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authorManuel Novoa III <mjn3@codepoet.org>2001-05-31 21:23:20 +0000
committerManuel Novoa III <mjn3@codepoet.org>2001-05-31 21:23:20 +0000
commitdd4d42c2b998b2b95912ac04106fb7a9b1b0a57e (patch)
tree19bdbd5e7c1fc93edcd14b115fdbdf3be205389d /extra/gcc-uClibc/gcc-uClibc.c
parentf43cd38254b0f915fcade2f61218430ebb5e3db3 (diff)
Removed INSTALL_DIR and replaced it with DEVEL_PREFIX, ROOT_DIR, and
TARGET_PREFIX to allow more flexibility. Also modified the gcc wrapper to do the right thing if -Wl,--dynamic-linker,xxx is passed on the command line. The gcc wrapper will also check the env variable UCLIBC_GCC_LDOPT for a dynamic linker option at runtime (although command line arg overrides the env variable).
Diffstat (limited to 'extra/gcc-uClibc/gcc-uClibc.c')
-rw-r--r--extra/gcc-uClibc/gcc-uClibc.c82
1 files changed, 47 insertions, 35 deletions
diff --git a/extra/gcc-uClibc/gcc-uClibc.c b/extra/gcc-uClibc/gcc-uClibc.c
index 9c6cec3eb..2cbf7f3d4 100644
--- a/extra/gcc-uClibc/gcc-uClibc.c
+++ b/extra/gcc-uClibc/gcc-uClibc.c
@@ -36,6 +36,29 @@
*
* The wrapper now displays the command line passed to gcc when '-v' is used.
*
+ * May 31, 2001
+ *
+ * "rpath" and "build" behavior are now decoupled. You can of course get
+ * the old "build" behavior by setting UCLIBC_GCC="rpath-build". Order
+ * isn't important here, as only the substrings are searched for.
+ *
+ * Added environment variable check for UCLIBC_GCC_DLOPT to let user specify
+ * an alternative dynamic linker at runtime without using command line args.
+ * Since this wouldn't commonly be used, I made it easy on myself. You have
+ * to match the option you would have passed to the gcc wrapper. As an
+ * example,
+ *
+ * export UCLIBC_GCC_DLOPT="-Wl,--dynamic-linker,/lib/ld-alt-linker.so.3"
+ *
+ * This is really only useful if target arch == devel arch and DEVEL_PREFIX
+ * isn't empty. It involves a recompile, but you can at least test apps
+ * on your devel system if combined with the "rpath" behavor if by using
+ * LD_LIBRARY_PATH, etc.
+ *
+ * Also added check for "-Wl,--dynamic-linker" on the command line. The
+ * use default dynamic linker or the envirnment-specified dynamic linker
+ * is disabled in that case.
+ *
*/
/*
@@ -51,34 +74,32 @@
#include "gcc-uClibc.h"
-#if 0
static char *rpath_link[] = {
- "-Wl,-rpath-link,"UCLIBC_INSTALL_DIR"lib",
- "-Wl,-rpath-link,"UCLIBC_BUILD_DIR"lib"
+ "-Wl,-rpath-link,"UCLIBC_DEVEL_PREFIX UCLIBC_ROOT_DIR"/lib",
+ "-Wl,-rpath-link,"UCLIBC_BUILD_DIR"/lib"
};
static char *rpath[] = {
- "-Wl,-rpath,"UCLIBC_INSTALL_DIR"lib",
- "-Wl,-rpath,"UCLIBC_BUILD_DIR"lib"
+ "-Wl,-rpath,"UCLIBC_DEVEL_PREFIX UCLIBC_ROOT_DIR"/lib",
+ "-Wl,-rpath,"UCLIBC_BUILD_DIR"/lib"
};
-#endif
static char *uClibc_inc[] = {
- "-I"UCLIBC_INSTALL_DIR"usr/include/",
- "-I"UCLIBC_BUILD_DIR"include/"
+ "-I"UCLIBC_DEVEL_PREFIX UCLIBC_ROOT_DIR"/usr/include/",
+ "-I"UCLIBC_BUILD_DIR"/include/"
};
static char *crt0_path[] = {
- UCLIBC_INSTALL_DIR"lib/crt0.o",
- UCLIBC_BUILD_DIR"lib/crt0.o"
+ UCLIBC_DEVEL_PREFIX UCLIBC_ROOT_DIR"/usr/lib/crt0.o",
+ UCLIBC_BUILD_DIR"/lib/crt0.o"
};
static char *lib_path[] = {
- "-L"UCLIBC_INSTALL_DIR"lib",
- "-L"UCLIBC_BUILD_DIR"lib"
+ "-L"UCLIBC_DEVEL_PREFIX UCLIBC_ROOT_DIR"/lib",
+ "-L"UCLIBC_BUILD_DIR"/lib"
};
-static char *usr_lib_path = "-L"UCLIBC_INSTALL_DIR"usr/lib";
+static char *usr_lib_path = "-L"UCLIBC_DEVEL_PREFIX UCLIBC_ROOT_DIR"/usr/lib";
static char static_linking[] = "-static";
static char nostdinc[] = "-nostdinc";
@@ -93,8 +114,14 @@ int main(int argc, char **argv)
int source_count = 0, use_rpath = 0, verbose = 0;
int i, j;
char ** gcc_argv;
+ char *dlstr;
char *ep;
+ dlstr = getenv("UCLIBC_GCC_DLOPT");
+ if (!dlstr) {
+ dlstr = "-Wl,--dynamic-linker," DYNAMIC_LINKER;
+ }
+
ep = getenv("UCLIBC_GCC");
if (!ep) {
ep = "";
@@ -102,7 +129,8 @@ int main(int argc, char **argv)
if ((strstr(argv[0],"build") != 0) || (strstr(ep,"build") != 0)) {
use_build_dir = 1;
- }
+
+}
if ((strstr(argv[0],"rpath") != 0) || (strstr(ep,"rpath") != 0)) {
use_rpath = 1;
@@ -144,6 +172,9 @@ int main(int argc, char **argv)
if (strstr(argv[i],static_linking) != 0) {
use_static_linking = 1;
}
+ if (strstr(argv[i],"--dynamic-linker") != 0) {
+ dlstr = 0;
+ }
}
break;
case '-':
@@ -177,33 +208,14 @@ int main(int argc, char **argv)
}
if (linking && source_count) {
if (!use_static_linking) {
- if (DYNAMIC_LINKER[0]) { /* not empty string */
-#if 1
- gcc_argv[i++] = "-Wl,--dynamic-linker,"DYNAMIC_LINKER;
- if (strstr(DYNAMIC_LINKER,"uclibc") != 0) { /* custom linker */
- use_rpath = 0; /* so -rpath not needed for normal case */
- }
-#else
- char *dlstr = "-Wl,--dynamic-linker,"DYNAMIC_LINKER;
- if (strstr(DYNAMIC_LINKER,"uclibc") != 0) { /* custom linker */
- use_rpath = 0; /* so -rpath not needed for normal case */
- if (use_build_dir) {
- dlstr = "-Wl,--dynamic-linker," \
- UCLIBC_BUILD_DIR DYNAMIC_LINKER;
- }
- }
+ if (dlstr) {
gcc_argv[i++] = dlstr;
-#endif
}
-#if 0
- if (use_build_dir || use_rpath) {
+ if (use_rpath) {
gcc_argv[i++] = rpath[use_build_dir];
}
-#endif
}
-#if 0
gcc_argv[i++] = rpath_link[use_build_dir]; /* just to be safe */
-#endif
gcc_argv[i++] = lib_path[use_build_dir];
if (!use_build_dir) {
gcc_argv[i++] = usr_lib_path;