Setup to remove pregenerated header files from musl 1.1

Author: fosslinux

parts.rst

@@ -399,6 +399,9 @@ from building many newer or more complex programs.
 ``tcc`` has slight problems when building and linking ``musl``, so we
 apply a few patches.
 
+We also get rid of a few functions from ``musl``, as they rely on pregenerated
+files we are unable to generate at this stage.
+
 We do not use any of ``/usr/lib/mes`` or ``/usr/include/mes`` any longer, rather
 using ``/usr/lib`` and ``/usr/include`` like normal.
 
@@ -422,6 +425,19 @@ tcc 0.9.27 (musl v2)
 Now that we have a ‘fixed’ ``musl``, we now recompile ``tcc`` as ``tcc``
 uses floats extensively.
 
+grep 2.4
+========
+
+GNU ``grep`` is a pattern matching utility. ``grep`` is needed to rebuild some
+generated header files in ``musl``.
+
+musl 1.1.24 (v3)
+================
+
+We are now able to regenerate those header files that we couldn't regenerate
+earlier. We unlock the full range of ``musl`` support, required for a
+number of applications (e.g. ``flex``) before the next ``musl`` rebuild.
+
 sed 4.0.9
 =========
 
@@ -485,12 +501,6 @@ a 3 stage process:
 
 Finally we have a fully functional ``bison`` executable.
 
-grep 2.4
-========
-
-GNU ``grep`` is a pattern matching utility. Is is not immediately needed
-but will be useful later for autotools.
-
 diffutils 2.7
 =============
 
@@ -692,10 +702,10 @@ In particular we can now use full featured ``ar`` instead of ``tcc -ar``,
 the GNU linker ``ld``, which allows us building shared libraries,
 and the GNU assembler ``as``.
 
-musl 1.1.24 (v3)
+musl 1.1.24 (v4)
 ================
 
-We rebuild musl for the third time. This time we can use GNU as to build assembly source files,
+We rebuild musl for the fourth time. This time we can use GNU as to build assembly source files,
 so those assembly files that tcc failed to compile no longer have to be patched.
 
 tcc 0.9.27 (musl v3)

steps/SHA256SUMS.pkgs

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@@ -64,7 +64,7 @@ c1989fc2855dbb0350c4e5b677028306614a9f4b5cb6c01fd459c5e1abf592b9  grep-2.4_0.tar
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steps/manifest

@@ -64,6 +64,8 @@ build: musl-1.1.24
 build: tcc-0.9.27
 build: musl-1.1.24
 build: tcc-0.9.27
+build: grep-2.4
+build: musl-1.1.24
 build: sed-4.0.9
 build: bzip2-1.0.8
 build: m4-1.4.7
@@ -74,7 +76,6 @@ uninstall: heirloom-devtools-070527
 build: bison-3.4.1
 build: bison-3.4.1
 build: bison-3.4.1
-build: grep-2.4
 build: diffutils-2.7
 build: coreutils-5.0
 build: coreutils-6.10

steps/musl-1.1.24/files/disable_ctype_headers.patch

@@ -0,0 +1,53 @@
+SPDX-FileCopyrightText: 2024 fosslinux <[email protected]>
+
+SPDX-License-Identifier: MIT
+
+diff --color -ru include/wchar.h include/wchar.h
+--- musl-chartable-tools-44d780e03e78efcb3168ceab068170206dc92e85/include/wchar.h	2024-12-21 11:29:46.207537390 +1100
++++ musl-chartable-tools-44d780e03e78efcb3168ceab068170206dc92e85/include/wchar.h	2024-12-21 12:03:00.494377416 +1100
+@@ -175,10 +175,7 @@
+ #if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+ int wcwidth (wchar_t);
+ int wcswidth (const wchar_t *, size_t);
+-int       iswalnum(wint_t);
+-int       iswalpha(wint_t);
+ int       iswblank(wint_t);
+-int       iswcntrl(wint_t);
+ int       iswdigit(wint_t);
+ int       iswgraph(wint_t);
+ int       iswlower(wint_t);
+@@ -187,9 +184,6 @@
+ int       iswspace(wint_t);
+ int       iswupper(wint_t);
+ int       iswxdigit(wint_t);
+-int       iswctype(wint_t, wctype_t);
+-wint_t    towlower(wint_t);
+-wint_t    towupper(wint_t);
+ wctype_t  wctype(const char *);
+ 
+ #ifndef __cplusplus
+diff --color -ru include/wctype.h include/wctype.h
+--- musl-chartable-tools-44d780e03e78efcb3168ceab068170206dc92e85/include/wctype.h	2024-12-21 11:29:46.207537390 +1100
++++ musl-chartable-tools-44d780e03e78efcb3168ceab068170206dc92e85/include/wctype.h	2024-12-21 12:07:48.030354351 +1100
+@@ -24,10 +24,7 @@
+ 
+ #undef iswdigit
+ 
+-int       iswalnum(wint_t);
+-int       iswalpha(wint_t);
+ int       iswblank(wint_t);
+-int       iswcntrl(wint_t);
+ int       iswdigit(wint_t);
+ int       iswgraph(wint_t);
+ int       iswlower(wint_t);
+@@ -36,10 +33,6 @@
+ int       iswspace(wint_t);
+ int       iswupper(wint_t);
+ int       iswxdigit(wint_t);
+-int       iswctype(wint_t, wctype_t);
+-wint_t    towctrans(wint_t, wctrans_t);
+-wint_t    towlower(wint_t);
+-wint_t    towupper(wint_t);
+ wctrans_t wctrans(const char *);
+ wctype_t  wctype(const char *);
+ 

steps/musl-1.1.24/pass1.sh

@@ -5,6 +5,13 @@
 src_prepare() {
     default
 
+    # meslibc is insufficient to regenerate src/ctype or src/iconv
+    # disable everything using a generated header
+    patch -Np1 -i ../../files/disable_ctype_headers.patch
+    rm src/ctype/iswalpha.c src/ctype/iswalnum.c src/ctype/iswctype.c \
+        src/ctype/towctrans.c
+    rm include/iconv.h src/locale/iconv.c src/locale/iconv_close.c
+
     # tcc does not support complex types
     rm -rf src/complex
 

steps/musl-1.1.24/pass3.sh

@@ -7,6 +7,9 @@ src_prepare() {
 
     # tcc does not support complex types
     rm -rf src/complex
+
+    # Configure fails without this
+    mkdir -p /dev
 }
 
 src_configure() {
@@ -15,7 +18,7 @@ src_configure() {
       --disable-shared \
       --prefix="${PREFIX}" \
       --libdir="${LIBDIR}" \
-      --includedir="${PREFIX}/include"
+      --includedir="${PREFIX}/include/"
 
     # configure script creates this file
     if test -f /dev/null; then
@@ -24,9 +27,5 @@ src_configure() {
 }
 
 src_compile() {
-    make "${MAKEJOBS}" PREFIX="${PREFIX}" CROSS_COMPILE= CFLAGS="-DSYSCALL_NO_TLS" AS_CMD='as -o $@ $<'
-}
-
-src_install() {
-    make PREFIX="${PREFIX}" DESTDIR="${DESTDIR}" install
+    make "${MAKEJOBS}" CROSS_COMPILE= AR="tcc -ar" RANLIB=true CFLAGS="-DSYSCALL_NO_TLS"
 }

steps/musl-1.1.24/pass4.sh

@@ -0,0 +1,32 @@
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <[email protected]>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+src_prepare() {
+    default
+
+    # tcc does not support complex types
+    rm -rf src/complex
+}
+
+src_configure() {
+    CC=tcc ./configure \
+      --host=i386 \
+      --disable-shared \
+      --prefix="${PREFIX}" \
+      --libdir="${LIBDIR}" \
+      --includedir="${PREFIX}/include"
+
+    # configure script creates this file
+    if test -f /dev/null; then
+        rm /dev/null
+    fi
+}
+
+src_compile() {
+    make "${MAKEJOBS}" PREFIX="${PREFIX}" CROSS_COMPILE= CFLAGS="-DSYSCALL_NO_TLS" AS_CMD='as -o $@ $<'
+}
+
+src_install() {
+    make PREFIX="${PREFIX}" DESTDIR="${DESTDIR}" install
+}