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authorJo-Philipp Wich <jow@openwrt.org>2012-01-18 03:11:45 +0000
committerJo-Philipp Wich <jow@openwrt.org>2012-01-18 03:11:45 +0000
commitc9fe1a096b829afab22cdd8a248239b3597890ee (patch)
tree83034663be2f839fd5dac91c3904331de00c4b54 /scripts
parentac2f1b4f014f36e7490df7a5b31aa1fb4bd377ee (diff)
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[scripts] add patch-specs.sh, a utility for modifying GCC specs
The patch-specs.sh utility dumps the GCC specs of a given toolchain and modifies them to always include $STAGING_DIR in the link and compiler command lines, this makes most -I and -L flags unnecessary and lets the compiler automatically find libraries and headers in the staging dir, also solves the majority of -rpath issues. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29767 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/patch-specs.sh64
1 files changed, 64 insertions, 0 deletions
diff --git a/scripts/patch-specs.sh b/scripts/patch-specs.sh
new file mode 100755
index 0000000000..4d02a009ec
--- /dev/null
+++ b/scripts/patch-specs.sh
@@ -0,0 +1,64 @@
+#!/usr/bin/env bash
+
+DIR="$1"
+FOUND=0
+
+if [ -d "$DIR" ]; then
+ DIR="$(cd "$DIR"; pwd)"
+else
+ echo "Usage: $0 toolchain-dir"
+ exit 1
+fi
+
+echo -n "Locating cpp ... "
+for bin in bin usr/bin usr/local/bin; do
+ for cmd in "$DIR/$bin/"*-cpp; do
+ if [ -x "$cmd" ]; then
+ echo "$cmd"
+ CPP="$cmd"
+ break
+ fi
+ done
+done
+
+if [ ! -x "$CPP" ]; then
+ echo "Can't locate a cpp executable in '$DIR' !"
+ exit 1
+fi
+
+for lib in $(STAGING_DIR="$dir" "$CPP" -x c -v /dev/null 2>&1 | sed -ne 's#:# #g; s#^LIBRARY_PATH=##p'); do
+ if [ -d "$lib" ]; then
+ grep -qs "STAGING_DIR" "$lib/specs" && rm -f "$lib/specs"
+ if [ $FOUND -lt 1 ]; then
+ echo -n "Patching specs ... "
+ STAGING_DIR="$dir" "$CPP" -dumpspecs | awk '
+ mode ~ "link" {
+ sub("%{L.}", "%{L*} -L %:getenv(STAGING_DIR /usr/lib) -rpath-link %:getenv(STAGING_DIR /usr/lib)")
+ }
+ mode ~ "cpp" {
+ $0 = $0 " -idirafter %:getenv(STAGING_DIR /usr/include)"
+ }
+ {
+ print $0
+ mode = ""
+ }
+ /^\*cpp:/ {
+ mode = "cpp"
+ }
+ /^\*link.*:/ {
+ mode = "link"
+ }
+ ' > "$lib/specs"
+ echo "ok"
+ FOUND=1
+ fi
+ fi
+done
+
+if [ $FOUND -lt 1 ]; then
+ echo "Failed to locate library directory!"
+ exit 1
+else
+ echo "Toolchain successfully patched."
+ exit 0
+fi