fosslinux
GitHub
commit
e9c8313458
33
README.md
33
README.md
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@ -208,7 +208,12 @@ is required later for autotools.
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more complex edits, including just changes to lines. Luckily, we are able to
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patch patch using sed only.
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#### Part 13: patched tinycc
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#### Part 13: patched mes-libc
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Since patch is available at this point, we can apply additional fixes to
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mes-libc that are not included in the wip-m2 branch and recompile libc.
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#### Part 14: patched tinycc
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In Guix, tinycc is patched to force static linking. Prior to this step, we have
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been forced to manually specify static linking for each tool. Now that we have
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@ -217,11 +222,6 @@ patch, we can patch tinycc to force static linking and then recompile it.
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Note that we have to do this using tinycc 0.9.26, as tinycc 0.9.27 cannot
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recompile itself for unknown reasons.
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#### Part 14: patched mes-libc
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Since patch is available at this point, we can apply additional fixes to
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mes-libc that are not included in the wip-m2 branch and recompile libc.
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#### Part 15: make 3.80
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GNU `make` is now built so we have a more robust building system. `make` allows
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@ -266,6 +266,7 @@ cope here.
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macros to be defined and files to be generated from those macros.
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#### Part 22: flex 2.5.11
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`flex` is a tool for generating lexers or scanners: programs that recognize lexical patters.
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Unfortunately `flex` also depends on itself for compiling its own scanner, so
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@ -273,5 +274,23 @@ first flex 2.5.11 is compiled, with its scanner definition manually modified so
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it can be processed by lex for the Heirloom project (the required modifications
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are mostly syntactical, plus a few workarounds to avoid some flex advanced features).
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### Part 23 flex 2.5.14
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#### Part 23 flex 2.5.14
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Then we recompile unpatched `flex` using its own lexer.
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#### Part 24 musl 1.1.24
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`musl` is a C standard library that is lightweight, fast, simple, free, and strives to be correct
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in the sense of standards-conformance and safety. `musl` is used by some distributions of GNU/Linux
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as their C library. Our previous Mes C library was incomplete which prevented us from building many
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newer or more complex programs.
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`tcc` has slight problems when building and linking `musl`, so we apply a few patches. In particular,
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we replace all weak symbols with strong symbols and will patch `tcc` in the next step to ignore duplicate
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symbols.
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#### Part 25 tcc 0.9.27 (musl)
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We recompile `tcc` against musl. This is a two stage process. First we build tcc-0.9.27 that itself
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links to Mes C library but produces binaries linked to musl. Then we recompile newly produced tcc
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with itself. Interestingly, tcc-0.9.27 linked against musl is self hosting.
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@ -139,6 +139,9 @@ get_file http://download.nust.na/pub2/openpkg1/sources/DST/flex/flex-2.5.11.tar.
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# flex 2.5.14
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get_file http://download.nust.na/pub2/openpkg1/sources/DST/flex/flex-2.5.14.tar.gz
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# musl 1.1.24
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get_file https://musl.libc.org/releases/musl-1.1.24.tar.gz
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# General cleanup
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find tmp -name .git -exec rm -rf \;
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@ -101,16 +101,16 @@ cd ${pkg}
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kaem --file ${pkg}.kaem
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cd ..
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# Part 13: tcc-patched
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cd tcc-0.9.27
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kaem --file tcc-patched.kaem
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cd ..
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# Part 14: mes-libc-patched
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# Part 13: mes-libc-patched
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cd tcc-0.9.27
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kaem --file mes-libc-patched.kaem
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cd ..
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# Part 14: tcc-patched
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cd tcc-0.9.27
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kaem --file tcc-patched.kaem
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cd ..
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# Part 15: make
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pkg="make-3.80"
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cd ${pkg}
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@ -27,14 +27,15 @@ build () {
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cd "build"
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echo "${pkg}: unpacking source."
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call src_unpack
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build_script="${base_dir}/${script_name}"
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if test -e "${build_script}"; then
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# shellcheck source=/dev/null
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. "${build_script}"
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fi
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echo "${pkg}: unpacking source."
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call src_unpack
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cd "${pkg}" || (echo "Cannot cd into build/${pkg}!"; kill $$)
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echo "${pkg}: preparing source."
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@ -53,6 +54,8 @@ build () {
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echo "${pkg}: build successful"
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cd ..
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unset -f src_unpack src_prepare src_configure src_compile src_install
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}
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# Default unpacking function that unpacks a single source tarball.
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@ -0,0 +1,22 @@
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src_prepare() {
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default_src_prepare
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# tcc does not support complex types
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rm -rf src/complex
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# Configure fails without this
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mkdir -p /dev
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}
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src_configure() {
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CC=tcc ./configure \
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--host=i386 \
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--disable-shared \
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--prefix=/after \
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--libdir=/after/lib/musl/ \
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--includedir=/after/include/musl
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}
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src_compile() {
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make CROSS_COMPILE= AR="tcc -ar" RANLIB=true CFLAGS="-DSYSCALL_NO_TLS"
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}
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@ -0,0 +1,58 @@
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tcc does not seem to support stmxcsr and ldmxcsr.
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Remove those. This migt break float exception handling but we
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are unlikely to need it.
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diff -U3 -r src/fenv/i386/fenv.s src/fenv/i386/fenv.s
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--- src/fenv/i386/fenv.s 2019-10-13 22:58:27.000000000 +0100
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+++ src/fenv/i386/fenv.s 2021-02-01 00:27:04.924135707 +0000
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@@ -17,7 +17,6 @@
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jz 1f
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fnclex
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1: push %edx
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- stmxcsr (%esp)
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pop %edx
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and $0x3f,%eax
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or %eax,%edx
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@@ -26,7 +25,6 @@
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not %ecx
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and %ecx,%edx
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push %edx
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- ldmxcsr (%esp)
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pop %edx
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1: xor %eax,%eax
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ret
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@@ -77,11 +75,9 @@
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pop %edx
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testl $0x02000000,(%edx)
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jz 1f
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- stmxcsr (%esp)
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shl $3,%ch
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andb $0x9f,1(%esp)
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or %ch,1(%esp)
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- ldmxcsr (%esp)
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1: pop %ecx
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ret
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@@ -107,7 +103,6 @@
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testl $0x02000000,(%edx)
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jz 1f
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push %eax
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- stmxcsr (%esp)
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pop %edx
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and $0x3f,%edx
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or %edx,4(%ecx)
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@@ -143,7 +138,6 @@
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shl $3,%ecx
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or $0x1f80,%ecx
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mov %ecx,4(%esp)
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- ldmxcsr 4(%esp)
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1: ret
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.global fetestexcept
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@@ -158,7 +152,6 @@
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pop %edx
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testl $0x02000000,(%edx)
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jz 1f
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- stmxcsr 4(%esp)
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or 4(%esp),%eax
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1: and %ecx,%eax
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ret
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@ -0,0 +1,12 @@
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tcc -ar does not support creating empty archives
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--- Makefile 2019-10-13 22:58:27.000000000 +0100
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+++ Makefile 2021-02-01 00:21:14.974687663 +0000
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@@ -167,7 +167,7 @@
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$(EMPTY_LIBS):
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rm -f $@
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- $(AR) rc $@
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+ touch $@
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lib/%.o: obj/crt/$(ARCH)/%.o
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cp $< $@
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@ -0,0 +1,12 @@
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Replace weak symbols with strong to workaround an issue with tcc -ar
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This won't be necessary once we can rebuild with ar from binutils.
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--- src/include/features.h 2021-02-02 23:15:42.791932948 +0000
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+++ src/include/features.h 2021-02-02 23:17:21.394647015 +0000
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@@ -6,6 +6,6 @@
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#define weak __attribute__((__weak__))
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#define hidden __attribute__((__visibility__("hidden")))
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#define weak_alias(old, new) \
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- extern __typeof(old) new __attribute__((__weak__, __alias__(#old)))
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+ extern __typeof(old) new __attribute__((/*__weak__, */__alias__(#old)))
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#endif
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@ -0,0 +1,31 @@
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From 0b0640219338b80cf47026d1970b5503414ed7f3 Mon Sep 17 00:00:00 2001
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From: Rich Felker <dalias@aerifal.cx>
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Date: Sun, 30 Aug 2020 21:37:12 -0400
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Subject: fix i386 __set_thread_area fallback
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this code is only needed for pre-2.6 kernels, which are not actually
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supported anyway, and was never tested. the fallback path using
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SYS_modify_ldt failed to clear the upper bits of %eax (all ones due to
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SYS_set_thread_area's return value being an error) before modifying
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%al to attempt a new syscall.
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---
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src/thread/i386/__set_thread_area.s | 1 +
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1 file changed, 1 insertion(+)
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(limited to 'src/thread/i386/__set_thread_area.s')
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diff --git src/thread/i386/__set_thread_area.s src/thread/i386/__set_thread_area.s
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index c2c21dd5..aa6852be 100644
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--- src/thread/i386/__set_thread_area.s
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+++ src/thread/i386/__set_thread_area.s
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@@ -28,6 +28,7 @@ __set_thread_area:
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ret
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2:
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mov %ebx,%ecx
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+ xor %eax,%eax
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xor %ebx,%ebx
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xor %edx,%edx
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mov %ebx,(%esp)
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--
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cgit v1.2.1
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@ -0,0 +1,13 @@
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tcc does not like jecxz instruction.
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--- src/signal/i386/sigsetjmp.s 2019-10-13 22:58:27.000000000 +0100
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+++ src/signal/i386/sigsetjmp.s 2021-02-01 00:19:25.671735415 +0000
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@@ -5,7 +5,8 @@
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sigsetjmp:
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__sigsetjmp:
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mov 8(%esp),%ecx
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- jecxz 1f
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+ cmp %ecx,0
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+ je 1f
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mov 4(%esp),%eax
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popl 24(%eax)
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@ -0,0 +1,107 @@
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tinycc-0.9.27 does not support the use of the static keyword within an array length or index.
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diff -U3 -r src/internal/syscall.h src/internal/syscall.h
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--- src/internal/syscall.h 2019-10-13 22:58:27.000000000 +0100
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+++ src/internal/syscall.h 2021-02-01 00:24:02.099200492 +0000
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@@ -331,7 +331,7 @@
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#define __sys_open_cp(...) __SYSCALL_DISP(__sys_open_cp,,__VA_ARGS__)
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#define sys_open_cp(...) __syscall_ret(__sys_open_cp(__VA_ARGS__))
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-hidden void __procfdname(char __buf[static 15+3*sizeof(int)], unsigned);
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+hidden void __procfdname(char __buf[15+3*sizeof(int)], unsigned);
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hidden void *__vdsosym(const char *, const char *);
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diff -U3 -r src/network/lookup.h src/network/lookup.h
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--- src/network/lookup.h 2019-10-13 22:58:27.000000000 +0100
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+++ src/network/lookup.h 2021-02-01 00:27:42.695155110 +0000
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@@ -43,9 +43,9 @@
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#define MAXADDRS 48
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#define MAXSERVS 2
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-hidden int __lookup_serv(struct service buf[static MAXSERVS], const char *name, int proto, int socktype, int flags);
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-hidden int __lookup_name(struct address buf[static MAXADDRS], char canon[static 256], const char *name, int family, int flags);
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-hidden int __lookup_ipliteral(struct address buf[static 1], const char *name, int family);
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+hidden int __lookup_serv(struct service buf[MAXSERVS], const char *name, int proto, int socktype, int flags);
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+hidden int __lookup_name(struct address buf[MAXADDRS], char canon[256], const char *name, int family, int flags);
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+hidden int __lookup_ipliteral(struct address buf[1], const char *name, int family);
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hidden int __get_resolv_conf(struct resolvconf *, char *, size_t);
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hidden int __res_msend_rc(int, const unsigned char *const *, const int *, unsigned char *const *, int *, int, const struct resolvconf *);
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diff -U3 -r src/network/lookup_ipliteral.c src/network/lookup_ipliteral.c
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--- src/network/lookup_ipliteral.c 2019-10-13 22:58:27.000000000 +0100
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+++ src/network/lookup_ipliteral.c 2021-02-01 00:27:59.955620933 +0000
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@@ -9,7 +9,7 @@
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#include <ctype.h>
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#include "lookup.h"
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-int __lookup_ipliteral(struct address buf[static 1], const char *name, int family)
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+int __lookup_ipliteral(struct address buf[1], const char *name, int family)
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{
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struct in_addr a4;
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struct in6_addr a6;
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diff -U3 -r src/network/lookup_name.c src/network/lookup_name.c
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--- src/network/lookup_name.c 2019-10-13 22:58:27.000000000 +0100
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+++ src/network/lookup_name.c 2021-02-01 00:28:56.117136509 +0000
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@@ -23,7 +23,7 @@
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return !*s;
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}
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-static int name_from_null(struct address buf[static 2], const char *name, int family, int flags)
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+static int name_from_null(struct address buf[2], const char *name, int family, int flags)
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{
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int cnt = 0;
|
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if (name) return 0;
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@@ -41,12 +41,12 @@
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return cnt;
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}
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-static int name_from_numeric(struct address buf[static 1], const char *name, int family)
|
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+static int name_from_numeric(struct address buf[1], const char *name, int family)
|
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{
|
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return __lookup_ipliteral(buf, name, family);
|
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}
|
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|
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-static int name_from_hosts(struct address buf[static MAXADDRS], char canon[static 256], const char *name, int family)
|
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+static int name_from_hosts(struct address buf[MAXADDRS], char canon[256], const char *name, int family)
|
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{
|
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char line[512];
|
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size_t l = strlen(name);
|
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@@ -130,7 +130,7 @@
|
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return 0;
|
||||
}
|
||||
|
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-static int name_from_dns(struct address buf[static MAXADDRS], char canon[static 256], const char *name, int family, const struct resolvconf *conf)
|
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+static int name_from_dns(struct address buf[MAXADDRS], char canon[256], const char *name, int family, const struct resolvconf *conf)
|
||||
{
|
||||
unsigned char qbuf[2][280], abuf[2][512];
|
||||
const unsigned char *qp[2] = { qbuf[0], qbuf[1] };
|
||||
@@ -166,7 +166,7 @@
|
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return EAI_FAIL;
|
||||
}
|
||||
|
||||
-static int name_from_dns_search(struct address buf[static MAXADDRS], char canon[static 256], const char *name, int family)
|
||||
+static int name_from_dns_search(struct address buf[MAXADDRS], char canon[256], const char *name, int family)
|
||||
{
|
||||
char search[256];
|
||||
struct resolvconf conf;
|
||||
@@ -284,7 +284,7 @@
|
||||
return b->sortkey - a->sortkey;
|
||||
}
|
||||
|
||||
-int __lookup_name(struct address buf[static MAXADDRS], char canon[static 256], const char *name, int family, int flags)
|
||||
+int __lookup_name(struct address buf[MAXADDRS], char canon[256], const char *name, int family, int flags)
|
||||
{
|
||||
int cnt = 0, i, j;
|
||||
|
||||
diff -U3 -r src/network/lookup_serv.c src/network/lookup_serv.c
|
||||
--- src/network/lookup_serv.c 2019-10-13 22:58:27.000000000 +0100
|
||||
+++ src/network/lookup_serv.c 2021-02-01 00:29:10.357520778 +0000
|
||||
@@ -9,7 +9,7 @@
|
||||
#include "lookup.h"
|
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#include "stdio_impl.h"
|
||||
|
||||
-int __lookup_serv(struct service buf[static MAXSERVS], const char *name, int proto, int socktype, int flags)
|
||||
+int __lookup_serv(struct service buf[MAXSERVS], const char *name, int proto, int socktype, int flags)
|
||||
{
|
||||
char line[128];
|
||||
int cnt = 0;
|
||||
|
|
@ -0,0 +1,37 @@
|
|||
From 1642f5982009e110615a29745f9cafd51a5c1597 Mon Sep 17 00:00:00 2001
|
||||
From: Giovanni Mascellani <gio@debian.org>
|
||||
Date: Tue, 11 Jun 2019 11:20:07 +0200
|
||||
Subject: [PATCH] stdarg.h: add support for tcc.
|
||||
|
||||
---
|
||||
arch/i386/bits/alltypes.h.in | 14 +++++++++++++-
|
||||
1 file changed, 13 insertions(+), 1 deletion(-)
|
||||
|
||||
diff --git a/arch/i386/bits/alltypes.h.in b/arch/i386/bits/alltypes.h.in
|
||||
index 1a8432d3..44cb5987 100644
|
||||
--- arch/i386/bits/alltypes.h.in
|
||||
+++ arch/i386/bits/alltypes.h.in
|
||||
@@ -2,7 +2,19 @@
|
||||
#define _Int64 long long
|
||||
#define _Reg int
|
||||
|
||||
-#if __GNUC__ >= 3
|
||||
+#ifdef __TINYC__
|
||||
+typedef char *__builtin_va_list;
|
||||
+#define __builtin_va_start(ap,last) ap = ((char *)&(last)) + ((sizeof(last)+3)&~3)
|
||||
+#define __builtin_va_arg(ap,type) (ap += (sizeof(type)+3)&~3, *(type *)(ap - ((sizeof(type)+3)&~3)))
|
||||
+#define __builtin_va_copy(dest, src) (dest) = (src)
|
||||
+#define __builtin_va_end(ap)
|
||||
+#ifndef __TINYC_redefine_va_list
|
||||
+#define __TINYC_redefine_va_list
|
||||
+#undef __DEFINED_va_list
|
||||
+#endif
|
||||
+#endif
|
||||
+
|
||||
+#if __GNUC__ >= 3 || defined(__TINYC__)
|
||||
TYPEDEF __builtin_va_list va_list;
|
||||
TYPEDEF __builtin_va_list __isoc_va_list;
|
||||
#else
|
||||
--
|
||||
GitLab
|
||||
|
||||
|
|
@ -18,4 +18,10 @@ build flex-2.5.11
|
|||
# Part 23
|
||||
build flex-2.5.14
|
||||
|
||||
# Part 24
|
||||
build musl-1.1.24
|
||||
|
||||
# Part 25
|
||||
build tcc-0.9.27 tcc-musl.sh
|
||||
|
||||
echo "Bootstrapping completed."
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@ cd src/mes-libc
|
|||
|
||||
# Patch
|
||||
patch -Np0 -i ../../patches/mes-libc-qsort.patch
|
||||
patch -Np0 -i ../../patches/mes-libc-crt1.patch
|
||||
|
||||
# Recompile libc
|
||||
cd ../tcc-0.9.27
|
||||
|
|
|
|||
|
|
@ -0,0 +1,15 @@
|
|||
Ignore duplicate symbols. Due to poor support for weak symbols in tcc-ar
|
||||
we had to patch musl to replace weak symbols with strong symbols
|
||||
--- tccelf.c 2021-02-02 17:41:08.662247892 +0000
|
||||
+++ tccelf.c 2021-02-02 23:21:49.652080201 +0000
|
||||
@@ -552,8 +552,9 @@
|
||||
#if 0
|
||||
printf("new_bind=%x new_shndx=%x new_vis=%x old_bind=%x old_shndx=%x old_vis=%x\n",
|
||||
sym_bind, shndx, new_vis, esym_bind, esym->st_shndx, esym_vis);
|
||||
-#endif
|
||||
tcc_error_noabort("'%s' defined twice", name);
|
||||
+#endif
|
||||
+ goto do_patch;
|
||||
}
|
||||
} else {
|
||||
do_patch:
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
Fix issue in mes-libc crt where argc was getting truncated to lower byte and
|
||||
prevented programs with more than 255 arguments from working correctly.
|
||||
|
||||
--- lib/linux/x86-mes-gcc/crt1.c
|
||||
+++ lib/linux/x86-mes-gcc/crt1.c
|
||||
@@ -48,7 +48,7 @@ _start ()
|
||||
asm (
|
||||
"mov %%ebp,%%eax\n\t"
|
||||
"add $4,%%eax\n\t"
|
||||
- "movzbl (%%eax),%%eax\n\t"
|
||||
+ "mov (%%eax),%%eax\n\t"
|
||||
"add $3,%%eax\n\t"
|
||||
"shl $2,%%eax\n\t"
|
||||
"add %%ebp,%%eax\n\t"
|
||||
@@ -64,7 +64,7 @@ _start ()
|
||||
|
||||
"mov %ebp,%eax\n\t"
|
||||
"add $4,%eax\n\t"
|
||||
- "movzbl (%eax),%eax\n\t"
|
||||
+ "mov (%eax),%eax\n\t"
|
||||
"push %eax\n\t"
|
||||
|
||||
"call main\n\t"
|
||||
|
|
@ -0,0 +1,50 @@
|
|||
src_unpack() {
|
||||
# Our cp does not support recursive copying
|
||||
tar -c -C ../src/ -f tcc-0.9.27.tar tcc-0.9.27/
|
||||
tar -xf tcc-0.9.27.tar
|
||||
}
|
||||
|
||||
src_prepare() {
|
||||
patch -Np0 -i ../../patches/ignore-duplicate-symbols.patch
|
||||
}
|
||||
|
||||
src_compile() {
|
||||
export prefix=/after
|
||||
export libdir=${prefix}/lib/musl
|
||||
export incdir=${prefix}/include/musl
|
||||
export bindir=${prefix}/bin
|
||||
|
||||
mkdir -p ${libdir}/tcc
|
||||
|
||||
# We first have to recompile using tcc-0.9.26 as tcc-0.9.27 is not self-hosting,
|
||||
# but when linked with musl it is.
|
||||
for TCC in tcc-0.9.26 tcc-musl; do
|
||||
${TCC} \
|
||||
-v \
|
||||
-static \
|
||||
-o ${bindir}/tcc-musl \
|
||||
-D TCC_TARGET_I386=1 \
|
||||
-D CONFIG_TCCDIR=\"${libdir}/tcc\" \
|
||||
-D CONFIG_TCC_CRTPREFIX=\"${libdir}\" \
|
||||
-D CONFIG_TCC_ELFINTERP=\"/musl/loader\" \
|
||||
-D CONFIG_TCC_LIBPATHS=\"${libdir}:${libdir}/tcc\" \
|
||||
-D CONFIG_TCC_SYSINCLUDEPATHS=\"${incdir}\" \
|
||||
-D TCC_LIBGCC=\"${libdir}/libc.a\" \
|
||||
-D CONFIG_TCC_STATIC=1 \
|
||||
-D CONFIG_USE_LIBGCC=1 \
|
||||
-D TCC_VERSION=\"0.9.27\" \
|
||||
-D ONE_SOURCE=1 \
|
||||
tcc.c
|
||||
|
||||
# libtcc1.a
|
||||
${TCC} -c -D HAVE_CONFIG_H=1 lib/libtcc1.c
|
||||
${TCC} -ar cr ${libdir}/tcc/libtcc1.a libtcc1.o
|
||||
done
|
||||
}
|
||||
|
||||
src_install() {
|
||||
# Remove old tcc binaries, keep one for tcc-0.9.27 with mes C library
|
||||
mv ${bindir}/tcc ${bindir}/tcc-mes
|
||||
rm ${bindir}/boot*-tcc ${bindir}/tcc-0.9.26 ${bindir}/mes-tcc
|
||||
ln -s ${bindir}/tcc-musl ${bindir}/tcc
|
||||
}
|
||||
Loading…
Reference in New Issue