<lib>
# libs in the provied -L<lib path> library paths, and building an
# MRI script to create the final archive from all the libraries, and
# other provided inputs.
#
name=${0##*/}
target=${name%-*}
set -e
ldflags_L=()
ldflags_l=()
output=""
inputs=()
STATIC=0
DYNAMIC=1
mode=$DYNAMIC
verbose=0
# find_lib <name> path path path path
function find_lib () {
lib=$1; shift 1;
for dir in $@; do
if [ -f "$dir/$lib" ]; then
echo "$dir/$lib"
break
fi
done
}
while [ "$#" -gt 0 ]; do
case "$1" in
-v|--verbose) verbose=1; shift 1;;
-o) output="$2"; shift 2;;
-L*) ldflags_L+=("${1:2:${#1}-2}"); shift 1;;
-l*) ldflags_l+=("lib${1:2:${#1}-2}.a"); shift 1;;
-static) mode=$STATIC; shift 1;;
-dynamic) mode=$DYNAMIC; shift 1;;
-Wl,*) ldflags+=("${1#*,}"); shift 1;;
-*) echo "unknown option: $1" >&2; exit 1;;
*) inputs+=("$1"); shift 1;;
esac
done
if [ ! $mode == $STATIC ]; then
echo "-dynamic not supported!" >&2; exit 1;
fi
MRI="create ${output}\n"
for input in "${ldflags_l[@]}"; do
lib=$(find_lib $input ${ldflags_L[@]})
if [ -z $lib ]; then
echo "Failed to find lib $input" >&2
exit 1
else
MRI+="addlib $lib\n"
continue
fi
done
for input in "${inputs[@]}"; do
MRI+="addmod $input\n"
done
MRI+="save\nend\n"
echo -e "$MRI" | $target-ar -M
$target-ranlib $output
```
if `ar` supports MRI scripts.
Reviewers: austin, bgamari
Reviewed By: bgamari
Subscribers: rwbarton, thomie
Differential Revision: https://phabricator.haskell.org/D3706
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This adds a flag -split-sections that does similar things to
-split-objs, but using sections in single object files instead of
relying on the Satanic Splitter and other abominations. This is very
similar to the GCC flags -ffunction-sections and -fdata-sections.
The --gc-sections linker flag, which allows unused sections to actually
be removed, is added to all link commands (if the linker supports it) so
that space savings from having base compiled with sections can be
realized.
Supported both in LLVM and the native code-gen, in theory for all
architectures, but really tested on x86 only.
In the GHC build, a new SplitSections variable enables -split-sections
for relevant parts of the build.
Test Plan: validate with both settings of SplitSections
Reviewers: dterei, Phyx, austin, simonmar, thomie, bgamari
Reviewed By: simonmar, thomie, bgamari
Subscribers: hsyl20, erikd, kgardas, thomie
Differential Revision: https://phabricator.haskell.org/D1242
GHC Trac Issues: #8405
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