Move 'config.mak' customization to the correct place.HEADmaster

1 files changed, 72 insertions, 41 deletions

diff --git a/bootstrap b/bootstrap
index 20d095e..b3114ce 100755
--- a/bootstrap
+++ b/bootstrap
@@ -5,7 +5,7 @@
 # Purpose  : Bootstraps Adélie from source for any architecture.
 # Authors  : Zach van Rijn <me@zv.io>
 # License  : MIT
-# Revision : 20240111
+# Revision : 20240114
 #===============================================================
 
 #===============================================================
@@ -329,31 +329,15 @@ EOF
 case "${1}" in
 #   adelie        gcc                 qemu
 #   ------        ---                 ----
-    aarch64)    m=aarch64:      ;   q=aarch64   ;
-                g="--with-arch=armv8-a --with-abi=lp64 --enable-fix-cortex-a53-835769 --enable-fix-cortex-a53-843419";
-                ;;
-    armv7)      m=armv7l:eabihf ;   q=arm       ;
-                g="--with-arch=armv7-a --with-tune=generic-armv7-a --with-fpu=vfpv3-d16 --with-float=hard --with-abi=aapcs-linux --with-mode=thumb";
-                ;;
-    ppc)        m=powerpc:      ;   q=ppc       ;
-                g="--enable-secureplt --enable-decimal-float=no";
-                ;;
-    ppc64)      m=powerpc64:    ;   q=ppc64     ;
-                g="--with-abi=elfv2 --enable-secureplt --enable-decimal-float=no";
-                ;;
-    x86_64)     m=x86_64:       ;   q=x86_64    ;
-                g=""; # (none needed)
-                ;;
-    pmmx)       m=i586:         ;   q=i386      ;
-                g="--with-arch=i586 --with-tune=pentium2 --enable-cld --enable-mmx";
-                ;;
-
-    riscv64)    m=riscv64:      ;   q=riscv64   ;
-                g="--with-arch=rv64gc --with-abi=lp64d --enable-autolink-libatomic";
-                ;;
-    s390x)      m=s390x:        ;   q=s390x     ;
-                g="--with-arch=z196 --with-tune=zEC12 --with-zarch --with-long-double-128 --enable-decimal-float";
-                ;;
+    aarch64)    m=aarch64:      ;   q=aarch64   ; ;;
+    armv7)      m=armv7l:eabihf ;   q=arm       ; ;;
+    ppc)        m=powerpc:      ;   q=ppc       ; ;;
+    ppc64)      m=powerpc64:    ;   q=ppc64     ; ;;
+    x86_64)     m=x86_64:       ;   q=x86_64    ; ;;
+    pmmx)       m=i586:         ;   q=i386      ; ;;
+
+    riscv64)    m=riscv64:      ;   q=riscv64   ; ;;
+    s390x)      m=s390x:        ;   q=s390x     ; ;;
 
     *) usage ;;
 esac
@@ -411,14 +395,11 @@ mkdir -p "${BASE}";
 # mcmtools (seed)
 
 ##
-# Allow the user to supply an existing mcmtools installation. It
-# is not ideal but we can allow the user to save some CPU cycles
-# at the cost of adding new tools to the existing installation.
+# This uses upstream default configuration to build a reasonably
+# sane mcmtools environment, plus static QEMU user emulators.
 #
-# If they wish to keep the existing mcmtools installation clean,
-# the 'binsub' tool can be used to relocate it. A temporary dir
-# is used if this environment variable is omitted. Another case
-# for providing a custom value is if '/tmp' is mounted weird.
+# The default configuration is copied elsewhere and updated with
+# Adélie-specific configuration. This is used in a later step.
 #
 if ! test -d "${MTOOLS}"/sys/emus/bin; then # FIXME: no hard code
     cd "${BASE}";
@@ -426,31 +407,79 @@ if ! test -d "${MTOOLS}"/sys/emus/bin; then # FIXME: no hard code
     test -d bootstrap                                          \
         || git clone ${CHAINS}/bootstrap.git;
     cd bootstrap;
-    git checkout f7a470d4a6a56991af44d64419d59d6b58130429;
+    git checkout 3f1007074c2f81bfe0bead7f6f0a19640060d708;
 
     ## seed rootfs
     #
     # This will build absolutely everything that is needed to be
     # self-reliant, except for some build deps for QEMU.
     #
-    # We copy 'config.mak' from mcmtools bootstrap to the rootfs
-    # so that when we build "real" toolchain they are the same,
-    # except for target-specific GCC configure options above.
+    # The 'config.mak' file providing sane defaults is generated
+    # by the 'bootstrap' script below, however, if one already
+    # exists then it will be used instead.
     #
     DEST="${MTOOLS}"                                           \
     ARCH=${BUILDS}                                             \
         ./bootstrap                                            \
         ;
+
+    ## config.mak
+    #
+    # We copy 'config.mak' from mcmtools bootstrap to the rootfs
+    # so that we can safely modify it and then use it later.
+    #
+    # Note: mcmtools has already been built and is not using the
+    # custom configuration. The musl-cross-make toolchains built
+    # in a later step will use the custom configuration.
+    #
     test -f "${MTOOLS}"/config.mak ||                          \
         cp "${MTOOLS}"/tmp/musl-cross-make/config.mak          \
         "${MTOOLS}"/config.mak                                 \
         ;
-    sent=HAVE_GCC_CONFIG; # sentinel
+
+    sent=HAVE_ADELIE_CONFIG; # sentinel
     grep ${sent} "${MTOOLS}"/config.mak >/dev/null ||          \
-        cat >> "${MTOOLS}"/config.mak <<EOF
-GCC_CONFIG += ${g}
-# ${sent}
+        cat >> "${MTOOLS}"/config.mak <<"EOF"
+# __SENTINEL__
+
+# supported targets
+ifneq ($(findstring aarch64-,$(TARGET)),)
+GCC_CONFIG_FOR_TARGET += --with-arch=armv8-a --with-abi=lp64 --enable-fix-cortex-a53-835769 --enable-fix-cortex-a53-843419
+endif
+
+ifneq ($(findstring armv7l-,$(TARGET)),)
+GCC_CONFIG_FOR_TARGET += --with-arch=armv7-a --with-tune=generic-armv7-a --with-fpu=vfpv3-d16 --with-float=hard --with-abi=aapcs-linux --with-mode=thumb
+endif
+
+ifneq ($(findstring powerpc64-,$(TARGET)),)
+GCC_CONFIG_FOR_TARGET += --enable-secureplt --enable-decimal-float=no --with-abi=elfv2
+endif
+
+ifneq ($(findstring powerpc-,$(TARGET)),)
+GCC_CONFIG_FOR_TARGET += --enable-secureplt --enable-decimal-float=no
+endif
+
+ifneq ($(findstring x86_64-,$(TARGET)),)
+GCC_CONFIG_FOR_TARGET +=
+endif
+
+ifneq ($(findstring i586-,$(TARGET)),)
+GCC_CONFIG_FOR_TARGET += --with-arch=i586 --with-tune=pentium2 --enable-cld --enable-mmx
+endif
+
+# experimental targets
+ifneq ($(findstring riscv64-,$(TARGET)),)
+GCC_CONFIG_FOR_TARGET += --with-arch=rv64gc --with-abi=lp64d --enable-autolink-libatomic
+endif
+
+ifneq ($(findstring s390x-,$(TARGET)),)
+GCC_CONFIG_FOR_TARGET += --with-arch=z196 --with-tune=zEC12 --with-zarch --with-long-double-128 --enable-decimal-float
+endif
 EOF
+    sed -i "${MTOOLS}"/config.mak                              \
+        -e "s/__SENTINEL__/${sent}/g"                          \
+        ;
+
     # cleaning
     (
         cd "${MTOOLS}";
@@ -503,6 +532,8 @@ fi
 #
 # Build both. We will eventually need both toolchains, anyway.
 #
+# Note: these toolchains will use the updated 'config.mak' file.
+#
 if ! test -d "${MTOOLS}"/sys/tc/native; then # FIXME: no hard code
     cd "${BASE}";